Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Dec. 31, 2016	Feb. 23, 2017	Jun. 30, 2016
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	FY
Trading Symbol	BRO
Entity Registrant Name	BROWN & BROWN INC
Entity Central Index Key	0000079282
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		139,986,178
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 4,352,838,341

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
REVENUES
Commissions and fees	$ 1,762,787	$ 1,656,951	$ 1,567,460
Investment income	1,456	1,004	747
Other income, net	2,386	2,554	7,589
Total revenues	1,766,629	1,660,509	1,575,796
EXPENSES
Employee compensation and benefits	925,217	856,952	811,112
Non-cash stock-based compensation	16,052	15,513	19,363
Other operating expenses	262,872	251,055	235,328
(Gain)/loss on disposal	(1,291)	(619)	47,425
Amortization	86,663	87,421	82,941
Depreciation	21,003	20,890	20,895
Interest	39,481	39,248	28,408
Change in estimated acquisition earn-out payables	9,185	3,003	9,938
Total expenses	1,343,130	1,257,950	1,236,047
Income before income taxes	423,499	402,559	339,749
Income taxes	166,008	159,241	132,853
Net income	$ 257,491	$ 243,318	$ 206,896
Net income per share:
Basic (in dollars per share)	$ 1.84	$ 1.72	$ 1.43
Diluted (in dollars per share)	1.82	1.70	1.41
Dividends declared per share (in dollars per share)	$ 0.5025	$ 0.4525	$ 0.41

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 515,646	$ 443,420
Restricted cash and investments	265,637	229,753
Short-term investments	15,048	13,734
Premiums, commissions and fees receivable	502,482	433,885
Reinsurance recoverable	78,083	31,968
Prepaid reinsurance premiums	308,661	309,643
Deferred income taxes	24,609	24,635
Other current assets	50,571	50,351
Total current assets	1,760,737	1,537,389
Fixed assets, net	75,807	81,753
Goodwill	2,675,402	2,586,683
Amortizable intangible assets, net	707,454	744,680
Investments	23,048	18,092
Other assets	44,895	35,882
Total assets	5,287,343	5,004,479
Current Liabilities:
Premiums payable to insurance companies	647,564	574,736
Losses and loss adjustment reserve	78,083	31,968
Unearned premiums	308,661	309,643
Premium deposits and credits due customers	83,765	83,098
Accounts payable	69,595	63,910
Accrued expenses and other liabilities	201,989	192,067
Current portion of long-term debt	55,500	73,125
Total current liabilities	1,445,157	1,328,547
Long-term debt	1,018,372	1,071,618
Deferred income taxes, net	382,295	360,949
Other liabilities	81,308	93,589
Shareholders’ Equity:
Common stock, par value $0.10 per share; authorized 280,000 shares; issued 148,107 shares and outstanding 140,104 shares at 2016, issued 146,415 shares and outstanding 138,985 shares at 2015	14,811	14,642
Additional paid-in capital	468,443	426,498
Treasury stock, at cost 8,003 and 7,430 shares at 2016 and 2015, respectively	(257,683)	(238,775)
Retained earnings	2,134,640	1,947,411
Total shareholders’ equity	2,360,211	2,149,776
Total liabilities and shareholders’ equity	$ 5,287,343	$ 5,004,479

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Short-term Investments	$ 15,048	$ 13,734
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	280,000,000	280,000,000
Common stock, shares issued (in shares)	145,107,000	146,415,000
Common Stock, Shares, Outstanding	140,104,000	138,985,000
Treasury stock shares (in shares)	8,003,000	7,430,000
Tax effect of accumulated other comprehensive income	$ 0	$ 0

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net income	$ 257,491	$ 243,318	$ 206,896
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization	86,663	87,421	82,941
Depreciation	21,003	20,890	20,895
Share-based Compensation	16,052	15,513	19,363
Change in estimated acquisition earn-out payables	9,185	3,003	9,938
Deferred income taxes	18,163	22,696	7,369
Amortization of debt discount	165	157	46
Deferred Finance Costs, Own-share Lending Arrangement, Issuance Costs, Amortization Expense	1,597	0	0
Accretion (Amortization) of Discounts and Premiums, Investments	39	0	0
Income tax benefit from exercise of shares from the stock benefit plans	(7,346)	(3,276)	(3,298)
Payments On Acquisition Earn Outs In Excess Of Original Estimated Payables	(3,904)	(11,383)	(2,539)
Loss/(gain) on sales of investments, fixed assets and customer accounts	596	(107)	42,465
Changes in operating assets and liabilities, net of effect from acquisitions and divestitures:
Restricted cash and investments (increase) decrease	(35,884)	30,016	(9,760)
Premiums, commissions and fees receivable (increase)	(63,550)	(7,163)	(11,160)
Reinsurance recoverables (increase) decrease	(46,115)	(18,940)	12,210
Prepaid reinsurance premiums decrease (increase)	982	10,943	(31,573)
Other assets (increase)	(4,718)	(5,318)	(12,564)
Premiums payable to insurance companies decrease	66,084	542	8,164
Premium deposits and credits due customers increase (decrease)	527	(2,973)	2,323
Losses and loss adjustment reserve increase (decrease)	46,115	18,940	(12,210)
Unearned premiums (decrease) increase	(982)	(10,943)	31,573
Accounts payable increase	30,174	34,206	36,949
Accrued expenses and other liabilities increase	8,670	8,204	11,718
Other liabilities (decrease)	(25,849)	(23,898)	(24,727)
Net cash provided by operating activities	375,158	411,848	385,019
Cash flows from investing activities:
Additions to fixed assets	(17,765)	(18,375)	(24,923)
Payments for businesses acquired, net of cash acquired	(122,622)	(136,000)	(696,486)
Proceeds from sales of fixed assets and customer accounts	4,957	10,576	13,631
Purchases of investments	(25,872)	(22,766)	(17,813)
Proceeds from Sale, Maturity and Collection of Investments	18,890	21,928	18,278
Net cash used in investing activities	(142,412)	(144,637)	(707,313)
Cash flows from financing activities:
Payments on acquisition earn-outs	(24,309)	(25,415)	(9,530)
Proceeds from Issuance of Long-term Debt	0	0	1,048,425
Payments on long-term debt	(73,125)	(45,625)	(330,000)
Income tax benefit from exercise of shares from the stock benefit plans	7,346	3,276	3,298
Issuances of common stock for employee stock benefit plans	15,983	15,890	14,808
Repurchase of stock benefit plan shares for employees to fund tax withholdings	(8,495)	(2,857)	(3,252)
Purchase of treasury stock	(18,908)	(163,750)	(75,025)
Settlement (prepayment) of accelerated share repurchase program	11,250	(11,250)	0
Cash dividends paid	(70,262)	(64,108)	(59,334)
Net cash (used in) provided by financing activities	(160,520)	(293,839)	589,390
Net increase (decrease) in cash and cash equivalents	72,226	(26,628)	267,096
Cash and cash equivalents at beginning of period	443,420	470,048
Cash and cash equivalents at end of period	515,646	443,420	470,048
Proceeds from Lines of Credit	0	0	475,000
Repayments of Lines of Credit	$ 0	$ 0	$ (475,000)

Shareholders Equity Statement - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]
Common Stock, Shares, Outstanding		145,419
Stockholders' Equity Attributable to Parent at Dec. 31, 2013	$ 2,007,141	$ 14,542	$ 371,960	$ 0	$ 1,620,639
Common Stock Issued to Directors	320,000	1,000	319,000
Dividends, Cash	$ (59,334)				(59,334)
Net Income (Loss) Attributable to Parent	206,896				206,896
Stock Issued During Period, Value, Employee Benefit Plan		442
Stock Issued During Period, Value, Employee Benefit Plan	30,449	$ 44	$ 30,405
Treasury Stock, Value, Acquired, Cost Method	(75,025)			(75,025)
Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net	3,298		3,298
Common Stock Issued to Directors Shares		10
Stockholders' Equity Attributable to Parent at Dec. 31, 2014	$ 2,113,745	$ 14,587	$ 405,982	(75,025)	1,768,201
Common Stock, Shares, Outstanding		145,871
Common Stock Issued to Directors	500,000	2,000	498,000
Dividends, Cash	$ (64,108)				(64,108)
Net Income (Loss) Attributable to Parent	243,318				243,318
Stock Issued During Period, Value, Employee Benefit Plan		528
Stock Issued During Period, Value, Employee Benefit Plan	28,045	$ 53	$ 27,992
Treasury Stock, Value, Acquired, Cost Method	(175,000)		(11,250)	(163,750)
Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net	3,276		3,276
Common Stock Issued to Directors Shares		16
Stockholders' Equity Attributable to Parent at Dec. 31, 2015	$ 2,149,776	$ 14,642	$ 426,498	(238,775)	1,947,411
Common Stock, Shares, Outstanding	138,985,000	146,415
Common Stock Issued to Directors	500,000	2,000	498,000
Dividends, Cash	$ (70,262)				(70,262)
Net Income (Loss) Attributable to Parent	257,491				257,491
Stock Issued During Period, Value, Employee Benefit Plan		1,675
Stock Issued During Period, Value, Employee Benefit Plan	23,018	$ 167	$ 22,851
Treasury Stock, Value, Acquired, Cost Method	(7,658)		11,250	(18,908)
Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net	7,346		7,346
Common Stock Issued to Directors Shares		17
Stockholders' Equity Attributable to Parent at Dec. 31, 2016	$ 2,360,211	$ 14,811	$ 468,443	$ (257,683)	$ 2,134,640
Common Stock, Shares, Outstanding	140,104,000	148,107

Net Income Per Share

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Net Income Per Share

Basic EPS is computed based upon the weighted-average number of common shares (including participating securities) issued and outstanding during the period. Diluted EPS is computed based upon the weighted-average number of common shares issued and outstanding plus equivalent shares, assuming the exercise of stock options. The dilutive effect of stock options is computed by application of the treasury-stock method. The following is a reconciliation between basic and diluted weighted-average shares outstanding for the years ended December 31:



(in thousands, except per share data)	2016			2015			2014
Net income	$	257,491		$	243,318		$	206,896
Net income attributable to unvested awarded performance stock	(6,705		)	(5,695		)	(5,186		)
Net income attributable to common shares	$	250,786		$	237,623		$	201,710
Weighted-average number of common shares outstanding – basic	139,779			141,113			144,568
Less unvested awarded performance stock included in weighted-average number of common shares outstanding – basic	(3,640		)	(3,303		)	(3,624		)
Weighted-average number of common shares outstanding for basic earnings per common share	136,139			137,810			140,944
Dilutive effect of stock options	1,665			2,302			1,947
Weighted-average number of shares outstanding – diluted	137,804			140,112			142,891
Net income per share:
Basic	$	1.84		$	1.72		$	1.43
Diluted	$	1.82		$	1.70		$	1.41

Business Combinations

12 Months Ended

Dec. 31, 2016

Business Combinations [Abstract]

Business Combinations

During the year ended December 31, 2016, the Company acquired the assets and assumed certain liabilities of seven insurance intermediaries, all of the stock of one insurance intermediary and three books of business (customer accounts). Additionally, miscellaneous adjustments were recorded to the purchase price allocation of certain prior acquisitions completed within the last twelve months as permitted by Accounting Standards Codification Topic 805 — Business Combinations (“ASC 805”). Such adjustments are presented in the “Other” category within the following two tables. All of these businesses were acquired primarily to expand Brown & Brown’s core business and to attract and hire high-quality individuals. The recorded purchase price for all acquisitions consummated after January 1, 2009 included an estimation of the fair value of liabilities associated with any potential earn-out provisions. Subsequent changes in the fair value of earn-out obligations will be recorded in the Consolidated Statement of Income when incurred.

The fair value of earn-out obligations is based upon the present value of the expected future payments to be made to the sellers of the acquired businesses in accordance with the provisions outlined in the respective purchase agreements. In determining fair value, the acquired business’s future performance is estimated using financial projections developed by management for the acquired business and reflects market participant assumptions regarding revenue growth and/or profitability. The expected future payments are estimated on the basis of the earn-out formula and performance targets specified in each purchase agreement compared to the associated financial projections. These payments are then discounted to present value using a risk-adjusted rate that takes into consideration the likelihood that the forecasted earn-out payments will be made.

Based upon the acquisition date and the complexity of the underlying valuation work, certain amounts included in the Company’s Consolidated Financial Statements may be provisional and thus subject to further adjustments within the permitted measurement period, as defined in ASC 805. For the year ended December 31, 2016, several adjustments were made within the permitted measurement period that resulted in a decrease in the aggregate purchase price of the affected acquisitions of $917,497 relating to the assumption of certain liabilities. These measurement period adjustments have been reflected as current period adjustments for the year ended December 31, 2016 in accordance with the guidance in ASU 2015-16 “Business Combinations.” The measurement period adjustments impacted goodwill, with no effect on earnings or cash in the current period.

Cash paid for acquisitions was $124.7 million and $136.0 million in the years ended December 31, 2016 and 2015, respectively. We completed eight acquisitions (excluding book of business purchases) during the year ended December 31, 2016. We completed thirteen acquisitions (excluding book of business purchases) in the twelve-month period ended December 31, 2015.

The following table summarizes the purchase price allocation made as of the date of each acquisition for current year acquisitions and significant adjustments made during the measurement period for prior year acquisitions:



(in thousands)
Name	Business Segment	Effective Date of Acquisition	Cash Paid		Note Payable		Other Payable		Recorded Earn-Out Payable		Net Assets Acquired		Maximum Potential Earn- Out Payable
Social Security Advocates for the Disabled LLC (SSAD)	Services	February 1, 2016	$	32,526	$	492	$	—	$	971	$	33,989	$	3,500
Morstan General Agency, Inc. (Morstan)	Wholesale Brokerage	June 1, 2016	66,050		—		10,200		3,091		79,341		5,000
Other	Various	Various	26,140		—		464		400		27,004		7,785
Total			$	124,716	$	492	$	10,664	$	4,462	$	140,334	$	16,285

The following table summarizes the estimated fair values of the aggregate assets and liabilities acquired as of the date of each acquisition.



(in thousands)	SSAD			Morstan			Other			Total
Cash	$	2,094		$	—		$	—		$	2,094
Other current assets	1,042			2,482			1,555			5,079
Fixed assets	307			300			77			684
Goodwill	22,352			51,454			19,570			93,376
Purchased customer accounts	13,069			26,481			11,075			50,625
Non-compete agreements	72			39			117			228
Other assets	—			—			20			20
Total assets acquired	38,936			80,756			32,414			152,106
Other current liabilities	(1,717		)	(1,415		)	(5,410		)	(8,542		)
Deferred income tax, net	(3,230		)	—			—			(3,230		)
Total liabilities assumed	(4,947		)	(1,415		)	(5,410		)	(11,772		)
Net assets acquired	$	33,989		$	79,341		$	27,004		$	140,334

The weighted-average useful lives for the acquired amortizable intangible assets are as follows: purchased customer accounts, 15 years; and non-compete agreements, 5 years.

Goodwill of $93.4 million was allocated to the Retail, National Programs, Wholesale Brokerage and Services Segments in the amounts of $13.1 million, $(1.2) thousand, $57.9 million and $22.4 million, respectively. Of the total goodwill of $93.4 million, $88.9 million is currently deductible for income tax purposes. The remaining $4.5 million relates to the recorded earn-out payables and will not be deductible until it is earned and paid.

For the acquisitions completed during 2016, the results of operations since the acquisition dates have been combined with those of the Company. The total revenues from the acquisitions completed through December 31, 2016, included in the Consolidated Statement of Income for the year ended December 31, 2016, were $34.2 million. The income before income taxes, including the intercompany cost of capital charge, from the acquisitions completed through December 31, 2016, included in the Consolidated Statement of Income for the year ended December 31, 2016, was $4.3 million. If the acquisitions had occurred as of the beginning of the respective periods, the Company’s results of operations would be as shown in the following table. These unaudited pro forma results are not necessarily indicative of the actual results of operations that would have occurred had the acquisitions actually been made at the beginning of the respective periods.



(UNAUDITED)	For the Year Ended December 31,
(in thousands, except per share data)	2016		2015
Total revenues	$	1,789,790	$	1,716,592
Income before income taxes	$	428,194	$	414,911
Net income	$	260,346	$	250,783
Net income per share:
Basic	$	1.86	$	1.78
Diluted	$	1.84	$	1.75
weighted-average number of shares outstanding:
Basic	136,139		137,810
Diluted	137,804		140,112

Acquisitions in 2015

During the year ended December 31, 2015, Brown & Brown acquired the assets and assumed certain liabilities of thirteen insurance intermediaries and four books of business (customer accounts). The cash paid for these acquisitions was $136.0 million. Additionally, miscellaneous adjustments were recorded to the purchase price allocation of certain prior acquisitions completed within the last twelve months as permitted by Accounting Standards Codification Topic 805 — Business Combinations (“ASC 805”). Such adjustments are presented in ‘Other’ within the following two tables. All of these businesses were acquired primarily to expand Brown & Brown’s core business and to attract and hire high-quality individuals.

For the year ended December 31, 2015, several adjustments were made within the permitted measurement period that resulted in a decrease in the aggregate purchase price of the affected acquisitions of $503,442 relating to the assumption of certain liabilities.



(in thousands)
Name	Business Segment	Effective Date of Acquisition	Cash Paid		Other Payable		Recorded Earn-Out Payable		Net Assets Acquired		Maximum Potential Earn- Out Payable
Liberty Insurance Brokers, Inc. and Affiliates (Liberty)	Retail	February 1, 2015	$	12,000	$	—	$	2,981	$	14,981	$	3,750
Spain Agency, Inc. (Spain)	Retail	March 1, 2015	20,706		—		2,617		23,323		9,162
Bellingham Underwriters, Inc. (Bellingham)	National Programs	May 1, 2015	9,007		500		3,322		12,829		4,400
Fitness Insurance, LLC (Fitness)	Retail	June 1, 2015	9,455		—		2,379		11,834		3,500
Strategic Benefit Advisors, Inc. (SBA)	Retail	June 1, 2015	49,600		400		13,587		63,587		26,000
Bentrust Financial, Inc. (Bentrust)	Retail	December 1, 2015	10,142		391		319		10,852		2,200
MBA Insurance Agency of Arizona, Inc. (MBA)	Retail	December 1, 2015	68		8,442		6,063		14,573		9,500
Smith Insurance, Inc. (Smith)	Retail	December 1, 2015	12,096		200		1,047		13,343		6,350
Other	Various	Various	12,926		95		4,584		17,605		8,212
Total			$	136,000	$	10,028	$	36,899	$	182,927	$	73,074

The following table summarizes the estimated fair values of the aggregate assets and liabilities acquired as of the date of each acquisition. The data included in the ‘Other’ column shows a negative adjustment for purchased customer accounts. This is driven mainly by the final valuation adjustment for the acquisition of Wright.



(in thousands)	Liberty			Spain			Bellingham			Fitness			SBA		Bentrust			MBA			Smith			Other			Total
Other current assets	$	2,486		$	324		$	—		$	9		$	652	$	—		$	—		$	—		$	169		$	3,640
Fixed assets	40			50			25			17			41		36			33			73			59			374
Goodwill	10,010			15,748			9,608			8,105			39,859		8,166			13,471			10,374			21,040			136,381
Purchased customer accounts	4,506			7,430			3,223			3,715			23,000		2,789			7,338			3,526			(2,135		)	53,392
Non-compete agreements	24			21			21			—			21		43			11			31			156			328
Other assets	—			—			—			—			14		—			—			—			—			14
Total assets acquired	17,066			23,573			12,877			11,846			63,587		11,034			20,853			14,004			19,289			194,129
Other current liabilities	(42		)	(250		)	(48		)	(12		)	—		(182		)	(6,280		)	(504		)	(4,895		)	(12,213		)
Deferred income tax, net	—			—			—			—			—		—			—			—			2,576			2,576
Other liabilities	(2,043		)	—			—			—			—		—			—			(157		)	635			(1,565		)
Total liabilities assumed	(2,085		)	(250		)	(48		)	(12		)	—		(182		)	(6,280		)	(661		)	(1,684		)	(11,202		)
Net assets acquired	$	14,981		$	23,323		$	12,829		$	11,834		$	63,587	$	10,852		$	14,573		$	13,343		$	17,605		$	182,927

The weighted-average useful lives for the acquired amortizable intangible assets are as follows: purchased customer accounts, 15 years; and non-compete agreements, 5 years.

Goodwill of $136.4 million was allocated to the Retail, National Programs and Wholesale Brokerage Segments in the amounts of $113.8 million, $18.0 million and $4.6 million, respectively. Of the total goodwill of $136.4 million, $91.1 million is currently deductible for income tax purposes and $8.4 million is non-deductible. The remaining $36.9 million relates to the recorded earn-out payables and will not be deductible until it is earned and paid.

For the acquisitions completed during 2015, the results of operations since the acquisition dates have been combined with those of the Company. The total revenues from the acquisitions completed through December 31, 2015, included in the Consolidated Statement of Income for the year ended December 31, 2015, were $28.2 million. The income before income taxes, including the intercompany cost of capital charge, from the acquisitions completed through December 31, 2015, included in the Consolidated Statement of Income for the year ended December 31, 2015, was $1.5 million. If the acquisitions had occurred as of the beginning of the respective periods, the Company’s results of operations would be as shown in the following table. These unaudited pro forma results are not necessarily indicative of the actual results of operations that would have occurred had the acquisitions actually been made at the beginning of the respective periods.



(UNAUDITED)	For the Year Ended December 31,
(in thousands, except per share data)	2015		2014
Total revenues	$	1,688,297	$	1,630,992
Income before income taxes	$	411,497	$	356,426
Net income	$	248,720	$	217,053
Net income per share:
Basic	$	1.76	$	1.50
Diluted	$	1.73	$	1.48
weighted-average number of shares outstanding:
Basic	137,810		140,944
Diluted	140,112		142,891

Acquisitions in 2014

During the year ended December 31, 2014, Brown & Brown acquired the assets and assumed certain liabilities of nine insurance intermediaries, all of the stock of one insurance intermediary that owns an insurance carrier and five books of business (customer accounts). The cash paid for these acquisitions was $721.9 million. Additionally, miscellaneous adjustments were recorded to the purchase price allocation of certain prior acquisitions completed within the last twelve months as permitted by Accounting Standards Codification Topic 805 — Business Combinations (“ASC 805”). Such adjustments are presented in the “Other” category within the following two tables. All of these acquisitions were acquired primarily to expand Brown & Brown’s core business and to attract and hire high-quality individuals.

For the year ended December 31, 2014, several adjustments were made within the permitted measurement period that resulted in a decrease in the aggregate purchase price of the affected acquisitions of $25,941 relating to the assumption of certain liabilities.

The following table summarizes the purchase price allocation made as of the date of each acquisition for current year acquisitions and significant adjustment made during the measurement period for prior year acquisitions:



(in thousands)
Name	Business Segment	Effective Date of Acquisition	Cash Paid		Other Payable		Recorded Earn-Out Payable		Net Assets Acquired		Maximum Potential Earn- Out Payable
The Wright Insurance Group, LLC (Wright)	National Programs	May 1, 2014	$	609,183	$	1,471	$	—	$	610,654	$	—
Pacific Resources Benefits Advisors, LLC (PacRes)	Retail	May 1, 2014	90,000		—		27,452		117,452		35,000
Axia Strategies, Inc (Axia)	Wholesale Brokerage	May 1, 2014	9,870		—		1,824		11,694		5,200
Other	Various	Various	12,798		433		3,953		17,184		9,262
Total			$	721,851	$	1,904	$	33,229	$	756,984	$	49,462

The following table summarizes the estimated fair values of the aggregate assets and liabilities acquired as of the date of each acquisition.



(in thousands)	Wright			PacRes			Axia		Other			Total
Cash	$	25,365		$	—		$	—	$	—		$	25,365
Other current assets	16,474			3,647			101		742			20,964
Fixed assets	7,172			53			24		1,724			8,973
Reinsurance recoverable	25,238			—			—		—			25,238
Prepaid reinsurance premiums	289,013			—			—		—			289,013
Goodwill	420,209			76,023			7,276		10,417			513,925
Purchased customer accounts	213,677			38,111			4,252		4,384			260,424
Non-compete agreements	966			21			41		166			1,194
Other assets	20,045			—			—		—			20,045
Total assets acquired	1,018,159			117,855			11,694		17,433			1,165,141
Other current liabilities	(14,322		)	(403		)	—		(249		)	(14,974		)
Losses and loss adjustment reserve	(25,238		)	—			—		—			(25,238		)
Unearned premiums	(289,013		)	—			—		—			(289,013		)
Deferred income tax, net	(46,566		)	—			—		—			(46,566		)
Other liabilities	(32,366		)	—			—		—			(32,366		)
Total liabilities assumed	(407,505		)	(403		)	—		(249		)	(408,157		)
Net assets acquired	$	610,654		$	117,452		$	11,694	$	17,184		$	756,984

The weighted-average useful lives for the acquired amortizable intangible assets are as follows: purchased customer accounts, 15 years; and non-compete agreements, 3.4 years.

Goodwill of $513.9 million was allocated to the Retail, National Programs, Wholesale Brokerage and Services Segments in the amounts of $86.4 million, $420.0 million, $7.7 million and $(0.2) million, respectively. Of the total goodwill of $513.9 million, $141.9 million is currently deductible for income tax purposes and $338.8 million is non-deductible. The remaining $33.2 million relates to the recorded earn-out payables and will not be deductible until it is earned and paid.

For the acquisitions completed during 2014, the results of operations since the acquisition dates have been combined with those of the Company. The total revenues and income before income taxes, including the intercompany cost of capital, from the acquisitions completed through December 31, 2014, included in the Consolidated Statement of Income for the year ended December 31, 2014, were $112.2 million and $(1.3) million, respectively. If the acquisitions had occurred as of the beginning of the respective periods, the Company’s results of operations would be as shown in the following table. These unaudited pro forma results are not necessarily indicative of the actual results of operations that would have occurred had the acquisitions actually been made at the beginning of the respective periods.



(UNAUDITED)	For the Year Ended December 31,
(in thousands, except per share data)	2014		2013
Total revenues	$	1,630,162	$	1,520,858
Income before income taxes	$	358,229	$	409,522
Net income	$	218,150	$	248,628
Net income per share:
Basic	$	1.51	$	1.72
Diluted	$	1.49	$	1.70
Weighted-average number of shares outstanding:
Basic	140,944		141,033
Diluted	142,891		142,624

As of December 31, 2016, the maximum future contingency payments related to all acquisitions totaled $117.2 million, all of which relates to acquisitions consummated subsequent to January 1, 2009.

ASC Topic 805-Business Combinations is the authoritative guidance requiring an acquirer to recognize 100% of the fair values of acquired assets, including goodwill, and assumed liabilities (with only limited exceptions) upon initially obtaining control of an acquired entity. Additionally, the fair value of contingent consideration arrangements (such as earn-out purchase arrangements) at the acquisition date must be included in the purchase price consideration. As a result, the recorded purchase prices for all acquisitions consummated after January 1, 2009 include an estimation of the fair value of liabilities associated with any potential earn-out provisions. Subsequent changes in these earn-out obligations will be recorded in the Consolidated Statement of Income when incurred. Potential earn-out obligations are typically based upon future earnings of the acquired entities, usually between one and three years.

As of December 31, 2016, the fair values of the estimated acquisition earn-out payables were re-evaluated and measured at fair value on a recurring basis using unobservable inputs (Level 3) as defined in ASC 820-Fair Value Measurement. The resulting additions, payments, and net changes, as well as the interest expense accretion on the estimated acquisition earn-out payables, for the years ended December 31, 2016, 2015 and 2014 were as follows:



	For the Year Ended December 31,
(in thousands)	2016			2015			2014
Balance as of the beginning of the period	$	78,387		$	75,283		$	43,058
Additions to estimated acquisition earn-out payables	4,462			36,899			34,356
Payments for estimated acquisition earn-out payables	(28,213		)	(36,798		)	(12,069		)
Subtotal	54,636			75,384			65,345
Net change in earnings from estimated acquisition earn-out payables:
Change in fair value on estimated acquisition earn-out payables	6,338			13			7,375
Interest expense accretion	2,847			2,990			2,563
Net change in earnings from estimated acquisition earn-out payables	9,185			3,003			9,938
Balance as of December 31,	$	63,821		$	78,387		$	75,283

Of the $63.8 million estimated acquisition earn-out payables as of December 31, 2016, $31.8 million was recorded as accounts payable and $32.0 million was recorded as other non-current liabilities. Included within additions to estimated acquisition earn-out payables are any adjustments to opening balance sheet items prior to the one-year anniversary date and may therefore differ from previously reported amounts. Of the $78.4 million estimated acquisition earn-out payables as of December 31, 2015, $25.3 million was recorded as accounts payable and $53.1 million was recorded as other non-current liabilities. Of the $75.3 million estimated acquisition earn-out payables as of December 31, 2014, $26.0 million was recorded as accounts payable and $49.3 million was recorded as an other non-current liability.

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1497-128463

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1490-128463

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1486-128463

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1524-128463

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7000-128479

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4922-128472

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4934-128472

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4926-128472

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 4A
-URI http://asc.fasb.org/extlink&oid=73530397&loc=SL65897772-128472

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1383-128463

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6996-128479

+ Details

Goodwill

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill

The changes in the carrying value of goodwill by reportable segment for the years ended December 31, are as follows:



(in thousands)	Retail			National Programs			Wholesale Brokerage		Services			Total
Balance as of January 1, 2015	$	1,231,869		$	886,095		$	222,356	$	120,291		$	2,460,611
Goodwill of acquired businesses	113,767			18,009			4,605		—			136,381
Goodwill disposed of relating to sales of businesses	—			(2,238		)	—		(8,071		)	(10,309		)
Balance as of December 31, 2015	$	1,345,636		$	901,866		$	226,961	$	112,220		$	2,586,683
Goodwill of acquired businesses	13,117			(1		)	57,908		22,352			93,376
Goodwill of transferred businesses	571			(571		)	—		—			—
Goodwill disposed of relating to sales of businesses	(4,657		)	—			—		—			(4,657		)
Balance as of December 31, 2016	$	1,354,667		$	901,294		$	284,869	$	134,572		$	2,675,402

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Amortizable Intangible Assets

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Amortizable Intangible Assets

Amortizable intangible assets at December 31, 2016 and 2015 consisted of the following:



	December 31, 2016								December 31, 2015
(in thousands)	Gross Carrying Value		Accumulated Amortization			Net Carrying Value		Weighted Average Life in Years⁽¹⁾	Gross Carrying Value		Accumulated Amortization			Net Carrying Value		Weighted Average Life in Years⁽¹⁾
Purchased customer accounts	$	1,447,680	$	(741,770	)	$	705,910	15.0	$	1,398,986	$	(656,799	)	$	742,187	15.0
Non-compete agreements	29,668		(28,124		)	1,544		6.8	29,440		(26,947		)	2,493		6.8
Total	$	1,477,348	$	(769,894	)	$	707,454		$	1,428,426	$	(683,746	)	$	744,680


(1)	Weighted-average life calculated as of the date of acquisition.

Amortization expense for amortizable intangible assets for the years ending December 31, 2017, 2018, 2019, 2020 and 2021 is estimated to be $84.9 million, $79.6 million, $75.1 million, $67.8 million, and $64.5 million, respectively.

Investments

12 Months Ended

Dec. 31, 2016

Investments, Debt and Equity Securities [Abstract]

Investments

At December 31, 2016, the Company’s amortized cost and fair values of fixed maturity securities are summarized as follows:



(in thousands)	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
U.S. Treasury securities, obligations of U.S. Government agencies and Municipals	$	26,280	$	11	$	(59	)	$	26,232
Corporate debt	2,358		13		(1		)	2,370
Total	$	28,638	$	24	$	(60	)	$	28,602

At December 31, 2016, the Company held $26.28 million in fixed income securities composed of U.S Treasury securities, securities issued by U.S. Government agencies and Municipalities, and $2.4 million issued by corporations with investment grade ratings. Of the total, $5.6 million is classified as short-term investments on the Consolidated Balance Sheet as maturities are less than one year in duration. Additionally, the Company holds $9.5 million in short-term investments which are related to time deposits held with various financial institutions.

For securities in a loss position, the following table shows the investments’ gross unrealized loss and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position as of December 31, 2016:



(in thousands)	Less than 12 Months					12 Months or More				Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. Treasury securities, obligations of U.S. Government agencies and Municipals	$	14,663	$	(59	)	$	—	$	—	$	14,663	$	(59	)
Foreign Government	—		—			—		—		—		—
Corporate debt	1,001		(1		)	—		—		1,001		(1		)
Total	$	15,664	$	(60	)	$	—	$	—	$	15,664	$	(60	)

The unrealized losses from corporate issuers were caused by interest rate increases. At December 31, 2016, the Company had 20 securities in an unrealized loss position. The corporate securities are highly rated securities with no indicators of potential impairment. Based upon the ability and intent of the Company to hold these investments until recovery of fair value, which may be maturity, the bonds were not considered to be other-than-temporarily impaired at December 31, 2016.

At December 31, 2015, the Company’s amortized cost and fair values of fixed maturity securities are summarized as follows:



(in thousands)	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
U.S. Treasury securities, obligations of U.S. Government agencies and Municipals	$	11,876	$	6	$	(26	)	$	11,856
Foreign government	50		—		—			50
Corporate debt	4,505		7		(16		)	4,496
Short duration fixed income fund	1,663		27		—			1,690
Total	$	18,094	$	40	$	(42	)	$	18,092

The following table shows the investments’ gross unrealized loss and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position as of December 31, 2015:



(in thousands)	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
U.S. Treasury securities, obligations of U.S. Government agencies and Municipals	$	8,998	$	(26	)	$	—	$	—		$	8,998	$	(26	)
Foreign Government	50		—			—		—			50		—
Corporate debt	2,731		(14		)	284		(2		)	3,015		(16		)
Total	$	11,779	$	(40	)	$	284	$	(2	)	$	12,063	$	(42	)

The unrealized losses in the Company’s investments in U.S. Treasury Securities and obligations of U.S. Government Agencies and bonds from corporate issuers were caused by interest rate increases. At December 31, 2015, the Company had 35 securities in an unrealized loss position. The contractual cash flows of the U.S. Treasury Securities and obligations of the U.S. Government agencies investments are either guaranteed by the U.S. Government or an agency of the U.S. Government. Accordingly, it is expected that the securities would not be settled at a price less than the amortized cost of the Company’s investment. The corporate securities are highly rated securities with no indicators of potential impairment. Based upon the ability and intent of the Company to hold these investments until recovery of fair value, which may be maturity, the bonds were not considered to be other-than-temporarily impaired at December 31, 2015.

The amortized cost and estimated fair value of the fixed maturity securities at December 31, 2016 by contractual maturity are set forth below:



(in thousands)	Amortized Cost		Fair Value
Years to maturity:
Due in one year or less	$	5,551	$	5,554
Due after one year through five years	22,757		22,708
Due after five years through ten years	330		340
Total	$	28,638	$	28,602

The amortized cost and estimated fair value of the fixed maturity securities at December 31, 2015 by contractual maturity are set forth below:



(in thousands)	Amortized Cost		Fair Value
Years to maturity:
Due in one year or less	$	5,726	$	5,722
Due after one year through five years	12,038		12,041
Due after five years through ten years	330		329
Total	$	18,094	$	18,092

The expected maturities in the foregoing table may differ from the contractual maturities because certain borrowers have the right to call or prepay obligations with or without penalty.

Proceeds from the sales and maturity of the Company’s investment in fixed maturity securities were $6.0 million. This along with maturing time deposits and the utilization of funds from a money market account of $9.1 million yielded total cash proceeds from the sale of investments of $18.9 million in the period of January 1, 2016 to December 31, 2016. These proceeds were used to purchase additional fixed maturity securities. The gains and losses realized on those sales for the period from January 1, 2016 to December 31, 2016 were insignificant. Additionally, there was a sale of the short-duration fixed income fund which resulted in cash proceeds of $1.7 million, as the fund was liquidated in the third quarter of 2016. Gains on this sale were also insignificant.

Proceeds from sales of the Company’s investment in fixed maturity securities were $5.6 million including maturities for the year ended December 31, 2015. The gains and losses realized on those sales for the year ended December 31, 2015 were insignificant.

Realized gains and losses are reported on the Consolidated Statement of Income, with the cost of securities sold determined on a specific identification basis.

At December 31, 2016, investments with a fair value of approximately $4.0 million were on deposit with state insurance departments to satisfy regulatory requirements.

- Definition

The entire disclosure for investments in certain debt and equity securities.

+ References + Details

Fixed Assets (Notes)

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment Disclosure [Text Block]

Fixed Assets

Fixed assets at December 31 consisted of the following:



(in thousands)	2016			2015
Furniture, fixtures and equipment	$	177,823		$	169,682
Leasehold improvements	33,137			32,132
Land, buildings and improvements	3,375			3,370
Total cost	214,335			205,184
Less accumulated depreciation and amortization	(138,528		)	(123,431		)
Total	$	75,807		$	81,753

Depreciation and amortization expense for fixed assets amounted to $21.0 million in 2016, $20.9 million in 2015, and $20.9 million in 2014.

Long-Term Debt

12 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

Long-Term Debt

Long-term debt at December 31, 2016 and 2015 consisted of the following:



(in thousands)	December 31, 2016			December 31, 2015
Current portion of long-term debt:
Current portion of 5-year term loan facility expires 2019	$	55,000		$	48,125
5.660% senior notes, Series C, semi-annual interest payments, balloon due 2016	—			25,000
Short-term promissory note	500			—
Total current portion of long-term debt	55,500			73,125
Long-term debt:
Note agreements:
4.500% senior notes, Series E, quarterly interest payments, balloon due 2018	100,000			100,000
4.200% senior notes, semi-annual interest payments, balloon due 2024	498,785			498,628
Total notes	598,785			598,628
Credit agreements:
5-year term loan facility, periodic interest and principal payments, LIBOR plus up to 1.750%, expires May 20, 2019	426,250			481,250
5-year revolving loan facility, periodic interest payments, currently LIBOR plus up to 1.500%, plus commitment fees up to 0.250%, expires May 20, 2019	—			—
Revolving credit loan, quarterly interest payments, LIBOR plus up to 1.400% and availability fee up to 0.250%, expires December 31, 2016	—			—
Total credit agreements	426,250			481,250
Debt issuance costs (contra)	(6,663		)	(8,260		)
Total long-term debt less unamortized discount and debt issuance costs	1,018,372			1,071,618
Current portion of long-term debt	55,500			73,125
Total debt	$	1,073,872		$	1,144,743

On December 22, 2006, the Company entered into a Master Shelf and Note Purchase Agreement (the “Master Agreement”) with a national insurance company (the “Purchaser”). The initial issuance of notes under the Master Agreement occurred on December 22, 2006, through the issuance of $25.0 million in Series C Senior Notes due December 22, 2016, with a fixed interest rate of 5.660% per year. On February 1, 2008, $25.0 million in Series D Senior Notes due January 15, 2015, with a fixed interest rate of 5.370% per year, were issued. On September 15, 2011, and pursuant to a Confirmation of Acceptance (the “Confirmation”), dated January 21, 2011, in connection with the Master Agreement, $100.0 million in Series E Senior Notes were issued and are due September 15, 2018, with a fixed interest rate of 4.500% per year. The Series E Senior Notes were issued for the sole purpose of retiring existing senior notes. On January 15, 2015, the Series D Notes were redeemed at maturity using cash proceeds to pay off the principal of $25.0 million plus any remaining accrued interest. On December 22, 2016, the Series C Notes were redeemed at maturity using cash proceeds to pay off the principal of $25.0 million plus any remaining accrued interest. As of December 31, 2016, there was an outstanding debt balance issued under the provisions of the Master Agreement of $100.0 million.

On July 1, 2013, in conjunction with the acquisition of Beecher Carlson Holdings, Inc., the Company entered into a revolving loan agreement (the “Wells Fargo Agreement”) with Wells Fargo Bank, N.A. that provided for a $50.0 million revolving line of credit (the “Wells Fargo Revolver”). On April 16, 2014, in connection with the signing of the Credit Facility (as defined below) an amendment to the agreement was established to reduce the total revolving loan commitment from $50.0 million to $25.0 million. The Wells Fargo Revolver may be increased by up to $50.0 million (bringing the total amount available to $75.0 million). The calculation of interest and fees for the Wells Fargo Agreement is generally based upon the Company’s funded debt-to-EBITDA ratio. Interest is charged at a rate equal to 1.000% to 1.400% above LIBOR or 1.000% below the Base Rate, each as more fully described in the Wells Fargo Agreement. Fees include an up-front fee, an availability fee of 0.175% to 0.250%, and a letter of credit margin fee of 1.000% to 1.400%. The obligations under the Wells Fargo Revolver are unsecured and the Wells Fargo Agreement includes various covenants, limitations and events of default that are customary for similar facilities for similar borrowers. The maturity date for the Wells Fargo Revolver was December 31, 2016. However, on March 14, 2016, the Wells Fargo Revolver was terminated before its maturity date with no fees incurred. There were no borrowings against the Wells Fargo Revolver as of December 31, 2016 or as of December 31, 2015.

On April 17, 2014, the Company entered into a credit agreement with JPMorgan Chase Bank, N.A. as administrative agent and certain other banks as co-syndication agents and co-documentation agents (the “Credit Agreement”). The Credit Agreement in the amount of $1,350.0 million provides for an unsecured revolving credit facility (the “Credit Facility”) in the initial amount of $800.0 million and unsecured term loans in the initial amount of $550.0 million, either or both of which may, subject to lenders’ discretion, potentially be increased by up to $500.0 million. The Credit Facility was funded on May 20, 2014 in conjunction with the closing of the Wright acquisition, with the $550.0 million term loan being funded as well as a drawdown of $375.0 million on the revolving loan facility. Use of these proceeds was to retire existing term loan debt and to facilitate the closing of the Wright acquisition as well as other acquisitions. The Credit Facility terminates on May 20, 2019, but either or both of the revolving credit facility and the term loans may be extended for two additional one-year periods at the Company’s request and at the discretion of the respective lenders. Interest and facility fees in respect to the Credit Facility are based upon the better of the Company’s net debt leverage ratio or a non-credit enhanced senior unsecured long-term debt rating. Based upon the Company’s net debt leverage ratio, the rates of interest charged on the term loan are 1.000% to 1.750%, and the revolving loan is 0.850% to 1.500% above the adjusted LIBOR rate for outstanding amounts drawn. There are fees included in the facility which include a facility fee based upon the revolving credit commitments of the lenders (whether used or unused) at a rate of 0.150% to 0.250% and letter of credit fees based upon the amounts of outstanding secured or unsecured letters of credit. The Credit Facility includes various covenants, limitations and events of default customary for similar facilities for similarly rated borrowers. As of December 31, 2016 and 2015, there was an outstanding debt balance issued under the provisions of the Credit Facility in total of $481.3 million and $529.4 million respectively, with no borrowings outstanding relative to the revolving loan. Per the terms of the agreement, scheduled principal payments of $55.0 million are due in 2017.

On September 18, 2014, the Company issued $500.0 million of 4.200% unsecured senior notes due in 2024. The senior notes were given investment grade ratings of BBB-/Baa3 with a stable outlook. The notes are subject to certain covenant restrictions and regulations which are customary for credit rated obligations. At the time of funding, the proceeds were offered at a discount of the original note amount which also excluded an underwriting fee discount. The net proceeds received from the issuance were used to repay the outstanding balance of $475.0 million on the revolving Credit Facility and for other general corporate purposes. As of December 31, 2016 and 2015, there was an outstanding debt balance of $500.0 million exclusive of the associated discount balance.

The Master Agreement, Wells Fargo Agreement and the Credit Agreement all require the Company to maintain certain financial ratios and comply with certain other covenants. The Company was in compliance with all such covenants as of December 31, 2016 and 2015.

The 30-day Adjusted LIBOR Rate as of December 31, 2016 was 0.813%.

Interest paid in 2016, 2015 and 2014 was $37.7 million, $37.5 million, and $25.1 million, respectively.

At December 31, 2016, maturities of long-term debt were $55.5 million in 2017, $155.0 million in 2018, $371.3 million in 2019, and $500.0 million in 2024.

Income Taxes (Notes)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Income Tax Disclosure [Text Block]

Income Taxes

Significant components of the provision for income taxes for the years ended December 31 are as follows:



(in thousands)	2016		2015		2014
Current:
Federal	$	126,145	$	118,490	$	109,893
State	21,110		17,625		15,482
Foreign	590		430		109
Total current provision	147,845		136,545		125,484
Deferred:
Federal	15,551		18,416		5,987
State	2,612		4,280		1,440
Foreign	—		—		(58		)
Total deferred provision	18,163		22,696		7,369
Total tax provision	$	166,008	$	159,241	$	132,853

A reconciliation of the differences between the effective tax rate and the federal statutory tax rate for the years ended December 31 is as follows:



	2016	2015	2014
Federal statutory tax rate	35.0%	35.0%	35.0%
State income taxes, net of federal income tax benefit	3.9	3.9	3.3
Non-deductible employee stock purchase plan expense	0.3	0.3	0.3
Non-deductible meals and entertainment	0.3	0.3	0.4
Other, net	(0.3)	0.1	0.1
Effective tax rate	39.2%	39.6%	39.1%

Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the corresponding amounts used for income tax reporting purposes.

Significant components of Brown & Brown’s current deferred tax assets as of December 31 are as follows:



(in thousands)	2016		2015
Current deferred tax assets:
Deferred profit-sharing contingent commissions	$	10,567	$	9,767
Net operating loss carryforwards	10		10
Accruals and reserves	14,032		14,858
Total current deferred tax assets	$	24,609	$	24,635

Significant components of Brown & Brown’s non-current deferred tax liabilities and assets as of December 31 are as follows:



(in thousands)	2016			2015
Non-current deferred tax liabilities:
Fixed assets	$	6,425		$	8,585
Net unrealized holding (loss)/gain on available-for-sale securities	(12		)	(9		)
Intangible assets	422,478			393,251
Total non-current deferred tax liabilities	428,891			401,827
Non-current deferred tax assets:
Deferred compensation	44,912			38,966
Net operating loss carryforwards	2,384			2,518
Valuation allowance for deferred tax assets	(700		)	(606		)
Total non-current deferred tax assets	46,596			40,878
Net non-current deferred tax liability	$	382,295		$	360,949

Income taxes paid in 2016, 2015 and 2014 were $143.1 million, $132.9 million, and $118.3 million respectively.

At December 31, 2016, Brown & Brown had net operating loss carryforwards of $156,435 and $60.2 million for federal and state income tax reporting purposes, respectively, portions of which expire in the years 2017 through 2036. The federal carryforward is derived from insurance operations acquired by Brown & Brown in 2001. The state carryforward amount is derived from the operating results of certain subsidiaries and from the 2013 stock acquisition of Beecher Carlson Holdings, Inc.

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:



(in thousands)	2016			2015			2014
Unrecognized tax benefits balance at January 1	$	584		$	113		$	391
Gross increases for tax positions of prior years	412			773			—
Gross decreases for tax positions of prior years	(41		)	—			(21		)
Settlements	(205		)	(302		)	(257		)
Unrecognized tax benefits balance at December 31	$	750		$	584		$	113

The Company recognizes interest and penalties related to uncertain tax positions in income tax expense. As of December 31, 2016 and 2015, the Company had $86,191 and $102,171 of accrued interest and penalties related to uncertain tax positions, respectively.

The total amount of unrecognized tax benefits that would affect the Company’s effective tax rate if recognized was $750,258 as of December 31, 2016 and $583,977 as of December 31, 2015. The Company does not expect its unrecognized tax benefits to change significantly over the next 12 months.

As a result of a 2006 Internal Revenue Service (“IRS”) audit, the Company agreed to accrue at each December 31, for tax purposes only, a known amount of profit-sharing contingent commissions represented by the actual amount of profit-sharing contingent commissions received in the first quarter of the related year, with a true-up adjustment to the actual amount received by the end of the following March. Since this method for tax purposes differs from the method used for book purposes, it will result in a current deferred tax asset as of December 31 each year which will reverse by the following March 31 when the related profit-sharing contingent commissions are recognized for financial accounting purposes.

The Company is subject to taxation in the United States and various state jurisdictions. The Company is also subject to taxation in the United Kingdom. In the United States, federal returns for fiscal years 2013 through 2016 remain open and subject to examination by the IRS. The Company files and remits state income taxes in various states where the Company has determined it is required to file state income taxes. The Company’s filings with those states remain open for audit for the fiscal years 2011 through 2016. In the United Kingdom, the Company’s filings remain open for audit for the fiscal years 2015 and 2016.

The federal income tax returns of The Wright Insurance Group are currently under IRS audit for the short period ended May 1, 2014. Also during 2016, the Company settled the previously disclosed State of Kansas audit for fiscal years 2012 through 2014 in the amount of $204,695. The Company and one of its subsidiaries, The Advocator Group, LLC, is currently under examination by the State of Massachusetts for the fiscal year 2013 through 2014. There are no other federal or state income tax audits as of December 31, 2016.

In general, it is our practice and intention to reinvest the earnings of our non-U.S. subsidiaries in those operations. As of December 31, 2016, we have not made a provision for U.S. or additional foreign withholding taxes on approximately $2.6 million of the excess of the amount for financial reporting over the tax basis of investments in foreign subsidiaries that is indefinitely reinvested. Generally, such amounts become subject to U.S. taxation upon the remittance of dividends and under certain other circumstances. It is not practicable to estimate the amount of deferred tax liability related to investments in these foreign subsidiaries.

Stock Based Compensation (Notes) - shares

12 Months Ended

Dec. 31, 2016

Dec. 31, 2012

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross

5,174,190

Disclosure of Compensation Related Costs, Share-based Payments [Text Block]

Stock-Based Compensation

Performance Stock Plan

In 1996, Brown & Brown adopted and the shareholders approved a performance stock plan, under which until the suspension of the plan in 2010, up to 14,400,000 Performance Stock Plan (“PSP”) shares could be granted to key employees contingent on the employees’ future years of service with Brown & Brown and other performance-based criteria established by the Compensation Committee of the Company’s Board of Directors. Before participants may take full title to Performance Stock, two vesting conditions must be met. Of the grants currently outstanding, specified portions satisfied the first condition for vesting based upon 20% incremental increases in the 20-trading-day average stock price of Brown & Brown’s common stock from the price on the business day prior to date of grant. Performance Stock that has satisfied the first vesting condition is considered “awarded shares.” Awarded shares are included as issued and outstanding common stock shares and are included in the calculation of basic and diluted EPS. Dividends are paid on awarded shares and participants may exercise voting privileges on such shares. Awarded shares satisfy the second condition for vesting on the earlier of a participant’s: (i) 15 years of continuous employment with Brown & Brown from the date shares are granted to the participants (or, in the case of the July 2009 grant to Powell Brown, 20 years); (ii) attainment of age 64 (on a prorated basis corresponding to the number of years since the date of grant); or (iii) death or disability. On April 28, 2010, the PSP was suspended and any remaining authorized, but unissued shares, as well as any shares forfeited in the future, will be reserved for issuance under the 2010 Stock Incentive Plan (the “SIP”).

At December 31, 2016, 5,174,190 shares had been granted under the PSP. As of December 31, 2016, 1,003,275 shares had met the first condition of vesting and had been awarded, and 4,170,915 shares had satisfied both conditions of vesting and had been distributed to participants. Of the shares that have not vested as of December 31, 2016, the initial stock prices ranged from $13.65 to $25.68.

The Company uses a path-dependent lattice model to estimate the fair value of PSP grants on the grant date.

A summary of PSP activity for the years ended December 31, 2016, 2015 and 2014 is as follows:



	Weighted- Average Grant Date Fair Value		Granted Shares		Awarded Shares		Shares Not Yet Awarded
Outstanding at January 1, 2014	$	8.62	2,371,287		2,295,852		75,435
Granted	$	—	—		—		—
Awarded	$	—	—		—		—
Vested	$	16.76	(277,009	)	(277,009	)	—
Forfeited	$	9.75	(165,647	)	(115,630	)	(50,017	)
Outstanding at December 31, 2014	$	8.71	1,928,631		1,903,213		25,418
Granted	$	—	—		—		—
Awarded	$	—	—		—		—
Vested	$	5.55	(208,889	)	(208,889	)	—
Forfeited	$	9.78	(117,528	)	(100,110	)	(17,418	)
Outstanding at December 31, 2015	$	9.03	1,602,214		1,594,214		8,000
Granted	$	—	—		—		—
Awarded	$	—	—		4,000		(4,000	)
Vested	$	6.39	(506,422	)	(506,422	)	—
Forfeited	$	10.52	(92,517	)	(88,517	)	(4,000	)
Outstanding at December 31, 2016	$	10.23	1,003,275		1,003,275		—

The total fair value of PSP grants that vested during each of the years ended December 31, 2016, 2015 and 2014 was $18.1 million, $6.8 million and $8.4 million, respectively.

Stock Incentive Plan

On April 28, 2010, the shareholders of Brown & Brown, Inc. approved the Stock Incentive Plan (“SIP”) that provides for the granting of stock options, stock, restricted stock units, and/or stock appreciation rights to employees and directors contingent on criteria established by the Compensation Committee of the Company’s Board of Directors. The principal purpose of the SIP is to attract, incentivize and retain key employees by offering those persons an opportunity to acquire or increase a direct proprietary interest in the Company’s operations and future success. The SIP includes a sub-plan applicable to Decus Insurance Brokers Limited (“Decus”) which, is a subsidiary of Decus Holdings (U.K.) Limited. The shares of stock reserved for issuance under the SIP are any shares that are authorized for issuance under the PSP and not already subject to grants under the PSP, and that were outstanding as of April 28, 2010, the date of suspension of the PSP, together with PSP shares and SIP shares forfeited after that date. As of April 28, 2010, 6,046,768 shares were available for issuance under the PSP, which were then transferred to the SIP. In addition, in May 2016 our shareholders approved an amendment to the SIP to increase the shares available for issuance by an additional 1,200,000.

The Company has granted stock grants to our employees in the form of Restricted Stock Awards and Peformance Stock Awards under the SIP. To date, a substantial majority of stock grants to employees under the SIP vest in four to ten years The Performance Stock Awards are subject to the achievement of certain performance criteria by grantees, which may include growth in a defined book of business, organic growth and operating profit growth of a profit center, EBITDA growth, organic growth of the Company and consolidated EPS growth at certain levels of the Company. The performance measurement period ranges from three to five years. Beginning in 2016, certain Performance Stock Awards have a payout range between 0% to 200% depending on the achievement against the stated performance target. Prior to 2016, the majority of the grants had a binary performance measurement criteria that only allowed for 0% or 100% payout.

In 2010, 187,040 shares were granted under the SIP. This grant was conditioned upon the surrender of 187,040 shares previously granted under the PSP in 2009, which were accordingly treated as forfeited PSP shares. The vesting conditions of this grant were identical to those provided for in connection with the 2009 PSP grant; thus the target stock prices and the periods associated with satisfaction of the first and second conditions of vesting were unchanged. Additionally, grants totaling 5,205 shares were made in 2010 to Decus employees under the SIP sub-plan applicable to Decus.

In 2011, 2,375,892 shares were granted under the SIP. Of this total, 24,670 shares were granted to Decus employees under the SIP sub-plan applicable to Decus.

In 2012, 814,545 shares were granted under the SIP, primarily related to the Arrowhead acquisition.

In 2013, 3,719,974 shares were granted under the SIP. Of the shares granted in 2013, 891,399 shares will vest upon the grantees’ completion of between three and seven years of service with the Company, and because grantees have the right to vote the shares and receive dividends immediately after the date of grant these shares are considered awarded and outstanding under the two-class method.

In 2014, 422,572 shares were granted under the SIP. Of the shares granted in 2014, 113,088 shares will vest upon the grantees’ completion of between three and six years of service with the Company, and because grantees have the right to vote the shares and receive dividends immediately after the date of grant these shares are considered awarded and outstanding under the two-class method.

In 2015, 481,166 shares were granted under the SIP. Of the shares granted in 2015, 164,646 shares will vest upon the grantees’ completion of between five and seven years of service with the Company, and because grantees have the right to vote the shares and receive dividends immediately after the date of grant these shares are considered awarded and outstanding under the two-class method.

In 2016, 972,099 shares were granted under the SIP. Of the shares granted in 2016, 182,653 shares will vest upon the grantees’ completion of five years of service with the Company, and because grantees have the right to vote the shares and receive dividends immediately after the date of grant these shares are considered awarded and outstanding under the two-class method.

Additionally, non-employee members of the Board of Directors received shares annually issued pursuant to the SIP as part of their annual compensation. A total of 36,919 SIP shares were issued to these directors in 2011 and 2012, of which 11,682 were issued in January 2011, 12,627 in January 2012, and 12,610 in December 2012. The shares issued in December 2012 were issued at that earlier time rather than in January 2013 pursuant to action of the Board of Directors. No additional shares were granted or issued to the non-employee members of the Board of Directors in 2013. A total of 9,870 shares were issued to these directors in January 2014, 15,700 shares were issued in January 2015 and 16,860 shares were issued in January 2016.

The following table sets forth information as of December 31, 2016, 2015, and 2014, with respect to the number of time-based restricted shares granted and awarded, the number of performance-based restricted shares granted, and the number of performance-based restricted shares awarded under our Performance Stock Plan and 2010 Stock Incentive Plan:



Year	Time-Based Restricted Stock Granted and Awarded	Performance-Based Restricted Stock Granted		Performance-Based Restricted Stock Awarded
2016	182,653	789,446	⁽¹⁾	1,435,319
2015	164,646	316,520		—
2014	113,088	309,484		—


(1)	Of the 789,446 shares of performance-based restricted stock granted in 2016, the payout for 353,132 shares may be increased up to 200% of the target or decreased to zero, subject to the level of performance attained. The amount reflected in the table includes all restricted stock grants at a target payout of 100%.

At December 31, 2016, 3,729,566 shares were available for future grants. This amount is calculated assuming the maximum payout for all restricted stock grants. The payout for 321,955 shares of our outstanding performance-based restricted stock grants may be increased up to 200% of the target or decreased to zero, subject to the level of performance attained.

The Company uses the closing stock price on the day prior to the grant date to determine the fair value of SIP grants and then applies an estimated forfeiture factor to estimate the annual expense. Additionally, the Company uses the path-dependent lattice model to estimate the fair value of grants with PSP-type vesting conditions as of the grant date. SIP shares that satisfied the first vesting condition for PSP-type grants or the established performance criteria are considered awarded shares. Awarded shares are included as issued and outstanding common stock shares and are included in the calculation of basic and diluted EPS.

A summary of SIP activity for the years ended December 31, 2016, 2015 and 2014 is as follows:



	Weighted- Average Grant Date Fair Value		Granted Shares		Awarded Shares		Shares Not Yet Awarded
Outstanding at January 1, 2014	$	27.96	6,606,101		995,717		5,610,384
Granted	$	31.02	422,572		113,088		309,484
Awarded	$	—	—		—		—
Vested	$	—	—		—		—
Forfeited	$	27.41	(369,626	)	(47,915	)	(321,711	)
Outstanding at December 31, 2014	$	28.19	6,659,047		1,060,890		5,598,157
Granted	$	31.74	481,166		164,646		316,520
Awarded	$	—	—		—		—
Vested	$	—	—		—		—
Forfeited	$	26.32	(863,241	)	(95,542	)	(767,699	)
Outstanding at December 31, 2015	$	28.74	6,276,972		1,129,994		5,146,978
Granted	$	35.52	972,099		182,653		789,446		⁽¹⁾
Awarded	$	24.93	—		1,431,319		(1,431,319	)
Vested	$	27.31	(166,884	)	(166,884	)	—
Forfeited	$	25.34	(954,131	)	(175,788	)	(778,343	)
Outstanding at December 31, 2016	$	29.96	6,128,056		2,401,294		3,726,762


(1)	Of the 789,446 shares of performance-based restricted stock granted in 2016, the payout for 353,132 shares may be increased up to 200% of the target or decreased to zero, subject to the level of performance attained. The amount reflected in the table includes all restricted stock grants at a target payout of 100%.

Employee Stock Purchase Plan

The Company has a shareholder-approved Employee Stock Purchase Plan (“ESPP”) with a total of 17,000,000 authorized shares of which 4,680,263 were available for future subscriptions as of December 31, 2016. Employees of the Company who regularly work more than 20 hours per week are eligible to participate in the ESPP. Participants, through payroll deductions, may allot up to 10% of their compensation, up to a maximum of $25,000, to purchase Company stock between August 1st of each year and the following July 31st (the “Subscription Period”) at a cost of 85% of the lower of the stock price as of the beginning or end of the Subscription Period.

The Company estimates the fair value of an ESPP share option as of the beginning of the Subscription Period as the sum of: (1) 15% of the quoted market price of the Company’s stock on the day prior to the beginning of the Subscription Period, and (2) 85% of the value of a one-year stock option on the Company stock using the Black-Scholes option-pricing model. The estimated fair value of an ESPP share option as of the Subscription Period beginning in August 2016 was $7.61. The fair values of an ESPP share option as of the Subscription Periods beginning in August 2015 and 2014, were $6.43 and $6.39, respectively.

For the ESPP plan years ended July 31, 2016, 2015 and 2014, the Company issued 514,665, 539,389, and 512,521 shares of common stock, respectively. These shares were issued at an aggregate purchase price of $15.0 million, or $29.23 per share, in 2016, $14.4 million, or $26.62 per share, in 2015, and $13.4 million, or $26.16 per share, in 2014.

For the five months ended December 31, 2016, 2015 and 2014 (portions of the 2016-2017, 2015-2016 and 2014-2015 plan years), 247,023; 231,803; and 235,794 shares of common stock (from authorized but unissued shares), respectively, were subscribed to by ESPP participants for proceeds of approximately $7.7 million, $6.8 million and $6.3 million, respectively.

Incentive Stock Option Plan

On April 21, 2000, Brown & Brown adopted, and the shareholders approved, a qualified incentive stock option plan (the “ISOP”) that provides for the granting of stock options to certain key employees for up to 4,800,000 shares of common stock. On December 31, 2008, the ISOP expired. The objective of the ISOP was to provide additional performance incentives to grow Brown & Brown’s pre-tax income in excess of 15% annually. The options were granted at the most recent trading day’s closing market price and vest over a one-to-ten-year period, with a potential acceleration of the vesting period to three-to-six years based upon achievement of certain performance goals. All of the options expire 10 years after the grant date.

The Company uses the Black-Scholes option-pricing model to estimate the fair value of stock options on the grant date. The risk-free interest rate is based upon the U.S. Treasury yield curve on the date of grant with a remaining term approximating the expected term of the option granted. The expected term of the options granted is derived from historical data; grantees are divided into two groups based upon expected exercise behavior and are considered separately for valuation purposes. The expected volatility is based upon the historical volatility of the Company’s common stock over the period of time equivalent to the expected term of the options granted. The dividend yield is based upon the Company’s best estimate of future dividend yield.

A summary of stock option activity for the years ended December 31, 2016, 2015 and 2014 is as follows:



Stock Options	Shares Under Option		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value (in thousands)
Outstanding at January 1, 2014	622,945		$	18.39	4.1	$	7,289
Granted	—		$	—
Exercised	(106,589	)	$	18.48
Forfeited	(46,000	)	$	18.48
Expired	—		$	—
Outstanding at December 31, 2014	470,356		$	18.57	3.1	$	5,087
Granted	—		$	—
Exercised	(151,767	)	$	18.48
Forfeited	(49,000	)	$	19.36
Expired	—		$	—
Outstanding at December 31, 2015	269,589		$	18.48	2.2	$	2,395
Granted	—		$	—
Exercised	(64,589	)	$	18.48
Forfeited	(30,000	)	$	18.48
Expired	—		$	—
Outstanding at December 31, 2016	175,000		$	18.48	1.2	$	4,616
Ending vested and expected to vest at December 31, 2016	175,000		$	18.48	1.2	$	4,616
Exercisable at December 31, 2016	175,000		$	18.48	1.2	$	4,616
Exercisable at December 31, 2015	164,589		$	18.48	2.2	$	2,241
Exercisable at December 31, 2014	316,356		$	18.48	3.2	$	4,565

The following table summarizes information about stock options outstanding at December 31, 2016:



Options Outstanding					Options Exercisable
Exercise Price	Number Outstanding	Weighted Average Remaining Contractual Life (years)	Weighted Average Exercise Price		Number Exercisable	Weighted Average Exercise Price
$18.48	175,000	1.2	$	18.48	175,000	$	18.48
Totals	175,000	1.2	$	18.48	175,000	$	18.48

The total intrinsic value of options exercised, determined as of the date of exercise, during the years ended December 31, 2016, 2015 and 2014 was $1.0 million, $2.2 million and $1.3 million, respectively. The total intrinsic value is calculated as the difference between the exercise price of all underlying awards and the quoted market price of the Company’s stock for all in-the-money stock options at December 31, 2016, 2015 and 2014, respectively.

There are no option shares available for future grant under the ISOP since this plan expired as of December 31, 2008.

Summary of Non-Cash Stock-Based Compensation Expense

The non-cash stock-based compensation expense for the years ended December 31 is as follows:



(in thousands)	2016		2015		2014
Stock Incentive Plan	$	11,049	$	11,111	$	14,447
Employee Stock Purchase Plan	3,698		3,430		2,425
Performance Stock Plan	1,305		972		2,354
Incentive Stock Option Plan	—		—		137
Total	$	16,052	$	15,513	$	19,363

Summary of Unrecognized Compensation Expense

As of December 31, 2016, there was approximately $92.1 million of unrecognized compensation expense related to all non-vested stock-based compensation arrangements granted under the Company’s stock-based compensation plans. That expense is expected to be recognized over a weighted-average period of 4.3 years.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References + Details

Supplemental Disclosures of Cash Flow Information and Non-Cash Financing and Investing Activities

12 Months Ended

Dec. 31, 2016

Supplemental Cash Flow Elements [Abstract]

Supplemental Disclosures of Cash Flow Information and Non-Cash Financing and Investing Activities

Our Restricted Cash balance is comprised of funds held in separate premium trust accounts as required by state law or, in some cases, per agreement with our carrier partners. In the second quarter of 2015, certain balances that had previously been reported as held in restricted premium trust accounts were reclassified as non-restricted as they were not restricted by state law or by contractual agreement with a carrier. The resulting impact of this change was a reduction in the balance reported on our Consolidated Balance Sheet as Restricted Cash and Investments and a corresponding increase in the balance reported as Cash and Cash Equivalents of approximately $33.0 million as of December 31, 2015 as compared to the corresponding account balances as of December 31, 2014 of $32.2 million which was reflected as Restricted Cash. While these referenced funds are not restricted, they do represent premium payments from customers to be paid to insurance carriers and this change in classification should not be viewed as a source of operating cash.



	For the Year Ended December 31,
(in thousands)	2016		2015		2014
Cash paid during the period for:
Interest	$	37,652	$	37,542	$	25,115
Income taxes	$	143,111	$	132,874	$	118,290

Brown & Brown’s significant non-cash investing and financing activities are summarized as follows:



	For the Year Ended December 31,
(in thousands)	2016		2015		2014
Other payables issued for purchased customer accounts	$	10,664	$	10,029	$	1,930
Estimated acquisition earn-out payables and related charges	$	4,463	$	36,899	$	33,229
Notes payable issued or assumed for purchased customer accounts	$	492	$	—	$	—
Notes received on the sale of fixed assets and customer accounts	$	22	$	7,755	$	6,340

Quarterly Operating Results (Notes)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information [Text Block]

Quarterly Operating Results (Unaudited)

Quarterly operating results for 2016 and 2015 were as follows:



(in thousands, except per share data)	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
2016
Total revenues	$	424,173	$	446,518	$	462,274	$	433,664
Total expenses	$	321,624	$	337,441	$	345,302	$	338,763
Income before income taxes	$	102,549	$	109,077	$	116,972	$	94,901
Net income	$	62,070	$	66,250	$	71,545	$	57,626
Net income per share:
Basic	$	0.45	$	0.47	$	0.51	$	0.41
Diluted	$	0.44	$	0.47	$	0.50	$	0.41
2015
Total revenues	$	404,298	$	419,447	$	432,167	$	404,597
Total expenses	$	310,520	$	318,533	$	319,337	$	309,560
Income before income taxes	$	93,778	$	100,914	$	112,830	$	95,037
Net income	$	56,951	$	61,005	$	67,427	$	57,935
Net income per share:
Basic	$	0.40	$	0.43	$	0.48	$	0.41
Diluted	$	0.39	$	0.43	$	0.47	$	0.41

Quarterly financial results are affected by seasonal variations. The timing of the Company’s receipt of profit-sharing contingent commissions, policy renewals and acquisitions may cause revenues, expenses and net income to vary significantly between quarters.

Segment Information

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Segment Information

Brown & Brown’s business is divided into four reportable segments: (1) the Retail Segment, which provides a broad range of insurance products and services to commercial, public and quasi-public entities, and to professional and individual customers; (2) the National Programs Segment, which acts as a MGA, provides professional liability and related package products for certain professionals, a range of insurance products for individuals, flood coverage, and targeted products and services designated for specific industries, trade groups, governmental entities and market niches, all of which are delivered through nationwide networks of independent agents, and Brown & Brown retail agents; (3) the Wholesale Brokerage Segment, which markets and sells excess and surplus commercial and personal lines insurance, primarily through independent agents and brokers, as well as Brown & Brown retail agents; and (4) the Services Segment, which provides insurance-related services, including third-party claims administration and comprehensive medical utilization management services in both the workers’ compensation and all-lines liability arenas, as well as Medicare Set-aside services, Social Security disability and Medicare benefits advocacy services and claims adjusting services.

Brown & Brown conducts all of its operations within the United States of America, except for a wholesale brokerage operation based in London, England, and retail operations in Bermuda and the Cayman Islands. These operations earned $14.5 million, $13.4 million and $13.3 million of total revenues for the years ended December 31, 2016, 2015 and 2014, respectively. Long-lived assets held outside of the United States during each of these three years were not material.

The accounting policies of the reportable segments are the same as those described in Note 1. The Company evaluates the performance of its segments based upon revenues and income before income taxes. Inter-segment revenues are eliminated.

Summarized financial information concerning the Company’s reportable segments is shown in the following table. The “Other” column includes any income and expenses not allocated to reportable segments and corporate-related items, including the intercompany interest expense charge to the reporting segment.

Segment results for prior periods have been recast to reflect the current year segmental structure. Certain reclassifications

have been made to the prior year amounts reported in this Annual Report on Form 10-K in order to conform to the current year

presentation.



	For the year ended December 31, 2016
(in thousands)	Retail		National Programs		Wholesale Brokerage		Services		Other			Total
Total revenues	$	917,406	$	448,516	$	243,103	$	156,365	$	1,239		$	1,766,629
Investment income	$	37	$	628	$	4	$	283	$	504		$	1,456
Amortization	$	43,447	$	27,920	$	10,801	$	4,485	$	10		$	86,663
Depreciation	$	6,191	$	7,868	$	1,975	$	1,881	$	3,088		$	21,003
Interest expense	$	38,216	$	45,738	$	3,976	$	4,950	$	(53,399	)	$	39,481
Income before income taxes	$	188,001	$	91,762	$	62,623	$	24,338	$	56,775		$	423,499
Total assets	$	3,854,393	$	2,711,378	$	1,108,829	$	371,645	$	(2,758,902	)	$	5,287,343
Capital expenditures	$	5,951	$	6,977	$	1,301	$	656	$	2,880		$	17,765



	For the year ended December 31, 2015
(in thousands)	Retail		National Programs		Wholesale Brokerage		Services		Other			Total
Total revenues	$	870,346	$	428,734	$	216,996	$	145,365	$	(932	)	$	1,660,509
Investment income	$	87	$	210	$	150	$	42	$	515		$	1,004
Amortization	$	45,145	$	28,479	$	9,739	$	4,019	$	39		$	87,421
Depreciation	$	6,558	$	7,250	$	2,142	$	1,988	$	2,952		$	20,890
Interest expense	$	41,036	$	55,705	$	891	$	5,970	$	(64,354	)	$	39,248
Income before income taxes	$	181,938	$	67,673	$	64,708	$	19,713	$	68,527		$	402,559
Total assets	$	3,507,476	$	2,505,752	$	895,782	$	285,459	$	(2,189,990	)	$	5,004,479
Capital expenditures	$	6,797	$	6,001	$	3,084	$	1,088	$	1,405		$	18,375



	For the year ended December 31, 2014
(in thousands)	Retail		National Programs		Wholesale Brokerage		Services		Other			Total
Total revenues	$	823,686	$	404,239	$	211,911	$	136,558	$	(598	)	$	1,575,796
Investment income	$	67	$	164	$	26	$	3	$	487		$	747
Amortization	$	42,935	$	25,129	$	10,703	$	4,135	$	39		$	82,941
Depreciation	$	6,449	$	7,805	$	2,470	$	2,213	$	1,958		$	20,895
Interest expense	$	43,502	$	49,663	$	1,294	$	7,678	$	(73,729	)	$	28,408
Income before income taxes	$	157,491	$	73,178	$	8,276	$	17,870	$	82,934		$	339,749
Total assets	$	3,229,484	$	2,455,749	$	857,804	$	296,034	$	(1,892,511	)	$	4,946,560
Capital expenditures	$	6,873	$	14,133	$	1,526	$	1,210	$	1,181		$	24,923

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8981-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8971-108599

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8595-108599

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8380-108599

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8933-108599

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 26
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8844-108599

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 35
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8984-108599

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 40
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9031-108599

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9054-108599

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8538-108599

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 29
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8864-108599

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8924-108599

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599

+ Details

Losses and Loss Adjustment Reserve

12 Months Ended

Dec. 31, 2016

Reinsurance Disclosures [Abstract]

Losses and Loss Adjustment Reserve

Although the reinsurers are liable to the Company for amounts reinsured, our subsidiary, WNFIC remains primarily liable to its policyholders for the full amount of the policies written whether or not the reinsurers meet their obligations to the Company when they become due. The effects of reinsurance on premiums written and earned at December 31 are as follows:



	2016				2015
(in thousands)	Written		Earned		Written		Earned
Direct premiums	$	591,142	$	592,123	$	599,828	$	610,753
Assumed premiums	—		—		—		18
Ceded premiums	591,124		592,105		599,807		610,750
Net premiums	$	18	$	18	$	21	$	21

All premiums written by WNFIC under the National Flood Insurance Program are 100% ceded to FEMA, for which WNFIC received a 30.9% expense allowance from January 1, 2016 through December 31, 2016. As of December 31, 2016 and 2015, the Company ceded $589.5 million and $598.4 million of written premiums, respectively.

Effective April 1, 2014, WNFIC is also a party to a quota share agreement whereby it cedes 100% of its gross excess flood premiums, excluding fees, to Arch Reinsurance Company and receives a 30.5% commission. WNFIC ceded $1.6 million and $1.4 million for the years ended December 31, 2016 and 2015. No loss data exists on this agreement.

WNFIC also ceded 100%, of the Homeowners, Private Passenger Auto Liability, and Other Liability Occurrence to Stillwater Insurance Company, formerly known as Fidelity National Insurance Company. This business is in runoff. Therefore, only loss data still exists on this business. As of December 31, 2016, ceded unpaid losses and loss adjustment expenses for Homeowners, Private Passenger Auto Liability and Other Liability Occurrence was $5,262, $0 and $95, respectively. There was no incurred but not reported balance for Homeowners, Private Passenger Auto Liability and Other Liability Occurrence.

As of December 31, 2016 the Consolidated Balance Sheet contained Reinsurance recoverable of $78.1 million and Prepaid reinsurance premiums of $308.7 million. As of December 31, 2015 the Consolidated Balance Sheet contained reinsurance recoverable of $32.0 million and prepaid reinsurance premiums of $309.6 million. There was no net activity in the reserve for losses and loss adjustment expense for the years ended December 31, 2016 and 2015, as WNFIC’s direct premiums written were 100% ceded to two reinsurers. The balance of the reserve for losses and loss adjustment expense, excluding related reinsurance recoverable was $78.1 million as of December 31, 2016 and $32.0 million as of December 31, 2015.

Shareholders' Equity	12 Months Ended
Shareholders' Equity	Dec. 31, 2016
Equity [Abstract]
Shareholders' Equity	Shareholders’ Equity On July 18, 2014, the Company’s Board of Directors authorized the repurchase of up to $200.0 million of its shares of common stock. This was in addition to the $25.0 million that was authorized in the first quarter and executed in the second quarter of 2014. On September 2, 2014, the Company entered into an accelerated share repurchase agreement (“ASR”) with an investment bank to purchase an aggregate $50.0 million of the Company’s common stock. The total number of shares purchased under the ASR of 1,539,760 was determined upon settlement of the final delivery and was based upon the Company’s volume weighted-average price per its common share over the ASR period less a discount. On March 5, 2015, the Company entered into an ASR with an investment bank to purchase an aggregate $100.0 million of the Company’s common stock. As part of the ASR, the Company received an initial delivery of 2,667,992 shares of the Company’s common stock with a fair market value of approximately $85.0 million. On August 6, 2015, the Company was notified by its investment bank that the March 5, 2015 ASR agreement between the Company and the investment bank had been completed in accordance with the terms of the agreement. The investment bank delivered to the Company an additional 391,637 shares of the Company’s common stock for a total of 3,059,629 shares repurchased under the agreement. The delivery of the remaining 391,637 shares occurred on August 11, 2015. At the conclusion of this contract the Company had authorization for $50.0 million of share repurchases under the original Board authorization. On July 20, 2015, the Company’s Board of Directors authorized the repurchase of up to an additional $400.0 million of the Company’s outstanding common stock. With this authorization, the Company had total available approval to repurchase up to $450.0 million, in the aggregate, of the Company’s outstanding common stock. On November 11, 2015, the Company entered into a third ASR with an investment bank to purchase an aggregate $75.0 million of the Company’s common stock. The Company received an initial delivery of 1,985,981 shares of the Company’s common stock with a fair market value of approximately $63.8 million. On January 6, 2016 this agreement was completed by the investment bank with the delivery of 363,209 shares of the Company’s common stock. After completion of this third ASR, the Company has approval to repurchase up to $375.0 million, in the aggregate, of the Company’s outstanding common stock. Between October 25, 2016 and November 4, 2016, the Company made share repurchases in the open market in total of 209,618 shares at a total cost of $7.7 million. After completing these open market share repurchases, the Company’s outstanding Board approved share repurchase authorization is $367.3 million. Under the authorization from the Company’s Board of Directors, shares may be purchased from time to time, at the Company’s discretion and subject to the availability of stock, market conditions, the trading price of the stock, alternative uses for capital, the Company’s financial performance and other potential factors. These purchases may be carried out through open market purchases, block trades, accelerated share repurchase plans of up to $100.0 million each (unless otherwise approved by the Board of Directors), negotiated private transactions or pursuant to any trading plan that may be adopted in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 4.E)
-URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(e))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(31))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 4.C)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(30))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(d))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Preferred Stock
-URI http://asc.fasb.org/extlink&oid=6521494

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644

+ Details

Legal and Regulatory Proceedings

12 Months Ended

Dec. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Legal and Regulatory Proceedings

Operating Leases

Brown & Brown leases facilities and certain items of office equipment under non-cancelable operating lease arrangements expiring on various dates through 2042. The facility leases generally contain renewal options and escalation clauses based upon increases in the lessors’ operating expenses and other charges. Brown & Brown anticipates that most of these leases will be renewed or replaced upon expiration. At December 31, 2016, the aggregate future minimum lease payments under all non-cancelable lease agreements were as follows:



(in thousands)
2017	$	42,727
2018	39,505
2019	34,277
2020	29,393
2021	22,222
Thereafter	45,036
Total minimum future lease payments	$	213,160

Rental expense in 2016, 2015 and 2014 for operating leases totaled $49.3 million, $46.0 million, and $49.0 million, respectively.

Legal Proceedings

The Company records losses for claims in excess of the limits of, or outside the coverage of, applicable insurance at the time and to the extent they are probable and estimable. In accordance with ASC Topic 450-Contingencies, the Company accrues anticipated costs of settlement, damages, losses for liability claims and, under certain conditions, costs of defense, based upon historical experience or to the extent specific losses are probable and estimable. Otherwise, the Company expenses these costs as incurred. If the best estimate of a probable loss is a range rather than a specific amount, the Company accrues the amount at the lower end of the range.

The Company’s accruals for legal matters that were probable and estimable were not material at December 31, 2016 and 2015. We continue to assess certain litigation and claims to determine the amounts, if any, that management believes will be paid as a result of such claims and litigation and, therefore, additional losses may be accrued and paid in the future, which could adversely impact the Company’s operating results, cash flows and overall liquidity. The Company maintains third-party insurance policies to provide coverage for certain legal claims, in an effort to mitigate its overall exposure to unanticipated claims or adverse decisions. However, as (i) one or more of the Company’s insurance carriers could take the position that portions of these claims are not covered by the Company’s insurance, (ii) to the extent that payments are made to resolve claims and lawsuits, applicable insurance policy limits are eroded and (iii) the claims and lawsuits relating to these matters are continuing to develop, it is possible that future results of operations or cash flows for any particular quarterly or annual period could be materially affected by unfavorable resolutions of these matters. Based upon the AM Best Company ratings of these third-party insurers, management does not believe there is a substantial risk of an insurer’s material non-performance related to any current insured claims.

On the basis of current information, the availability of insurance and legal advice, in management’s opinion, the Company is not currently involved in any legal proceedings which, individually or in the aggregate, would have a material adverse effect on its financial condition, operations and/or cash flows.

Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Average Annual Operating Profit Earned Period Maximum	3 years
Fair Value of Financial Instruments, Policy [Policy Text Block]	Fair Value of Financial Instruments The carrying amounts of Brown & Brown’s financial assets and liabilities, including cash and cash equivalents; restricted cash and short-term investments; investments; premiums, commissions and fees receivable; reinsurance recoverable; prepaid reinsurance premiums; premiums payable to insurance companies; losses and loss adjustment reserve; unearned premium; premium deposits and credits due customers and accounts payable, at December 31, 2016 and 2015, approximate fair value because of the short-term maturity of these instruments. The carrying amount of Brown & Brown’s long-term debt approximates fair value at December 31, 2016 and 2015 as our fixed-rate borrowings of $598.8 million approximate their values using market quotes of notes with the similar terms as ours, which we deem a close approximation of current market rates. The estimated fair value of the $481.3 million remaining on the term loan under our Credit Facility (as defined below) approximates the carrying value due to the variable interest rate based upon adjusted LIBOR. See Note 2 to our Consolidated Financial Statements for the fair values related to the establishment of intangible assets and the establishment and adjustment of earn-out payables. See Note 5 for information on the fair value of investments and Note 8 for information on the fair value of long-term debt.
Nature of Operations	Summary of Significant Accounting Policies Nature of Operations Brown & Brown, Inc., a Florida corporation, and its subsidiaries (collectively, “Brown & Brown” or the “Company”) is a diversified insurance agency, wholesale brokerage, insurance programs and services organization that markets and sells to its customers, insurance products and services, primarily in the property and casualty area. Brown & Brown’s business is divided into four reportable segments: the Retail Segment provides a broad range of insurance products and services to commercial, public entity, professional and individual customers; the National Programs Segment, acting as a managing general agent (“MGA”), provides professional liability and related package products for certain professionals, a range of insurance products for individuals, flood coverage, and targeted products and services designated for specific industries, trade groups, governmental entities and market niches, all of which are delivered through nationwide networks of independent agents, and Brown & Brown retail agents; the Wholesale Brokerage Segment markets and sells excess and surplus commercial insurance, primarily through independent agents and brokers, as well as Brown & Brown Retail offices; and the Services Segment provides insurance-related services, including third-party claims administration and comprehensive medical utilization management services in both the workers’ compensation and all-lines liability arenas, as well as Medicare Set-aside services, Social Security disability and Medicare benefits advocacy services, and claims adjusting services. Recently Issued Accounting Pronouncements In November 2016, the Financial Accountings Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-18, “Statement of Cash Flows (Topic 230)”: Restricted Cash (“ASU 2016-18”), which requires that the Statement of Cash Flows explain the changes during the period of cash and cash equivalents inclusive of amounts categorized as Restricted Cash. As such, upon adoption, the Company’s Statement of Cash Flows will show the sources and uses of cash that explain the movement in the balance of cash and cash equivalents, inclusive of restricted cash, over the period presented. ASU 2016-18 is effective for periods beginning after December 15, 2017. In August 2016, the FASB issued ASU 2016-15, "Statement of Cash Flows (Topic 230)": Classification of Certain Cash Receipts and Cash Payments (a consensus of the Emerging Issues Task Force) ("ASU 2016-15"), which addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice in how certain cash receipts and cash payments are presented and classified and applies to all entities, including both business entities and not-for-profit entities that are required to present a statement of cash flows under Topic 230. ASU 2016-15 will take effect for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017 and early adoption is permitted. The Company has evaluated the impact of ASU 2016-15 and has determined the impact to be immaterial. The Company already presents cash paid on contingent consideration in business combination as prescribed by ASU 2016-15 and does not, at this time, engage in the other activities being addressed. In March 2016, the FASB issued ASU 2016-09, "Improvements to Employee Share Based Payment Accounting" ("ASU 2016-09"), which amends guidance issued in Accounting Standards Codification ("ASC") Topic 718, Compensation - Stock Compensation. ASU 2016-09 simplifies several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. ASU 2016-09 is effective for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years and early adoption is permitted. The Company has evaluated the impact of adoption of the ASU on its Consolidated Financial Statements. The principal impact will be that the tax benefit or expense from stock compensation will be presented in the income tax line of the Statement of Income rather than the current presentation as a component of equity on the Balance Sheet. Also the tax benefit or expense will be presented as activity in Cash Flow from Operating Activity rather than the current presentation as Cash Flow from Financing Activity in the Statement of Cash Flows. The Company will also continue to estimate forfeitures of stock grants as allowed by ASU 2016-09. In March 2016, the FASB issued ASU 2016-08, "Principal Versus Agent Considerations (Reporting Revenue Gross Versus Net)" ("ASU 2016-08") to clarify certain aspects of the principal-versus-agent guidance included in the new revenue standard ASU 2014-09 "Revenue from Contracts with Customers" ("ASU 2014-09"). The FASB issued the ASU in response to concerns identified by stakeholders, including those related to (1) determining the appropriate unit of account under the revenue standard’s principal-versus-agent guidance and (2) applying the indicators of whether an entity is a principal or an agent in accordance with the revenue standard’s control principle. ASU 2016-08 is effective contemporaneous with ASU 2014-09 beginning January 1, 2018. The impact of ASU 2016-08 is currently being evaluated along with ASU 2014-09. At this point in our evaluation the potential impact would be limited to the claims administering activities within our Services Segment and therefore not material to the Company. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842)” (“ASU 2016-02”), which provides guidance for accounting for leases. Under ASU 2016-02, the Company will be required to recognize the assets and liabilities for the rights and obligations created by leased assets. ASU 2016-02 will take effect for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company continues to evaluate the impact of this pronouncement with the principal impact being that the present value of the remaining lease payments be presented as a liability on the Balance Sheet as well as an asset of similar value representing the “Right of Use” for those leased properties. As detailed in Note 13, the undiscounted contractual cash payments remaining on leased properties is $213 million as of December 31, 2016. In November 2015, FASB issued ASU No. 2015-17, “Income Taxes (Topic 740) - Balance Sheet Classification of Deferred Taxes” (“ASU 2015-17”), which simplifies the presentation of deferred income taxes by requiring deferred tax assets and liabilities be classified as a single non-current item on the balance sheet. ASU 2015-17 is effective for fiscal years beginning after December 15, 2016 with early adoption permitted as of the beginning of any interim or annual reporting period. The Company plans to adopt ASU 2015-17 in the first quarter of 2017. This is not expected to have a material impact on our Consolidated Financial Statements other than reclassifying current deferred tax assets and liabilities to non-current in the balance sheet. In May 2014, FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers” (“ASU 2014-09”), which provides guidance for revenue recognition. ASU 2014-09 affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of non-financial assets, and supersedes the revenue recognition requirements in Topic 605, “Revenue Recognition,” and most industry-specific guidance. The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which a company expects to be entitled in exchange for those goods or services. In doing so, companies will need to use more judgment and make more estimates than under the current guidance. Specifically in situations where multiple performance obligations exist within the contract, the use of estimates is required to allocate the transaction price to each separate performance obligation. Historically 70% or more of the Company’s revenue is in the form of commissions paid by insurance carriers. Commission are earned upon the effective date of bound coverage and no significant performance obligation remains in those arrangements after coverage is bound. The Company is currently evaluating the approximately 30% of revenue earned in the form of fees against the requirements of this pronouncement. Fees are predominantly in our National Programs and Services Segments, and to a lesser extent in the large accounts business within our Retail Segment. At the conclusion of this evaluation it may be determined that fee revenue from certain agreements will be recognized in earlier periods under the new guidance in comparison to our current accounting policies and others will be recognized in later periods. Based upon the work completed to date, management does not expect the overall impact to be significant. ASU 2014-09 is effective for the Company beginning January 1, 2018, after FASB voted to delay the effective date by one year. At that time, the Company may adopt the new standard under the full retrospective approach or the modified retrospective approach. We do not anticipate a material change in our internal control framework necessitated by the adoption of ASU 2014-09. Principles of Consolidation The accompanying Consolidated Financial Statements include the accounts of Brown & Brown, Inc. and its subsidiaries. All significant intercompany account balances and transactions have been eliminated in the Consolidated Financial Statements. Segment results for prior periods have been recast to reflect the current year segmental structure. Certain reclassifications have been made to the prior year amounts reported in this Annual Report on Form 10-K in order to conform to the current year presentation. Revenue Recognition Commission revenues are recognized as of the effective date of the insurance policy or the date on which the policy premium is processed into our systems and invoiced to the customer, whichever is later. Commission revenues related to installment billings are recognized on the latter of effective or invoiced date, with the exception of our Arrowhead business which follows a policy of recognizing on the latter of effective or processed date into our systems, regardless of the billing arrangement. Management determines the policy cancellation reserve based upon historical cancellation experience adjusted for any known circumstances. Subsequent commission adjustments are recognized upon our receipt of notification from insurance companies concerning matters necessitating such adjustments. Profit-sharing contingent commissions are recognized when determinable, which is generally when such commissions are received from insurance companies, or when we receive formal notification of the amount of such payments. Fee revenues and commissions for workers’ compensation programs are recognized as services are rendered. Use of Estimates The preparation of the Consolidated Financial Statements in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, as well as disclosures of contingent assets and liabilities, at the date of the Consolidated Financial Statements, and the reported amounts of revenues and expenses during the reporting period. Actual results may differ from those estimates. Cash and Cash Equivalents Cash and cash equivalents principally consist of demand deposits with financial institutions and highly liquid investments with quoted market prices having maturities of three months or less when purchased. Restricted Cash and Investments, and Premiums, Commissions and Fees Receivable In our capacity as an insurance agent or broker, the Company typically collects premiums from insureds and, after deducting its authorized commissions, remits the net premiums to the appropriate insurance company or companies. Accordingly, as reported in the Consolidated Balance Sheets, “premiums” are receivable from insureds. Unremitted net insurance premiums are held in a fiduciary capacity until Brown & Brown disburses them. Where allowed by law, Brown & Brown invests these unremitted funds only in cash, money market accounts, tax-free variable-rate demand bonds and commercial paper held for a short term. In certain states in which Brown & Brown operates, the use and investment alternatives for these funds are regulated and restricted by various state laws and agencies. These restricted funds are reported as restricted cash and investments on the Consolidated Balance Sheets. The interest income earned on these unremitted funds, where allowed by state law, is reported as investment income in the Consolidated Statement of Income. In other circumstances, the insurance companies collect the premiums directly from the insureds and remit the applicable commissions to Brown & Brown. Accordingly, as reported in the Consolidated Balance Sheets, “commissions” are receivables from insurance companies. “Fees” are primarily receivables due from customers. Investments Certificates of deposit, and other securities, having maturities of more than three months when purchased are reported at cost and are adjusted for other-than-temporary market value declines. The Company’s investment holdings include U.S. Government securities, municipal bonds, domestic corporate and foreign corporate bonds as well as short-duration fixed income funds. Investments within the portfolio or funds are held as available for sale and are carried at their fair value. Any gain/loss applicable from the fair value change is recorded, net of tax, as other comprehensive income within the equity section of the Consolidated Balance Sheet. Realized gains and losses are reported on the Consolidated Statement of Income, with the cost of securities sold determined on a specific identification basis. Fixed Assets Fixed assets, including leasehold improvements, are carried at cost, less accumulated depreciation and amortization. Expenditures for improvements are capitalized, and expenditures for maintenance and repairs are expensed to operations as incurred. Upon sale or retirement, the cost and related accumulated depreciation and amortization are removed from the accounts and the resulting gain or loss, if any, is reflected in other income. Depreciation has been determined using the straight-line method over the estimated useful lives of the related assets, which range from three to 15 years. Leasehold improvements are amortized on the straight-line method over the shorter of the useful life of the improvement or the term of the related lease. Goodwill and Amortizable Intangible Assets All of our business combinations initiated after June 30, 2001 are accounted for using the aquisition method. Acquisition purchase prices are typically based upon a multiple of average annual operating profit earned over a three-year period within a minimum and maximum price range. The recorded purchase prices for all acquisitions consummated after January 1, 2009 include an estimation of the fair value of liabilities associated with any potential earn-out provisions. Subsequent changes in the fair value of earn-out obligations are recorded in the Consolidated Statement of Income when incurred. The fair value of earn-out obligations is based upon the present value of the expected future payments to be made to the sellers of the acquired businesses in accordance with the provisions contained in the respective purchase agreements. In determining fair value, the acquired business’ future performance is estimated using financial projections developed by management for the acquired business and this estimate reflects market participant assumptions regarding revenue growth and/or profitability. The expected future payments are estimated on the basis of the earn-out formula and performance targets specified in each purchase agreement compared to the associated financial projections. These estimates are then discounted to present value using a risk-adjusted rate that takes into consideration the likelihood that the forecasted earn-out payments will be made. Amortizable intangible assets are stated at cost, less accumulated amortization, and consist of purchased customer accounts and non-compete agreements. Purchased customer accounts and non-compete agreements are amortized on a straight-line basis over the related estimated lives and contract periods, which range from 3 to 15 years. Purchased customer accounts primarily consist of records and files that contain information about insurance policies and the related insured parties that are essential to policy renewals. The excess of the purchase price of an acquisition over the fair value of the identifiable tangible and amortizable intangible assets is assigned to goodwill. While goodwill is not amortizable, it is subject to assessment at least annually, and more frequently in the presence of certain circumstances, for impairment by application of a fair value-based test. The Company compares the fair value of each reporting unit with its carrying amount to determine if there is potential impairment of goodwill. If the fair value of the reporting unit is less than its carrying value, an impairment loss is recorded to the extent that the fair value of the goodwill within the reporting unit is less than its carrying value. Fair value is estimated based upon multiples of earnings before interest, income taxes, depreciation, amortization and change in estimated acquisition earn-out payables (“EBITDAC”), or on a discounted cash flow basis. Brown & Brown completed its most recent annual assessment as of November 30, 2016 and determined that the fair value of goodwill exceeded the carrying value of such assets. In addition, as of December 31, 2016, there are no accumulated impairment losses. The carrying value of amortizable intangible assets attributable to each business or asset group comprising Brown & Brown is periodically reviewed by management to determine if there are events or changes in circumstances that would indicate that its carrying amount may not be recoverable. Accordingly, if there are any such changes in circumstances during the year, Brown & Brown assesses the carrying value of its amortizable intangible assets by considering the estimated future undiscounted cash flows generated by the corresponding business or asset group. Any impairment identified through this assessment may require that the carrying value of related amortizable intangible assets be adjusted. There were no impairments recorded for the years ended December 31, 2016, 2015 and 2014. Income Taxes Brown & Brown records income tax expense using the asset-and-liability method of accounting for deferred income taxes. Under this method, deferred tax assets and liabilities are recognized for the expected future tax consequences of temporary differences between the financial statement carrying values and the income tax bases of Brown & Brown’s assets and liabilities. Brown & Brown files a consolidated federal income tax return and has elected to file consolidated returns in certain states. Deferred income taxes are provided for in the Consolidated Financial Statements and relate principally to expenses charged to income for financial reporting purposes in one period and deducted for income tax purposes in other periods.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In November 2016, the Financial Accountings Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-18, “Statement of Cash Flows (Topic 230)”: Restricted Cash (“ASU 2016-18”), which requires that the Statement of Cash Flows explain the changes during the period of cash and cash equivalents inclusive of amounts categorized as Restricted Cash. As such, upon adoption, the Company’s Statement of Cash Flows will show the sources and uses of cash that explain the movement in the balance of cash and cash equivalents, inclusive of restricted cash, over the period presented. ASU 2016-18 is effective for periods beginning after December 15, 2017. In August 2016, the FASB issued ASU 2016-15, "Statement of Cash Flows (Topic 230)": Classification of Certain Cash Receipts and Cash Payments (a consensus of the Emerging Issues Task Force) ("ASU 2016-15"), which addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice in how certain cash receipts and cash payments are presented and classified and applies to all entities, including both business entities and not-for-profit entities that are required to present a statement of cash flows under Topic 230. ASU 2016-15 will take effect for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017 and early adoption is permitted. The Company has evaluated the impact of ASU 2016-15 and has determined the impact to be immaterial. The Company already presents cash paid on contingent consideration in business combination as prescribed by ASU 2016-15 and does not, at this time, engage in the other activities being addressed. In March 2016, the FASB issued ASU 2016-09, "Improvements to Employee Share Based Payment Accounting" ("ASU 2016-09"), which amends guidance issued in Accounting Standards Codification ("ASC") Topic 718, Compensation - Stock Compensation. ASU 2016-09 simplifies several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. ASU 2016-09 is effective for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years and early adoption is permitted. The Company has evaluated the impact of adoption of the ASU on its Consolidated Financial Statements. The principal impact will be that the tax benefit or expense from stock compensation will be presented in the income tax line of the Statement of Income rather than the current presentation as a component of equity on the Balance Sheet. Also the tax benefit or expense will be presented as activity in Cash Flow from Operating Activity rather than the current presentation as Cash Flow from Financing Activity in the Statement of Cash Flows. The Company will also continue to estimate forfeitures of stock grants as allowed by ASU 2016-09. In March 2016, the FASB issued ASU 2016-08, "Principal Versus Agent Considerations (Reporting Revenue Gross Versus Net)" ("ASU 2016-08") to clarify certain aspects of the principal-versus-agent guidance included in the new revenue standard ASU 2014-09 "Revenue from Contracts with Customers" ("ASU 2014-09"). The FASB issued the ASU in response to concerns identified by stakeholders, including those related to (1) determining the appropriate unit of account under the revenue standard’s principal-versus-agent guidance and (2) applying the indicators of whether an entity is a principal or an agent in accordance with the revenue standard’s control principle. ASU 2016-08 is effective contemporaneous with ASU 2014-09 beginning January 1, 2018. The impact of ASU 2016-08 is currently being evaluated along with ASU 2014-09. At this point in our evaluation the potential impact would be limited to the claims administering activities within our Services Segment and therefore not material to the Company. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842)” (“ASU 2016-02”), which provides guidance for accounting for leases. Under ASU 2016-02, the Company will be required to recognize the assets and liabilities for the rights and obligations created by leased assets. ASU 2016-02 will take effect for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company continues to evaluate the impact of this pronouncement with the principal impact being that the present value of the remaining lease payments be presented as a liability on the Balance Sheet as well as an asset of similar value representing the “Right of Use” for those leased properties. As detailed in Note 13, the undiscounted contractual cash payments remaining on leased properties is $213 million as of December 31, 2016. In November 2015, FASB issued ASU No. 2015-17, “Income Taxes (Topic 740) - Balance Sheet Classification of Deferred Taxes” (“ASU 2015-17”), which simplifies the presentation of deferred income taxes by requiring deferred tax assets and liabilities be classified as a single non-current item on the balance sheet. ASU 2015-17 is effective for fiscal years beginning after December 15, 2016 with early adoption permitted as of the beginning of any interim or annual reporting period. The Company plans to adopt ASU 2015-17 in the first quarter of 2017. This is not expected to have a material impact on our Consolidated Financial Statements other than reclassifying current deferred tax assets and liabilities to non-current in the balance sheet. In May 2014, FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers” (“ASU 2014-09”), which provides guidance for revenue recognition. ASU 2014-09 affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of non-financial assets, and supersedes the revenue recognition requirements in Topic 605, “Revenue Recognition,” and most industry-specific guidance. The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which a company expects to be entitled in exchange for those goods or services. In doing so, companies will need to use more judgment and make more estimates than under the current guidance. Specifically in situations where multiple performance obligations exist within the contract, the use of estimates is required to allocate the transaction price to each separate performance obligation. Historically 70% or more of the Company’s revenue is in the form of commissions paid by insurance carriers. Commission are earned upon the effective date of bound coverage and no significant performance obligation remains in those arrangements after coverage is bound. The Company is currently evaluating the approximately 30% of revenue earned in the form of fees against the requirements of this pronouncement. Fees are predominantly in our National Programs and Services Segments, and to a lesser extent in the large accounts business within our Retail Segment. At the conclusion of this evaluation it may be determined that fee revenue from certain agreements will be recognized in earlier periods under the new guidance in comparison to our current accounting policies and others will be recognized in later periods. Based upon the work completed to date, management does not expect the overall impact to be significant. ASU 2014-09 is effective for the Company beginning January 1, 2018, after FASB voted to delay the effective date by one year. At that time, the Company may adopt the new standard under the full retrospective approach or the modified retrospective approach. We do not anticipate a material change in our internal control framework necessitated by the adoption of ASU 2014-09.
Consolidation, Policy [Policy Text Block]	Principles of Consolidation The accompanying Consolidated Financial Statements include the accounts of Brown & Brown, Inc. and its subsidiaries. All significant intercompany account balances and transactions have been eliminated in the Consolidated Financial Statements. Segment results for prior periods have been recast to reflect the current year segmental structure. Certain reclassifications have been made to the prior year amounts reported in this Annual Report on Form 10-K in order to conform to the current year presentation.
Revenue Recognition, Policy [Policy Text Block]	Revenue Recognition Commission revenues are recognized as of the effective date of the insurance policy or the date on which the policy premium is processed into our systems and invoiced to the customer, whichever is later. Commission revenues related to installment billings are recognized on the latter of effective or invoiced date, with the exception of our Arrowhead business which follows a policy of recognizing on the latter of effective or processed date into our systems, regardless of the billing arrangement. Management determines the policy cancellation reserve based upon historical cancellation experience adjusted for any known circumstances. Subsequent commission adjustments are recognized upon our receipt of notification from insurance companies concerning matters necessitating such adjustments. Profit-sharing contingent commissions are recognized when determinable, which is generally when such commissions are received from insurance companies, or when we receive formal notification of the amount of such payments. Fee revenues and commissions for workers’ compensation programs are recognized as services are rendered.
Use of Estimates, Policy [Policy Text Block]	Use of Estimates The preparation of the Consolidated Financial Statements in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, as well as disclosures of contingent assets and liabilities, at the date of the Consolidated Financial Statements, and the reported amounts of revenues and expenses during the reporting period. Actual results may differ from those estimates
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash and Cash Equivalents Cash and cash equivalents principally consist of demand deposits with financial institutions and highly liquid investments with quoted market prices having maturities of three months or less when purchased.
Restricted Cash and Investments Premiums Commissions and Fees Receivable Policy [Text Block]	Restricted Cash and Investments, and Premiums, Commissions and Fees Receivable In our capacity as an insurance agent or broker, the Company typically collects premiums from insureds and, after deducting its authorized commissions, remits the net premiums to the appropriate insurance company or companies. Accordingly, as reported in the Consolidated Balance Sheets, “premiums” are receivable from insureds. Unremitted net insurance premiums are held in a fiduciary capacity until Brown & Brown disburses them. Where allowed by law, Brown & Brown invests these unremitted funds only in cash, money market accounts, tax-free variable-rate demand bonds and commercial paper held for a short term. In certain states in which Brown & Brown operates, the use and investment alternatives for these funds are regulated and restricted by various state laws and agencies. These restricted funds are reported as restricted cash and investments on the Consolidated Balance Sheets. The interest income earned on these unremitted funds, where allowed by state law, is reported as investment income in the Consolidated Statement of Income. In other circumstances, the insurance companies collect the premiums directly from the insureds and remit the applicable commissions to Brown & Brown. Accordingly, as reported in the Consolidated Balance Sheets, “commissions” are receivables from insurance companies. “Fees” are primarily receivables due from customers.
Investment, Policy [Policy Text Block]	Investments Certificates of deposit, and other securities, having maturities of more than three months when purchased are reported at cost and are adjusted for other-than-temporary market value declines. The Company’s investment holdings include U.S. Government securities, municipal bonds, domestic corporate and foreign corporate bonds as well as short-duration fixed income funds. Investments within the portfolio or funds are held as available for sale and are carried at their fair value. Any gain/loss applicable from the fair value change is recorded, net of tax, as other comprehensive income within the equity section of the Consolidated Balance Sheet.
Property, Plant and Equipment, Policy [Policy Text Block]	Fixed Assets Fixed assets, including leasehold improvements, are carried at cost, less accumulated depreciation and amortization. Expenditures for improvements are capitalized, and expenditures for maintenance and repairs are expensed to operations as incurred. Upon sale or retirement, the cost and related accumulated depreciation and amortization are removed from the accounts and the resulting gain or loss, if any, is reflected in other income. Depreciation has been determined using the straight-line method over the estimated useful lives of the related assets, which range from three to 15 years. Leasehold improvements are amortized on the straight-line method over the shorter of the useful life of the improvement or the term of the related lease.
Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block]	Goodwill and Amortizable Intangible Assets All of our business combinations initiated after June 30, 2001 are accounted for using the aquisition method. Acquisition purchase prices are typically based upon a multiple of average annual operating profit earned over a three-year period within a minimum and maximum price range. The recorded purchase prices for all acquisitions consummated after January 1, 2009 include an estimation of the fair value of liabilities associated with any potential earn-out provisions. Subsequent changes in the fair value of earn-out obligations are recorded in the Consolidated Statement of Income when incurred. The fair value of earn-out obligations is based upon the present value of the expected future payments to be made to the sellers of the acquired businesses in accordance with the provisions contained in the respective purchase agreements. In determining fair value, the acquired business’ future performance is estimated using financial projections developed by management for the acquired business and this estimate reflects market participant assumptions regarding revenue growth and/or profitability. The expected future payments are estimated on the basis of the earn-out formula and performance targets specified in each purchase agreement compared to the associated financial projections. These estimates are then discounted to present value using a risk-adjusted rate that takes into consideration the likelihood that the forecasted earn-out payments will be made. Amortizable intangible assets are stated at cost, less accumulated amortization, and consist of purchased customer accounts and non-compete agreements. Purchased customer accounts and non-compete agreements are amortized on a straight-line basis over the related estimated lives and contract periods, which range from 3 to 15 years. Purchased customer accounts primarily consist of records and files that contain information about insurance policies and the related insured parties that are essential to policy renewals. The excess of the purchase price of an acquisition over the fair value of the identifiable tangible and amortizable intangible assets is assigned to goodwill. While goodwill is not amortizable, it is subject to assessment at least annually, and more frequently in the presence of certain circumstances, for impairment by application of a fair value-based test. The Company compares the fair value of each reporting unit with its carrying amount to determine if there is potential impairment of goodwill. If the fair value of the reporting unit is less than its carrying value, an impairment loss is recorded to the extent that the fair value of the goodwill within the reporting unit is less than its carrying value. Fair value is estimated based upon multiples of earnings before interest, income taxes, depreciation, amortization and change in estimated acquisition earn-out payables (“EBITDAC”), or on a discounted cash flow basis. Brown & Brown completed its most recent annual assessment as of November 30, 2016 and determined that the fair value of goodwill exceeded the carrying value of such assets. In addition, as of December 31, 2016, there are no accumulated impairment losses. The carrying value of amortizable intangible assets attributable to each business or asset group comprising Brown & Brown is periodically reviewed by management to determine if there are events or changes in circumstances that would indicate that its carrying amount may not be recoverable. Accordingly, if there are any such changes in circumstances during the year, Brown & Brown assesses the carrying value of its amortizable intangible assets by considering the estimated future undiscounted cash flows generated by the corresponding business or asset group. Any impairment identified through this assessment may require that the carrying value of related amortizable intangible assets be adjusted. There were no impairments recorded for the years ended December 31, 2016, 2015 and 2014.
Income Tax, Policy [Policy Text Block]	Income Taxes Brown & Brown records income tax expense using the asset-and-liability method of accounting for deferred income taxes. Under this method, deferred tax assets and liabilities are recognized for the expected future tax consequences of temporary differences between the financial statement carrying values and the income tax bases of Brown & Brown’s assets and liabilities. Brown & Brown files a consolidated federal income tax return and has elected to file consolidated returns in certain states. Deferred income taxes are provided for in the Consolidated Financial Statements and relate principally to expenses charged to income for financial reporting purposes in one period and deducted for income tax purposes in other periods.
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	Stock-Based Compensation The Company granted stock options and grants non-vested stock awards to its employees, officers and directors. The Company uses the modified-prospective method to account for share-based payments. Under the modified-prospective method, compensation cost is recognized for all share-based payments granted on or after January 1, 2006 and for all awards granted to employees prior to January 1, 2006 that remained unvested on that date. The Company uses the alternative-transition method to account for the income tax effects of payments made related to stock-based compensation. The Company uses the Black-Scholes valuation model for valuing all stock options and shares purchased under the Employee Stock Purchase Plan (the “ESPP”). Compensation for non-vested stock awards is measured at fair value on the grant date based upon the number of shares expected to vest. Compensation cost for all awards is recognized in earnings, net of estimated forfeitures, on a straight-line basis over the requisite service period
Reinsurance Accounting Policy [Policy Text Block]	Reinsurance The Company protects itself from claims-related losses by reinsuring all claims risk exposure. The only line of insurance the Company underwrites is flood insurance associated with the Wright National Flood Insurance Company (“WNFIC”), which is part of our National Programs Segment. However, all exposure is reinsured with the Federal Emergency Management Agency (“FEMA”) for basic admitted policies conforming to the National Flood Insurance Program. For excess flood insurance policies, all exposure is reinsured with a reinsurance carrier with an AM Best Company rating of “A” or better. Reinsurance does not legally discharge the ceding insurer from the primary liability for the full amount due under the reinsured policies. Reinsurance premiums, commissions, expense reimbursement and reserves related to ceded business are accounted for on a basis consistent with the accounting for the original policies issued and the terms of reinsurance contracts. Premiums earned and losses and loss adjustment expenses incurred are reported net of reinsurance amounts. Other underwriting expenses are shown net of earned ceding commission income. The liabilities for unpaid losses and loss adjustment expenses and unearned premiums are reported gross of ceded reinsurance recoverable. Balances due from reinsurers on unpaid losses and loss adjustment expenses, including an estimate of such recoverables related to reserves for incurred but not reported (“IBNR”) losses, are reported as assets and are included in reinsurance recoverable even though amounts due on unpaid loss and loss adjustment expense are not recoverable from the reinsurer until such losses are paid. The Company does not believe it is exposed to any material credit risk through its reinsurance as the reinsurer is FEMA for basic admitted flood policies and a national reinsurance carrier for excess flood policies, which has an AM Best Company rating of “A” or better. Historically, no amounts due from reinsurance carriers have been written off as uncollectible.
Unpaid Policy Claims and Claims Adjustment Expense, Policy [Policy Text Block]	Unpaid Losses and Loss Adjustment Reserve Unpaid losses and loss adjustment reserve include amounts determined on individual claims and other estimates based upon the past experience of WNFIC and the policyholders for IBNR claims, less anticipated salvage and subrogation recoverable. The methods of making such estimates and for establishing the resulting reserves are continually reviewed and updated, and any adjustments resulting therefrom are reflected in operations currently. WNFIC engages the services of outside actuarial consulting firms (the “Actuaries”) to assist on an annual basis to render an opinion on the sufficiency of the Company’s estimates for unpaid losses and related loss adjustment reserve. The Actuaries utilize both industry experience and the Company’s own experience to develop estimates of those amounts as of year-end. These estimated liabilities are subject to the impact of future changes in claim severity, frequency and other factors. In spite of the variability inherent in such estimates, management believes that the liabilities for unpaid losses and related loss adjustment reserve is adequate.
Insurance Premiums Revenue Recognition, Policy [Policy Text Block]	Premiums Premiums are recognized as income over the coverage period of the related policies. Unearned premiums represent the portion of premiums written that relate to the unexpired terms of the policies in force and are determined on a daily pro rata basis. The income is recorded to the commissions and fees line of the income statement.
Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	15 years

Nature of Operations (Policies)	12 Months Ended
Nature of Operations (Policies)	Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations	Brown & Brown, Inc., a Florida corporation, and its subsidiaries (collectively, “Brown & Brown” or the “Company”) is a diversified insurance agency, wholesale brokerage, insurance programs and services organization that markets and sells to its customers, insurance products and services, primarily in the property and casualty area. Brown & Brown’s business is divided into four reportable segments: the Retail Segment provides a broad range of insurance products and services to commercial, public entity, professional and individual customers; the National Programs Segment, acting as a managing general agent (“MGA”), provides professional liability and related package products for certain professionals, a range of insurance products for individuals, flood coverage, and targeted products and services designated for specific industries, trade groups, governmental entities and market niches, all of which are delivered through nationwide networks of independent agents, and Brown & Brown retail agents; the Wholesale Brokerage Segment markets and sells excess and surplus commercial insurance, primarily through independent agents and brokers, as well as Brown & Brown Retail offices; and the Services Segment provides insurance-related services, including third-party claims administration and comprehensive medical utilization management services in both the workers’ compensation and all-lines liability arenas, as well as Medicare Set-aside services, Social Security disability and Medicare benefits advocacy services, and claims adjusting services.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In November 2016, the Financial Accountings Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-18, “Statement of Cash Flows (Topic 230)”: Restricted Cash (“ASU 2016-18”), which requires that the Statement of Cash Flows explain the changes during the period of cash and cash equivalents inclusive of amounts categorized as Restricted Cash. As such, upon adoption, the Company’s Statement of Cash Flows will show the sources and uses of cash that explain the movement in the balance of cash and cash equivalents, inclusive of restricted cash, over the period presented. ASU 2016-18 is effective for periods beginning after December 15, 2017. In August 2016, the FASB issued ASU 2016-15, "Statement of Cash Flows (Topic 230)": Classification of Certain Cash Receipts and Cash Payments (a consensus of the Emerging Issues Task Force) ("ASU 2016-15"), which addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice in how certain cash receipts and cash payments are presented and classified and applies to all entities, including both business entities and not-for-profit entities that are required to present a statement of cash flows under Topic 230. ASU 2016-15 will take effect for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017 and early adoption is permitted. The Company has evaluated the impact of ASU 2016-15 and has determined the impact to be immaterial. The Company already presents cash paid on contingent consideration in business combination as prescribed by ASU 2016-15 and does not, at this time, engage in the other activities being addressed. In March 2016, the FASB issued ASU 2016-09, "Improvements to Employee Share Based Payment Accounting" ("ASU 2016-09"), which amends guidance issued in Accounting Standards Codification ("ASC") Topic 718, Compensation - Stock Compensation. ASU 2016-09 simplifies several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. ASU 2016-09 is effective for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years and early adoption is permitted. The Company has evaluated the impact of adoption of the ASU on its Consolidated Financial Statements. The principal impact will be that the tax benefit or expense from stock compensation will be presented in the income tax line of the Statement of Income rather than the current presentation as a component of equity on the Balance Sheet. Also the tax benefit or expense will be presented as activity in Cash Flow from Operating Activity rather than the current presentation as Cash Flow from Financing Activity in the Statement of Cash Flows. The Company will also continue to estimate forfeitures of stock grants as allowed by ASU 2016-09. In March 2016, the FASB issued ASU 2016-08, "Principal Versus Agent Considerations (Reporting Revenue Gross Versus Net)" ("ASU 2016-08") to clarify certain aspects of the principal-versus-agent guidance included in the new revenue standard ASU 2014-09 "Revenue from Contracts with Customers" ("ASU 2014-09"). The FASB issued the ASU in response to concerns identified by stakeholders, including those related to (1) determining the appropriate unit of account under the revenue standard’s principal-versus-agent guidance and (2) applying the indicators of whether an entity is a principal or an agent in accordance with the revenue standard’s control principle. ASU 2016-08 is effective contemporaneous with ASU 2014-09 beginning January 1, 2018. The impact of ASU 2016-08 is currently being evaluated along with ASU 2014-09. At this point in our evaluation the potential impact would be limited to the claims administering activities within our Services Segment and therefore not material to the Company. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842)” (“ASU 2016-02”), which provides guidance for accounting for leases. Under ASU 2016-02, the Company will be required to recognize the assets and liabilities for the rights and obligations created by leased assets. ASU 2016-02 will take effect for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company continues to evaluate the impact of this pronouncement with the principal impact being that the present value of the remaining lease payments be presented as a liability on the Balance Sheet as well as an asset of similar value representing the “Right of Use” for those leased properties. As detailed in Note 13, the undiscounted contractual cash payments remaining on leased properties is $213 million as of December 31, 2016. In November 2015, FASB issued ASU No. 2015-17, “Income Taxes (Topic 740) - Balance Sheet Classification of Deferred Taxes” (“ASU 2015-17”), which simplifies the presentation of deferred income taxes by requiring deferred tax assets and liabilities be classified as a single non-current item on the balance sheet. ASU 2015-17 is effective for fiscal years beginning after December 15, 2016 with early adoption permitted as of the beginning of any interim or annual reporting period. The Company plans to adopt ASU 2015-17 in the first quarter of 2017. This is not expected to have a material impact on our Consolidated Financial Statements other than reclassifying current deferred tax assets and liabilities to non-current in the balance sheet. In May 2014, FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers” (“ASU 2014-09”), which provides guidance for revenue recognition. ASU 2014-09 affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of non-financial assets, and supersedes the revenue recognition requirements in Topic 605, “Revenue Recognition,” and most industry-specific guidance. The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which a company expects to be entitled in exchange for those goods or services. In doing so, companies will need to use more judgment and make more estimates than under the current guidance. Specifically in situations where multiple performance obligations exist within the contract, the use of estimates is required to allocate the transaction price to each separate performance obligation. Historically 70% or more of the Company’s revenue is in the form of commissions paid by insurance carriers. Commission are earned upon the effective date of bound coverage and no significant performance obligation remains in those arrangements after coverage is bound. The Company is currently evaluating the approximately 30% of revenue earned in the form of fees against the requirements of this pronouncement. Fees are predominantly in our National Programs and Services Segments, and to a lesser extent in the large accounts business within our Retail Segment. At the conclusion of this evaluation it may be determined that fee revenue from certain agreements will be recognized in earlier periods under the new guidance in comparison to our current accounting policies and others will be recognized in later periods. Based upon the work completed to date, management does not expect the overall impact to be significant. ASU 2014-09 is effective for the Company beginning January 1, 2018, after FASB voted to delay the effective date by one year. At that time, the Company may adopt the new standard under the full retrospective approach or the modified retrospective approach. We do not anticipate a material change in our internal control framework necessitated by the adoption of ASU 2014-09.

Net Income Per Share (Tables)

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Reconciliation between Basic and Diluted Weighted Average Shares Outstanding

The following is a reconciliation between basic and diluted weighted-average shares outstanding for the years ended December 31:



(in thousands, except per share data)	2016			2015			2014
Net income	$	257,491		$	243,318		$	206,896
Net income attributable to unvested awarded performance stock	(6,705		)	(5,695		)	(5,186		)
Net income attributable to common shares	$	250,786		$	237,623		$	201,710
Weighted-average number of common shares outstanding – basic	139,779			141,113			144,568
Less unvested awarded performance stock included in weighted-average number of common shares outstanding – basic	(3,640		)	(3,303		)	(3,624		)
Weighted-average number of common shares outstanding for basic earnings per common share	136,139			137,810			140,944
Dilutive effect of stock options	1,665			2,302			1,947
Weighted-average number of shares outstanding – diluted	137,804			140,112			142,891
Net income per share:
Basic	$	1.84		$	1.72		$	1.43
Diluted	$	1.82		$	1.70		$	1.41

Business Combinations (Tables)

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Business Combinations [Abstract]

Purchase price allocation for current year acquisitions and adjustments made for prior year acquisitions



(in thousands)
Name	Business Segment	Effective Date of Acquisition	Cash Paid		Note Payable		Other Payable		Recorded Earn-Out Payable		Net Assets Acquired		Maximum Potential Earn- Out Payable
Social Security Advocates for the Disabled LLC (SSAD)	Services	February 1, 2016	$	32,526	$	492	$	—	$	971	$	33,989	$	3,500
Morstan General Agency, Inc. (Morstan)	Wholesale Brokerage	June 1, 2016	66,050		—		10,200		3,091		79,341		5,000
Other	Various	Various	26,140		—		464		400		27,004		7,785
Total			$	124,716	$	492	$	10,664	$	4,462	$	140,334	$	16,285



(in thousands)
Name	Business Segment	Effective Date of Acquisition	Cash Paid		Other Payable		Recorded Earn-Out Payable		Net Assets Acquired		Maximum Potential Earn- Out Payable
Liberty Insurance Brokers, Inc. and Affiliates (Liberty)	Retail	February 1, 2015	$	12,000	$	—	$	2,981	$	14,981	$	3,750
Spain Agency, Inc. (Spain)	Retail	March 1, 2015	20,706		—		2,617		23,323		9,162
Bellingham Underwriters, Inc. (Bellingham)	National Programs	May 1, 2015	9,007		500		3,322		12,829		4,400
Fitness Insurance, LLC (Fitness)	Retail	June 1, 2015	9,455		—		2,379		11,834		3,500
Strategic Benefit Advisors, Inc. (SBA)	Retail	June 1, 2015	49,600		400		13,587		63,587		26,000
Bentrust Financial, Inc. (Bentrust)	Retail	December 1, 2015	10,142		391		319		10,852		2,200
MBA Insurance Agency of Arizona, Inc. (MBA)	Retail	December 1, 2015	68		8,442		6,063		14,573		9,500
Smith Insurance, Inc. (Smith)	Retail	December 1, 2015	12,096		200		1,047		13,343		6,350
Other	Various	Various	12,926		95		4,584		17,605		8,212
Total			$	136,000	$	10,028	$	36,899	$	182,927	$	73,074



(in thousands)
Name	Business Segment	Effective Date of Acquisition	Cash Paid		Other Payable		Recorded Earn-Out Payable		Net Assets Acquired		Maximum Potential Earn- Out Payable
The Wright Insurance Group, LLC (Wright)	National Programs	May 1, 2014	$	609,183	$	1,471	$	—	$	610,654	$	—
Pacific Resources Benefits Advisors, LLC (PacRes)	Retail	May 1, 2014	90,000		—		27,452		117,452		35,000
Axia Strategies, Inc (Axia)	Wholesale Brokerage	May 1, 2014	9,870		—		1,824		11,694		5,200
Other	Various	Various	12,798		433		3,953		17,184		9,262
Total			$	721,851	$	1,904	$	33,229	$	756,984	$	49,462

Estimated fair values of aggregate assets and liabilities acquired

The following table summarizes the estimated fair values of the aggregate assets and liabilities acquired as of the date of each acquisition.



(in thousands)	SSAD			Morstan			Other			Total
Cash	$	2,094		$	—		$	—		$	2,094
Other current assets	1,042			2,482			1,555			5,079
Fixed assets	307			300			77			684
Goodwill	22,352			51,454			19,570			93,376
Purchased customer accounts	13,069			26,481			11,075			50,625
Non-compete agreements	72			39			117			228
Other assets	—			—			20			20
Total assets acquired	38,936			80,756			32,414			152,106
Other current liabilities	(1,717		)	(1,415		)	(5,410		)	(8,542		)
Deferred income tax, net	(3,230		)	—			—			(3,230		)
Total liabilities assumed	(4,947		)	(1,415		)	(5,410		)	(11,772		)
Net assets acquired	$	33,989		$	79,341		$	27,004		$	140,334



(in thousands)	Liberty			Spain			Bellingham			Fitness			SBA		Bentrust			MBA			Smith			Other			Total
Other current assets	$	2,486		$	324		$	—		$	9		$	652	$	—		$	—		$	—		$	169		$	3,640
Fixed assets	40			50			25			17			41		36			33			73			59			374
Goodwill	10,010			15,748			9,608			8,105			39,859		8,166			13,471			10,374			21,040			136,381
Purchased customer accounts	4,506			7,430			3,223			3,715			23,000		2,789			7,338			3,526			(2,135		)	53,392
Non-compete agreements	24			21			21			—			21		43			11			31			156			328
Other assets	—			—			—			—			14		—			—			—			—			14
Total assets acquired	17,066			23,573			12,877			11,846			63,587		11,034			20,853			14,004			19,289			194,129
Other current liabilities	(42		)	(250		)	(48		)	(12		)	—		(182		)	(6,280		)	(504		)	(4,895		)	(12,213		)
Deferred income tax, net	—			—			—			—			—		—			—			—			2,576			2,576
Other liabilities	(2,043		)	—			—			—			—		—			—			(157		)	635			(1,565		)
Total liabilities assumed	(2,085		)	(250		)	(48		)	(12		)	—		(182		)	(6,280		)	(661		)	(1,684		)	(11,202		)
Net assets acquired	$	14,981		$	23,323		$	12,829		$	11,834		$	63,587	$	10,852		$	14,573		$	13,343		$	17,605		$	182,927

The following table summarizes the estimated fair values of the aggregate assets and liabilities acquired as of the date of each acquisition.



(in thousands)	Wright			PacRes			Axia		Other			Total
Cash	$	25,365		$	—		$	—	$	—		$	25,365
Other current assets	16,474			3,647			101		742			20,964
Fixed assets	7,172			53			24		1,724			8,973
Reinsurance recoverable	25,238			—			—		—			25,238
Prepaid reinsurance premiums	289,013			—			—		—			289,013
Goodwill	420,209			76,023			7,276		10,417			513,925
Purchased customer accounts	213,677			38,111			4,252		4,384			260,424
Non-compete agreements	966			21			41		166			1,194
Other assets	20,045			—			—		—			20,045
Total assets acquired	1,018,159			117,855			11,694		17,433			1,165,141
Other current liabilities	(14,322		)	(403		)	—		(249		)	(14,974		)
Losses and loss adjustment reserve	(25,238		)	—			—		—			(25,238		)
Unearned premiums	(289,013		)	—			—		—			(289,013		)
Deferred income tax, net	(46,566		)	—			—		—			(46,566		)
Other liabilities	(32,366		)	—			—		—			(32,366		)
Total liabilities assumed	(407,505		)	(403		)	—		(249		)	(408,157		)
Net assets acquired	$	610,654		$	117,452		$	11,694	$	17,184		$	756,984

Unaudited pro forma results

These unaudited pro forma results are not necessarily indicative of the actual results of operations that would have occurred had the acquisitions actually been made at the beginning of the respective periods.



(UNAUDITED)	For the Year Ended December 31,
(in thousands, except per share data)	2016		2015
Total revenues	$	1,789,790	$	1,716,592
Income before income taxes	$	428,194	$	414,911
Net income	$	260,346	$	250,783
Net income per share:
Basic	$	1.86	$	1.78
Diluted	$	1.84	$	1.75
weighted-average number of shares outstanding:
Basic	136,139		137,810
Diluted	137,804		140,112



(UNAUDITED)	For the Year Ended December 31,
(in thousands, except per share data)	2015		2014
Total revenues	$	1,688,297	$	1,630,992
Income before income taxes	$	411,497	$	356,426
Net income	$	248,720	$	217,053
Net income per share:
Basic	$	1.76	$	1.50
Diluted	$	1.73	$	1.48
weighted-average number of shares outstanding:
Basic	137,810		140,944
Diluted	140,112		142,891



(UNAUDITED)	For the Year Ended December 31,
(in thousands, except per share data)	2014		2013
Total revenues	$	1,630,162	$	1,520,858
Income before income taxes	$	358,229	$	409,522
Net income	$	218,150	$	248,628
Net income per share:
Basic	$	1.51	$	1.72
Diluted	$	1.49	$	1.70
Weighted-average number of shares outstanding:
Basic	140,944		141,033
Diluted	142,891		142,624

Schedule Of Business Acquisition Estimated Earn Out Payables Table [Text Block]

The resulting additions, payments, and net changes, as well as the interest expense accretion on the estimated acquisition earn-out payables, for the years ended December 31, 2016, 2015 and 2014 were as follows:



	For the Year Ended December 31,
(in thousands)	2016			2015			2014
Balance as of the beginning of the period	$	78,387		$	75,283		$	43,058
Additions to estimated acquisition earn-out payables	4,462			36,899			34,356
Payments for estimated acquisition earn-out payables	(28,213		)	(36,798		)	(12,069		)
Subtotal	54,636			75,384			65,345
Net change in earnings from estimated acquisition earn-out payables:
Change in fair value on estimated acquisition earn-out payables	6,338			13			7,375
Interest expense accretion	2,847			2,990			2,563
Net change in earnings from estimated acquisition earn-out payables	9,185			3,003			9,938
Balance as of December 31,	$	63,821		$	78,387		$	75,283

Goodwill (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Value of Goodwill by Operating Segment

The changes in the carrying value of goodwill by reportable segment for the years ended December 31, are as follows:



(in thousands)	Retail			National Programs			Wholesale Brokerage		Services			Total
Balance as of January 1, 2015	$	1,231,869		$	886,095		$	222,356	$	120,291		$	2,460,611
Goodwill of acquired businesses	113,767			18,009			4,605		—			136,381
Goodwill disposed of relating to sales of businesses	—			(2,238		)	—		(8,071		)	(10,309		)
Balance as of December 31, 2015	$	1,345,636		$	901,866		$	226,961	$	112,220		$	2,586,683
Goodwill of acquired businesses	13,117			(1		)	57,908		22,352			93,376
Goodwill of transferred businesses	571			(571		)	—		—			—
Goodwill disposed of relating to sales of businesses	(4,657		)	—			—		—			(4,657		)
Balance as of December 31, 2016	$	1,354,667		$	901,294		$	284,869	$	134,572		$	2,675,402

Amortizable Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Amortizable Intangible Assets

Amortizable intangible assets at December 31, 2016 and 2015 consisted of the following:



	December 31, 2016								December 31, 2015
(in thousands)	Gross Carrying Value		Accumulated Amortization			Net Carrying Value		Weighted Average Life in Years⁽¹⁾	Gross Carrying Value		Accumulated Amortization			Net Carrying Value		Weighted Average Life in Years⁽¹⁾
Purchased customer accounts	$	1,447,680	$	(741,770	)	$	705,910	15.0	$	1,398,986	$	(656,799	)	$	742,187	15.0
Non-compete agreements	29,668		(28,124		)	1,544		6.8	29,440		(26,947		)	2,493		6.8
Total	$	1,477,348	$	(769,894	)	$	707,454		$	1,428,426	$	(683,746	)	$	744,680


(1)	Weighted-average life calculated as of the date of acquisition.

Investments (Tables)

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Investments, Debt and Equity Securities [Abstract]

Schedule of Investments in Fixed Maturity Securities

At December 31, 2016, the Company’s amortized cost and fair values of fixed maturity securities are summarized as follows:



(in thousands)	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
U.S. Treasury securities, obligations of U.S. Government agencies and Municipals	$	26,280	$	11	$	(59	)	$	26,232
Corporate debt	2,358		13		(1		)	2,370
Total	$	28,638	$	24	$	(60	)	$	28,602

At December 31, 2015, the Company’s amortized cost and fair values of fixed maturity securities are summarized as follows:



(in thousands)	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
U.S. Treasury securities, obligations of U.S. Government agencies and Municipals	$	11,876	$	6	$	(26	)	$	11,856
Foreign government	50		—		—			50
Corporate debt	4,505		7		(16		)	4,496
Short duration fixed income fund	1,663		27		—			1,690
Total	$	18,094	$	40	$	(42	)	$	18,092

Summary of Unrealized Loss Position

he following table shows the investments’ gross unrealized loss and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position as of December 31, 2016:



(in thousands)	Less than 12 Months					12 Months or More				Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. Treasury securities, obligations of U.S. Government agencies and Municipals	$	14,663	$	(59	)	$	—	$	—	$	14,663	$	(59	)
Foreign Government	—		—			—		—		—		—
Corporate debt	1,001		(1		)	—		—		1,001		(1		)
Total	$	15,664	$	(60	)	$	—	$	—	$	15,664	$	(60	)



(in thousands)	Less than 12 Months					12 Months or More					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
U.S. Treasury securities, obligations of U.S. Government agencies and Municipals	$	8,998	$	(26	)	$	—	$	—		$	8,998	$	(26	)
Foreign Government	50		—			—		—			50		—
Corporate debt	2,731		(14		)	284		(2		)	3,015		(16		)
Total	$	11,779	$	(40	)	$	284	$	(2	)	$	12,063	$	(42	)

Amortized Cost and Fair Value of Fixed Maturity Securities by Contractual Maturity

The amortized cost and estimated fair value of the fixed maturity securities at December 31, 2016 by contractual maturity are set forth below:



(in thousands)	Amortized Cost		Fair Value
Years to maturity:
Due in one year or less	$	5,551	$	5,554
Due after one year through five years	22,757		22,708
Due after five years through ten years	330		340
Total	$	28,638	$	28,602

The amortized cost and estimated fair value of the fixed maturity securities at December 31, 2015 by contractual maturity are set forth below:



(in thousands)	Amortized Cost		Fair Value
Years to maturity:
Due in one year or less	$	5,726	$	5,722
Due after one year through five years	12,038		12,041
Due after five years through ten years	330		329
Total	$	18,094	$	18,092

Fixed Assets (Tables)

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

Fixed assets at December 31 consisted of the following:



(in thousands)	2016			2015
Furniture, fixtures and equipment	$	177,823		$	169,682
Leasehold improvements	33,137			32,132
Land, buildings and improvements	3,375			3,370
Total cost	214,335			205,184
Less accumulated depreciation and amortization	(138,528		)	(123,431		)
Total	$	75,807		$	81,753

Depreciation and amortization expense for fixed assets amounted to $21.0 million in 2016, $20.9 million in 2015, and $20.9 million in 2014.

Accrued Expenses (Tables) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Payables and Accruals [Abstract]

Other Current Liabilities [Table Text Block]

$ 29,103

$ 31,274

Accrued expenses and other liabilities

201,989

192,067

Interest Payable, Current

6,441

6,375

Reserve for policy cancellations

9,567

9,617

Accrued Rent and Vendor Expenses

28,669

29,225

Accrued Employee Benefits, Current

45,771

39,366

Accrued Bonuses

$ 82,438

$ 76,210

Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]

Accrued Expenses and Other Liabilities

Accrued expenses and other liabilities at December 31 consisted of the following:



(in thousands)	2016		2015
Accrued bonuses	$	82,438	$	76,210
Accrued compensation and benefits	45,771		39,366
Accrued rent and vendor expenses	28,669		29,225
Reserve for policy cancellations	9,567		9,617
Accrued interest	6,441		6,375
Other	29,103		31,274
Total	$	201,989	$	192,067

Schedule of Accrued Liabilities [Table Text Block]

Accrued expenses and other liabilities at December 31 consisted of the following:



(in thousands)	2016		2015
Accrued bonuses	$	82,438	$	76,210
Accrued compensation and benefits	45,771		39,366
Accrued rent and vendor expenses	28,669		29,225
Reserve for policy cancellations	9,567		9,617
Accrued interest	6,441		6,375
Other	29,103		31,274
Total	$	201,989	$	192,067

Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

Long-Term Debt Instrument

Long-term debt at December 31, 2016 and 2015 consisted of the following:



(in thousands)	December 31, 2016			December 31, 2015
Current portion of long-term debt:
Current portion of 5-year term loan facility expires 2019	$	55,000		$	48,125
5.660% senior notes, Series C, semi-annual interest payments, balloon due 2016	—			25,000
Short-term promissory note	500			—
Total current portion of long-term debt	55,500			73,125
Long-term debt:
Note agreements:
4.500% senior notes, Series E, quarterly interest payments, balloon due 2018	100,000			100,000
4.200% senior notes, semi-annual interest payments, balloon due 2024	498,785			498,628
Total notes	598,785			598,628
Credit agreements:
5-year term loan facility, periodic interest and principal payments, LIBOR plus up to 1.750%, expires May 20, 2019	426,250			481,250
5-year revolving loan facility, periodic interest payments, currently LIBOR plus up to 1.500%, plus commitment fees up to 0.250%, expires May 20, 2019	—			—
Revolving credit loan, quarterly interest payments, LIBOR plus up to 1.400% and availability fee up to 0.250%, expires December 31, 2016	—			—
Total credit agreements	426,250			481,250
Debt issuance costs (contra)	(6,663		)	(8,260		)
Total long-term debt less unamortized discount and debt issuance costs	1,018,372			1,071,618
Current portion of long-term debt	55,500			73,125
Total debt	$	1,073,872		$	1,144,743

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21538-112644

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644

+ Details

Income Taxes (Tables) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Income Tax Contingency [Line Items]

Significant Components of Current Deferred Tax Assets

Significant components of Brown & Brown’s current deferred tax assets as of December 31 are as follows:



(in thousands)	2016		2015
Current deferred tax assets:
Deferred profit-sharing contingent commissions	$	10,567	$	9,767
Net operating loss carryforwards	10		10
Accruals and reserves	14,032		14,858
Total current deferred tax assets	$	24,609	$	24,635

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

Significant components of Brown & Brown’s non-current deferred tax liabilities and assets as of December 31 are as follows:



(in thousands)	2016			2015
Non-current deferred tax liabilities:
Fixed assets	$	6,425		$	8,585
Net unrealized holding (loss)/gain on available-for-sale securities	(12		)	(9		)
Intangible assets	422,478			393,251
Total non-current deferred tax liabilities	428,891			401,827
Non-current deferred tax assets:
Deferred compensation	44,912			38,966
Net operating loss carryforwards	2,384			2,518
Valuation allowance for deferred tax assets	(700		)	(606		)
Total non-current deferred tax assets	46,596			40,878
Net non-current deferred tax liability	$	382,295		$	360,949

Income Tax Disclosure [Text Block]

Income Taxes

Significant components of the provision for income taxes for the years ended December 31 are as follows:



(in thousands)	2016		2015		2014
Current:
Federal	$	126,145	$	118,490	$	109,893
State	21,110		17,625		15,482
Foreign	590		430		109
Total current provision	147,845		136,545		125,484
Deferred:
Federal	15,551		18,416		5,987
State	2,612		4,280		1,440
Foreign	—		—		(58		)
Total deferred provision	18,163		22,696		7,369
Total tax provision	$	166,008	$	159,241	$	132,853

A reconciliation of the differences between the effective tax rate and the federal statutory tax rate for the years ended December 31 is as follows:



	2016	2015	2014
Federal statutory tax rate	35.0%	35.0%	35.0%
State income taxes, net of federal income tax benefit	3.9	3.9	3.3
Non-deductible employee stock purchase plan expense	0.3	0.3	0.3
Non-deductible meals and entertainment	0.3	0.3	0.4
Other, net	(0.3)	0.1	0.1
Effective tax rate	39.2%	39.6%	39.1%

Significant components of Brown & Brown’s current deferred tax assets as of December 31 are as follows:



(in thousands)	2016		2015
Current deferred tax assets:
Deferred profit-sharing contingent commissions	$	10,567	$	9,767
Net operating loss carryforwards	10		10
Accruals and reserves	14,032		14,858
Total current deferred tax assets	$	24,609	$	24,635

Significant components of Brown & Brown’s non-current deferred tax liabilities and assets as of December 31 are as follows:



(in thousands)	2016			2015
Non-current deferred tax liabilities:
Fixed assets	$	6,425		$	8,585
Net unrealized holding (loss)/gain on available-for-sale securities	(12		)	(9		)
Intangible assets	422,478			393,251
Total non-current deferred tax liabilities	428,891			401,827
Non-current deferred tax assets:
Deferred compensation	44,912			38,966
Net operating loss carryforwards	2,384			2,518
Valuation allowance for deferred tax assets	(700		)	(606		)
Total non-current deferred tax assets	46,596			40,878
Net non-current deferred tax liability	$	382,295		$	360,949

Income taxes paid in 2016, 2015 and 2014 were $143.1 million, $132.9 million, and $118.3 million respectively.

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:



(in thousands)	2016			2015			2014
Unrecognized tax benefits balance at January 1	$	584		$	113		$	391
Gross increases for tax positions of prior years	412			773			—
Gross decreases for tax positions of prior years	(41		)	—			(21		)
Settlements	(205		)	(302		)	(257		)
Unrecognized tax benefits balance at December 31	$	750		$	584		$	113

Summary of Income Tax Contingencies [Table Text Block]

$ 18,163

$ 22,696

$ 7,369

Summary of Positions for which Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Table Text Block]

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:



(in thousands)	2016			2015			2014
Unrecognized tax benefits balance at January 1	$	584		$	113		$	391
Gross increases for tax positions of prior years	412			773			—
Gross decreases for tax positions of prior years	(41		)	—			(21		)
Settlements	(205		)	(302		)	(257		)
Unrecognized tax benefits balance at December 31	$	750		$	584		$	113

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

Significant components of the provision for income taxes for the years ended December 31 are as follows:



(in thousands)	2016		2015		2014
Current:
Federal	$	126,145	$	118,490	$	109,893
State	21,110		17,625		15,482
Foreign	590		430		109
Total current provision	147,845		136,545		125,484
Deferred:
Federal	15,551		18,416		5,987
State	2,612		4,280		1,440
Foreign	—		—		(58		)
Total deferred provision	18,163		22,696		7,369
Total tax provision	$	166,008	$	159,241	$	132,853

Stock Based Compensation (Tables) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share-based Compensation

$ 16,052

$ 15,513

$ 19,363

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

A summary of stock option activity for the years ended December 31, 2016, 2015 and 2014 is as follows:



Stock Options	Shares Under Option		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value (in thousands)
Outstanding at January 1, 2014	622,945		$	18.39	4.1	$	7,289
Granted	—		$	—
Exercised	(106,589	)	$	18.48
Forfeited	(46,000	)	$	18.48
Expired	—		$	—
Outstanding at December 31, 2014	470,356		$	18.57	3.1	$	5,087
Granted	—		$	—
Exercised	(151,767	)	$	18.48
Forfeited	(49,000	)	$	19.36
Expired	—		$	—
Outstanding at December 31, 2015	269,589		$	18.48	2.2	$	2,395
Granted	—		$	—
Exercised	(64,589	)	$	18.48
Forfeited	(30,000	)	$	18.48
Expired	—		$	—
Outstanding at December 31, 2016	175,000		$	18.48	1.2	$	4,616
Ending vested and expected to vest at December 31, 2016	175,000		$	18.48	1.2	$	4,616
Exercisable at December 31, 2016	175,000		$	18.48	1.2	$	4,616
Exercisable at December 31, 2015	164,589		$	18.48	2.2	$	2,241
Exercisable at December 31, 2014	316,356		$	18.48	3.2	$	4,565

A summary of SIP activity for the years ended December 31, 2016, 2015 and 2014 is as follows:



	Weighted- Average Grant Date Fair Value		Granted Shares		Awarded Shares		Shares Not Yet Awarded
Outstanding at January 1, 2014	$	27.96	6,606,101		995,717		5,610,384
Granted	$	31.02	422,572		113,088		309,484
Awarded	$	—	—		—		—
Vested	$	—	—		—		—
Forfeited	$	27.41	(369,626	)	(47,915	)	(321,711	)
Outstanding at December 31, 2014	$	28.19	6,659,047		1,060,890		5,598,157
Granted	$	31.74	481,166		164,646		316,520
Awarded	$	—	—		—		—
Vested	$	—	—		—		—
Forfeited	$	26.32	(863,241	)	(95,542	)	(767,699	)
Outstanding at December 31, 2015	$	28.74	6,276,972		1,129,994		5,146,978
Granted	$	35.52	972,099		182,653		789,446		⁽¹⁾
Awarded	$	24.93	—		1,431,319		(1,431,319	)
Vested	$	27.31	(166,884	)	(166,884	)	—
Forfeited	$	25.34	(954,131	)	(175,788	)	(778,343	)
Outstanding at December 31, 2016	$	29.96	6,128,056		2,401,294		3,726,762

A summary of PSP activity for the years ended December 31, 2016, 2015 and 2014 is as follows:



	Weighted- Average Grant Date Fair Value		Granted Shares		Awarded Shares		Shares Not Yet Awarded
Outstanding at January 1, 2014	$	8.62	2,371,287		2,295,852		75,435
Granted	$	—	—		—		—
Awarded	$	—	—		—		—
Vested	$	16.76	(277,009	)	(277,009	)	—
Forfeited	$	9.75	(165,647	)	(115,630	)	(50,017	)
Outstanding at December 31, 2014	$	8.71	1,928,631		1,903,213		25,418
Granted	$	—	—		—		—
Awarded	$	—	—		—		—
Vested	$	5.55	(208,889	)	(208,889	)	—
Forfeited	$	9.78	(117,528	)	(100,110	)	(17,418	)
Outstanding at December 31, 2015	$	9.03	1,602,214		1,594,214		8,000
Granted	$	—	—		—		—
Awarded	$	—	—		4,000		(4,000	)
Vested	$	6.39	(506,422	)	(506,422	)	—
Forfeited	$	10.52	(92,517	)	(88,517	)	(4,000	)
Outstanding at December 31, 2016	$	10.23	1,003,275		1,003,275		—

Stock Incentive Plan [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share-based Compensation

$ 11,049

11,111

14,447

PerformanceStockPlan [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share-based Compensation

1,305

972

2,354

Employee Stock [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share-based Compensation

$ 3,698

$ 3,430

$ 2,425

Stock Based Compensation Summary of Stock Based Compensation Plan Activity (Tables)

12 Months Ended

Dec. 31, 2016

Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

A summary of stock option activity for the years ended December 31, 2016, 2015 and 2014 is as follows:



Stock Options	Shares Under Option		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value (in thousands)
Outstanding at January 1, 2014	622,945		$	18.39	4.1	$	7,289
Granted	—		$	—
Exercised	(106,589	)	$	18.48
Forfeited	(46,000	)	$	18.48
Expired	—		$	—
Outstanding at December 31, 2014	470,356		$	18.57	3.1	$	5,087
Granted	—		$	—
Exercised	(151,767	)	$	18.48
Forfeited	(49,000	)	$	19.36
Expired	—		$	—
Outstanding at December 31, 2015	269,589		$	18.48	2.2	$	2,395
Granted	—		$	—
Exercised	(64,589	)	$	18.48
Forfeited	(30,000	)	$	18.48
Expired	—		$	—
Outstanding at December 31, 2016	175,000		$	18.48	1.2	$	4,616
Ending vested and expected to vest at December 31, 2016	175,000		$	18.48	1.2	$	4,616
Exercisable at December 31, 2016	175,000		$	18.48	1.2	$	4,616
Exercisable at December 31, 2015	164,589		$	18.48	2.2	$	2,241
Exercisable at December 31, 2014	316,356		$	18.48	3.2	$	4,565

A summary of SIP activity for the years ended December 31, 2016, 2015 and 2014 is as follows:



	Weighted- Average Grant Date Fair Value		Granted Shares		Awarded Shares		Shares Not Yet Awarded
Outstanding at January 1, 2014	$	27.96	6,606,101		995,717		5,610,384
Granted	$	31.02	422,572		113,088		309,484
Awarded	$	—	—		—		—
Vested	$	—	—		—		—
Forfeited	$	27.41	(369,626	)	(47,915	)	(321,711	)
Outstanding at December 31, 2014	$	28.19	6,659,047		1,060,890		5,598,157
Granted	$	31.74	481,166		164,646		316,520
Awarded	$	—	—		—		—
Vested	$	—	—		—		—
Forfeited	$	26.32	(863,241	)	(95,542	)	(767,699	)
Outstanding at December 31, 2015	$	28.74	6,276,972		1,129,994		5,146,978
Granted	$	35.52	972,099		182,653		789,446		⁽¹⁾
Awarded	$	24.93	—		1,431,319		(1,431,319	)
Vested	$	27.31	(166,884	)	(166,884	)	—
Forfeited	$	25.34	(954,131	)	(175,788	)	(778,343	)
Outstanding at December 31, 2016	$	29.96	6,128,056		2,401,294		3,726,762

A summary of PSP activity for the years ended December 31, 2016, 2015 and 2014 is as follows:



	Weighted- Average Grant Date Fair Value		Granted Shares		Awarded Shares		Shares Not Yet Awarded
Outstanding at January 1, 2014	$	8.62	2,371,287		2,295,852		75,435
Granted	$	—	—		—		—
Awarded	$	—	—		—		—
Vested	$	16.76	(277,009	)	(277,009	)	—
Forfeited	$	9.75	(165,647	)	(115,630	)	(50,017	)
Outstanding at December 31, 2014	$	8.71	1,928,631		1,903,213		25,418
Granted	$	—	—		—		—
Awarded	$	—	—		—		—
Vested	$	5.55	(208,889	)	(208,889	)	—
Forfeited	$	9.78	(117,528	)	(100,110	)	(17,418	)
Outstanding at December 31, 2015	$	9.03	1,602,214		1,594,214		8,000
Granted	$	—	—		—		—
Awarded	$	—	—		4,000		(4,000	)
Vested	$	6.39	(506,422	)	(506,422	)	—
Forfeited	$	10.52	(92,517	)	(88,517	)	(4,000	)
Outstanding at December 31, 2016	$	10.23	1,003,275		1,003,275		—

Stock Based Compensation Stock Options Outstanding (Tables)

12 Months Ended

Dec. 31, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

A summary of stock option activity for the years ended December 31, 2016, 2015 and 2014 is as follows:



Stock Options	Shares Under Option		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value (in thousands)
Outstanding at January 1, 2014	622,945		$	18.39	4.1	$	7,289
Granted	—		$	—
Exercised	(106,589	)	$	18.48
Forfeited	(46,000	)	$	18.48
Expired	—		$	—
Outstanding at December 31, 2014	470,356		$	18.57	3.1	$	5,087
Granted	—		$	—
Exercised	(151,767	)	$	18.48
Forfeited	(49,000	)	$	19.36
Expired	—		$	—
Outstanding at December 31, 2015	269,589		$	18.48	2.2	$	2,395
Granted	—		$	—
Exercised	(64,589	)	$	18.48
Forfeited	(30,000	)	$	18.48
Expired	—		$	—
Outstanding at December 31, 2016	175,000		$	18.48	1.2	$	4,616
Ending vested and expected to vest at December 31, 2016	175,000		$	18.48	1.2	$	4,616
Exercisable at December 31, 2016	175,000		$	18.48	1.2	$	4,616
Exercisable at December 31, 2015	164,589		$	18.48	2.2	$	2,241
Exercisable at December 31, 2014	316,356		$	18.48	3.2	$	4,565

A summary of SIP activity for the years ended December 31, 2016, 2015 and 2014 is as follows:



	Weighted- Average Grant Date Fair Value		Granted Shares		Awarded Shares		Shares Not Yet Awarded
Outstanding at January 1, 2014	$	27.96	6,606,101		995,717		5,610,384
Granted	$	31.02	422,572		113,088		309,484
Awarded	$	—	—		—		—
Vested	$	—	—		—		—
Forfeited	$	27.41	(369,626	)	(47,915	)	(321,711	)
Outstanding at December 31, 2014	$	28.19	6,659,047		1,060,890		5,598,157
Granted	$	31.74	481,166		164,646		316,520
Awarded	$	—	—		—		—
Vested	$	—	—		—		—
Forfeited	$	26.32	(863,241	)	(95,542	)	(767,699	)
Outstanding at December 31, 2015	$	28.74	6,276,972		1,129,994		5,146,978
Granted	$	35.52	972,099		182,653		789,446		⁽¹⁾
Awarded	$	24.93	—		1,431,319		(1,431,319	)
Vested	$	27.31	(166,884	)	(166,884	)	—
Forfeited	$	25.34	(954,131	)	(175,788	)	(778,343	)
Outstanding at December 31, 2016	$	29.96	6,128,056		2,401,294		3,726,762

A summary of PSP activity for the years ended December 31, 2016, 2015 and 2014 is as follows:



	Weighted- Average Grant Date Fair Value		Granted Shares		Awarded Shares		Shares Not Yet Awarded
Outstanding at January 1, 2014	$	8.62	2,371,287		2,295,852		75,435
Granted	$	—	—		—		—
Awarded	$	—	—		—		—
Vested	$	16.76	(277,009	)	(277,009	)	—
Forfeited	$	9.75	(165,647	)	(115,630	)	(50,017	)
Outstanding at December 31, 2014	$	8.71	1,928,631		1,903,213		25,418
Granted	$	—	—		—		—
Awarded	$	—	—		—		—
Vested	$	5.55	(208,889	)	(208,889	)	—
Forfeited	$	9.78	(117,528	)	(100,110	)	(17,418	)
Outstanding at December 31, 2015	$	9.03	1,602,214		1,594,214		8,000
Granted	$	—	—		—		—
Awarded	$	—	—		4,000		(4,000	)
Vested	$	6.39	(506,422	)	(506,422	)	—
Forfeited	$	10.52	(92,517	)	(88,517	)	(4,000	)
Outstanding at December 31, 2016	$	10.23	1,003,275		1,003,275		—

Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding [Table Text Block]

The following table summarizes information about stock options outstanding at December 31, 2016:



Options Outstanding					Options Exercisable
Exercise Price	Number Outstanding	Weighted Average Remaining Contractual Life (years)	Weighted Average Exercise Price		Number Exercisable	Weighted Average Exercise Price
$18.48	175,000	1.2	$	18.48	175,000	$	18.48
Totals	175,000	1.2	$	18.48	175,000	$	18.48

Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]



(in thousands)
2017	$	42,727
2018	39,505
2019	34,277
2020	29,393
2021	22,222
Thereafter	45,036
Total minimum future lease payments	$	213,160

Rental expense in 2016, 2015 and 2014 for operating leases totaled $49.3 million, $46.0 million, and $49.0 million, respectively.

Quarterly Operating Results (Tables)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]

Quarterly operating results for 2016 and 2015 were as follows:



(in thousands, except per share data)	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
2016
Total revenues	$	424,173	$	446,518	$	462,274	$	433,664
Total expenses	$	321,624	$	337,441	$	345,302	$	338,763
Income before income taxes	$	102,549	$	109,077	$	116,972	$	94,901
Net income	$	62,070	$	66,250	$	71,545	$	57,626
Net income per share:
Basic	$	0.45	$	0.47	$	0.51	$	0.41
Diluted	$	0.44	$	0.47	$	0.50	$	0.41
2015
Total revenues	$	404,298	$	419,447	$	432,167	$	404,597
Total expenses	$	310,520	$	318,533	$	319,337	$	309,560
Income before income taxes	$	93,778	$	100,914	$	112,830	$	95,037
Net income	$	56,951	$	61,005	$	67,427	$	57,935
Net income per share:
Basic	$	0.40	$	0.43	$	0.48	$	0.41
Diluted	$	0.39	$	0.43	$	0.47	$	0.41

Segment Information (Tables)

12 Months Ended

Dec. 31, 2016

Segment Reporting Information [Line Items]

Segment Information

Segment results for prior periods have been recast to reflect the current year segmental structure. Certain reclassifications

have been made to the prior year amounts reported in this Annual Report on Form 10-K in order to conform to the current year

presentation.



	For the year ended December 31, 2016
(in thousands)	Retail		National Programs		Wholesale Brokerage		Services		Other			Total
Total revenues	$	917,406	$	448,516	$	243,103	$	156,365	$	1,239		$	1,766,629
Investment income	$	37	$	628	$	4	$	283	$	504		$	1,456
Amortization	$	43,447	$	27,920	$	10,801	$	4,485	$	10		$	86,663
Depreciation	$	6,191	$	7,868	$	1,975	$	1,881	$	3,088		$	21,003
Interest expense	$	38,216	$	45,738	$	3,976	$	4,950	$	(53,399	)	$	39,481
Income before income taxes	$	188,001	$	91,762	$	62,623	$	24,338	$	56,775		$	423,499
Total assets	$	3,854,393	$	2,711,378	$	1,108,829	$	371,645	$	(2,758,902	)	$	5,287,343
Capital expenditures	$	5,951	$	6,977	$	1,301	$	656	$	2,880		$	17,765



	For the year ended December 31, 2015
(in thousands)	Retail		National Programs		Wholesale Brokerage		Services		Other			Total
Total revenues	$	870,346	$	428,734	$	216,996	$	145,365	$	(932	)	$	1,660,509
Investment income	$	87	$	210	$	150	$	42	$	515		$	1,004
Amortization	$	45,145	$	28,479	$	9,739	$	4,019	$	39		$	87,421
Depreciation	$	6,558	$	7,250	$	2,142	$	1,988	$	2,952		$	20,890
Interest expense	$	41,036	$	55,705	$	891	$	5,970	$	(64,354	)	$	39,248
Income before income taxes	$	181,938	$	67,673	$	64,708	$	19,713	$	68,527		$	402,559
Total assets	$	3,507,476	$	2,505,752	$	895,782	$	285,459	$	(2,189,990	)	$	5,004,479
Capital expenditures	$	6,797	$	6,001	$	3,084	$	1,088	$	1,405		$	18,375



	For the year ended December 31, 2014
(in thousands)	Retail		National Programs		Wholesale Brokerage		Services		Other			Total
Total revenues	$	823,686	$	404,239	$	211,911	$	136,558	$	(598	)	$	1,575,796
Investment income	$	67	$	164	$	26	$	3	$	487		$	747
Amortization	$	42,935	$	25,129	$	10,703	$	4,135	$	39		$	82,941
Depreciation	$	6,449	$	7,805	$	2,470	$	2,213	$	1,958		$	20,895
Interest expense	$	43,502	$	49,663	$	1,294	$	7,678	$	(73,729	)	$	28,408
Income before income taxes	$	157,491	$	73,178	$	8,276	$	17,870	$	82,934		$	339,749
Total assets	$	3,229,484	$	2,455,749	$	857,804	$	296,034	$	(1,892,511	)	$	4,946,560
Capital expenditures	$	6,873	$	14,133	$	1,526	$	1,210	$	1,181		$	24,923

Net Income Per Share - Reconciliation between Basic and Diluted Weighted Average Shares Outstanding (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Earnings Per Share [Abstract]
Net income	$ 57,626	$ 71,545	$ 66,250	$ 62,070	$ 57,935	$ 67,427	$ 61,005	$ 56,951	$ 257,491	$ 243,318	$ 206,896
Net income attributable to unvested awarded performance stock									(6,705)	(5,695)	(5,186)
Net income attributable to common shares									$ 250,786	$ 237,623	$ 201,710
Weighted average number of common shares outstanding - basic (in shares)									139,779	141,113	144,568
Less unvested awarded performance stock included in weighted average number of common shares outstanding - basic (in shares)									(3,640)	(3,303)	(3,624)
Weighted average number of common shares outstanding for basic earnings per common share (in shares)									136,139	137,810	140,944
Dilutive effect of stock options (in shares)									1,665	2,302	1,947
Weighted average number of shares outstanding - diluted (in shares)									137,804	140,112	142,891
Basic (in dollars per share)	$ 0.0041	$ 0.0051	$ 0.0047	$ 0.0045	$ 0.0041	$ 0.0048	$ 0.0043	$ 0.0040	$ 1.84	$ 1.72	$ 1.43
Diluted (in dollars per share)	$ 0.0041	$ 0.0050	$ 0.0047	$ 0.0044	$ 0.0041	$ 0.0047	$ 0.0043	$ 0.0039	$ 1.82	$ 1.70	$ 1.41

Business Combinations - Additional Information (Detail)	12 Months Ended
Business Combinations - Additional Information (Detail)	Dec. 31, 2016 USD ($) acquisition	Dec. 31, 2015 USD ($) acquisition customer_account	Dec. 31, 2014 USD ($) acquisition	Dec. 31, 2013 USD ($)
Business Acquisition [Line Items]
Maximum Future Contingency payments Acquisitions	$ 117,200,000
Number of acquisitions \| acquisition	8	13
Aggregate purchase price of acquisitions	$ 917,497	$ 503,442	$ 25,941
Payments to Acquire Businesses, Gross	124,716,000	136,000,000	721,851,000
Business Acquisition Cost- Note Payable	492,000
Goodwill assigned	93,376,000	136,381,000	513,925,000
Goodwill currently deductible for income tax purposes	88,900,000	91,100,000	141,900,000
Goodwill currently non-deductible for income tax purposes		8,400,000	338,800,000
Goodwill related to the recorded earn-out payables	4,500,000	36,900,000	33,200,000
Total revenues related to acquisitions	34,200,000	28,200,000	112,200,000
Income before income taxes related to acquisitions	4,300,000	1,500,000	(1,300,000)
Estimated acquisition earn-out payables	63,821,000	78,387,000	75,283,000	$ 43,058,000
Other Payable	10,664,000	10,028,000	1,904,000
Business Acquisitions Contingent Consideration At Fair Value	4,462,000	36,899,000	33,229,000
Net Assets Acquired	140,334,000	182,927,000	756,984,000
Maximum Potential Earn- Out Payable	16,285,000	73,074,000	49,462,000
Accounts payable
Business Acquisition [Line Items]
Estimated acquisition earn-out payables	$ 31,800,000	$ 25,300,000	$ 26,000,000
Purchased customer accounts
Business Acquisition [Line Items]
Weighted average life (years)	15 years	15 years	15 years
Non-compete agreements
Business Acquisition [Line Items]
Weighted average life (years)	5 years	5 years	3 years 5 months
National Programs
Business Acquisition [Line Items]
Goodwill assigned	$ 57,900,000	$ 18,000,000	$ 420,000,000
Wholesale Brokerage [Member]
Business Acquisition [Line Items]
Goodwill assigned	0	4,600,000	7,700,000
Services [Member]
Business Acquisition [Line Items]
Goodwill assigned	22,400,000		(200,000)
Other non-current liability
Business Acquisition [Line Items]
Estimated acquisition earn-out payables	32,000,000	$ 53,100,000	$ 49,300,000
Social Security Advocates for the Disabled LLC [Member]
Business Acquisition [Line Items]
Goodwill assigned	22,352,000
Net Assets Acquired	$ 33,989,000
Social Security Advocates for the Disabled LLC [Member] \| Services [Member]
Business Acquisition [Line Items]
Effective Date of Acquisition	Feb. 01, 2016
Payments to Acquire Businesses, Gross	$ 32,526,000
Business Acquisition Cost- Note Payable	492,000
Other Payable	0
Business Acquisitions Contingent Consideration At Fair Value	971,000
Net Assets Acquired	33,989,000
Maximum Potential Earn- Out Payable	3,500,000
Morstan General Agency, Inc [Member]
Business Acquisition [Line Items]
Goodwill assigned	51,454,000
Net Assets Acquired	$ 79,341,000
Morstan General Agency, Inc [Member] \| Wholesale Brokerage [Member]
Business Acquisition [Line Items]
Effective Date of Acquisition	Jun. 01, 2016
Payments to Acquire Businesses, Gross	$ 66,050,000
Business Acquisition Cost- Note Payable	0
Other Payable	10,200,000
Business Acquisitions Contingent Consideration At Fair Value	3,091,000
Net Assets Acquired	79,341,000
Maximum Potential Earn- Out Payable	$ 5,000,000
Asset Acquisitions [Member]
Business Acquisition [Line Items]
Number of acquisitions \| acquisition		13	9
Book of Business Purchases [Member]
Business Acquisition [Line Items]
Number of acquisitions	3	4	5
Stock Acquisitions [Member]
Business Acquisition [Line Items]
Number of acquisitions \| acquisition	1	0	1
Other Acquisitions [Member]
Business Acquisition [Line Items]
Goodwill assigned		$ 21,040,000	$ 10,417,000
Net Assets Acquired		17,605,000	$ 17,184,000
Other Acquisitions [Member] \| Various
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	$ 26,140,000	12,926,000
Business Acquisition Cost- Note Payable	0
Other Payable	464,000	95,000
Business Acquisitions Contingent Consideration At Fair Value	400,000	4,584,000
Net Assets Acquired	27,004,000	17,605,000
Maximum Potential Earn- Out Payable	$ 7,785,000	$ 8,212,000

Business Combinations - Acquisitions Accounted for Business Combinations (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Combination, Separately Recognized Transactions [Line Items]
Cash Paid	$ 124,716	$ 136,000	$ 721,851
Other Payable	10,664	10,028	1,904
Recorded Earn-Out Payable	4,462	36,899	33,229
Net Assets Acquired	140,334	182,927	756,984
Maximum Potential Earn- Out Payable	16,285	73,074	49,462
Liberty Insurance Brokers, Inc. and Affiliates [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Net Assets Acquired		$ 14,981
Liberty Insurance Brokers, Inc. and Affiliates [Member] \| Retail
Business Combination, Separately Recognized Transactions [Line Items]
Effective Date of Acquisition		Feb. 01, 2015
Cash Paid		$ 12,000
Other Payable		0
Recorded Earn-Out Payable		2,981
Net Assets Acquired		14,981
Maximum Potential Earn- Out Payable		3,750
Wright Insurance Group Llc [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Net Assets Acquired			$ 610,654
Wright Insurance Group Llc [Member] \| National Programs
Business Combination, Separately Recognized Transactions [Line Items]
Effective Date of Acquisition			May 01, 2014
Cash Paid			$ 609,183
Other Payable			1,471
Recorded Earn-Out Payable			0
Net Assets Acquired			610,654
Maximum Potential Earn- Out Payable			0
Spain Agency, Inc. (Spain)
Business Combination, Separately Recognized Transactions [Line Items]
Net Assets Acquired		$ 23,323
Spain Agency, Inc. (Spain) \| Retail
Business Combination, Separately Recognized Transactions [Line Items]
Effective Date of Acquisition		Mar. 01, 2015
Cash Paid		$ 20,706
Other Payable		0
Recorded Earn-Out Payable		2,617
Net Assets Acquired		23,323
Maximum Potential Earn- Out Payable		9,162
Bellingham Underwriters, Inc. [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Net Assets Acquired		$ 12,829
Bellingham Underwriters, Inc. [Member] \| National Programs
Business Combination, Separately Recognized Transactions [Line Items]
Effective Date of Acquisition		May 01, 2015
Bellingham Underwriters, Inc. [Member] \| National Programs Divisions [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Cash Paid		$ 9,007
Other Payable		500
Recorded Earn-Out Payable		3,322
Net Assets Acquired		12,829
Maximum Potential Earn- Out Payable		4,400
Fitness Insurance, LLC [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Net Assets Acquired		$ 11,834
Fitness Insurance, LLC [Member] \| Retail
Business Combination, Separately Recognized Transactions [Line Items]
Effective Date of Acquisition		Jun. 01, 2015
Cash Paid		$ 9,455
Other Payable		0
Recorded Earn-Out Payable		2,379
Net Assets Acquired		11,834
Maximum Potential Earn- Out Payable		3,500
Other
Business Combination, Separately Recognized Transactions [Line Items]
Net Assets Acquired		$ 63,587
Other \| Retail
Business Combination, Separately Recognized Transactions [Line Items]
Effective Date of Acquisition		Jun. 01, 2015
Cash Paid		$ 49,600
Other Payable		400
Recorded Earn-Out Payable		13,587
Net Assets Acquired		63,587
Maximum Potential Earn- Out Payable		26,000
Bentrust Financial, Inc. [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Net Assets Acquired		$ 10,852
Bentrust Financial, Inc. [Member] \| Retail
Business Combination, Separately Recognized Transactions [Line Items]
Effective Date of Acquisition		Dec. 01, 2015
Cash Paid		$ 10,142
Other Payable		391
Recorded Earn-Out Payable		319
Net Assets Acquired		10,852
Maximum Potential Earn- Out Payable		2,200
MBA Insurance Agency of Arizona, Inc. [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Net Assets Acquired		$ 14,573
MBA Insurance Agency of Arizona, Inc. [Member] \| Retail
Business Combination, Separately Recognized Transactions [Line Items]
Effective Date of Acquisition		Dec. 01, 2015
Cash Paid		$ 68
Other Payable		8,442
Recorded Earn-Out Payable		6,063
Net Assets Acquired		14,573
Maximum Potential Earn- Out Payable		9,500
Smith Insurance, Inc. [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Net Assets Acquired		$ 13,343
Smith Insurance, Inc. [Member] \| Retail
Business Combination, Separately Recognized Transactions [Line Items]
Effective Date of Acquisition		Dec. 01, 2015
Cash Paid		$ 12,096
Other Payable		200
Recorded Earn-Out Payable		1,047
Net Assets Acquired		13,343
Maximum Potential Earn- Out Payable		6,350
Other Acquisitions [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Net Assets Acquired		17,605	17,184
Other Acquisitions [Member] \| Various
Business Combination, Separately Recognized Transactions [Line Items]
Cash Paid	26,140	12,926
Other Payable	464	95
Recorded Earn-Out Payable	400	4,584
Net Assets Acquired	27,004	17,605
Maximum Potential Earn- Out Payable	7,785	$ 8,212
Pacific Resources Benefits Advisors [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Net Assets Acquired			$ 117,452
Pacific Resources Benefits Advisors [Member] \| Retail
Business Combination, Separately Recognized Transactions [Line Items]
Effective Date of Acquisition			May 01, 2014
Cash Paid			$ 90,000
Other Payable			0
Recorded Earn-Out Payable			27,452
Net Assets Acquired			117,452
Maximum Potential Earn- Out Payable			35,000
Axia Strategies, Inc. [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Net Assets Acquired			$ 11,694
Axia Strategies, Inc. [Member] \| Wholesale Brokerage [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Effective Date of Acquisition			May 01, 2014
Cash Paid			$ 9,870
Other Payable			0
Recorded Earn-Out Payable			1,824
Net Assets Acquired			11,694
Maximum Potential Earn- Out Payable			5,200
Various
Business Combination, Separately Recognized Transactions [Line Items]
Net Assets Acquired	$ 27,004
Various \| Other Acquisitions [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Cash Paid			12,798
Other Payable			433
Recorded Earn-Out Payable			3,953
Net Assets Acquired			17,184
Maximum Potential Earn- Out Payable			$ 9,262
Two Thousand Fourteen Acquisitions [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax, Per Share, Diluted			$ 1.49	$ 1.70
Pro Forma Weighted Average Shares Outstanding, Diluted			142,891	142,624
Two Thousand Fifteen Acquisitions [Member]
Business Combination, Separately Recognized Transactions [Line Items]
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax, Per Share, Diluted		$ 1.73	$ 1.48
Pro Forma Weighted Average Shares Outstanding, Diluted		140,112	142,891

Business Combinations - Estimated Fair Values of Aggregate Assets and Liabilities Acquired (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Fair Value Of Assets And Liabilities Statement [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents			$ 25,365,000
Other Payable	$ 10,664,000	$ 10,028,000	1,904,000
Payments to Acquire Businesses, Gross	124,716,000	136,000,000	721,851,000
Recorded Earn-Out Payable	4,462,000	36,899,000	33,229,000
Business Acquisition Purchase Price Allocation Current Assets Prepaid Expenses And Other Assets	2,094,000
Business Acquisition Purchase Price Allocation Current Assets Prepaid Expenses And Other Assets	5,079,000	3,640,000	20,964,000
Fixed assets	684,000	374,000	8,973,000
Goodwill	93,376,000	136,381,000	513,925,000
Purchased customer accounts	50,625,000	53,392,000	260,424,000
Non-compete agreements	228,000	328,000	1,194,000
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets	20,000	14,000	20,045,000
Total assets acquired	152,106,000	194,129,000	1,165,141,000
Other current liabilities	(8,542,000)	(12,213,000)	(14,974,000)
Deferred Tax Liabilities, Net	(3,230,000)	2,576,000	(46,566,000)
Other liabilities		(1,565,000)	(32,366,000)
Total liabilities assumed	(11,772,000)	(11,202,000)	(408,157,000)
Net assets acquired	140,334,000	182,927,000	756,984,000
Maximum Potential Earn- Out Payable	16,285,000	73,074,000	49,462,000
Business Acquisitions Purchase Price Allocation Losses And Loss Adjustment Expense			(25,238,000)
Business Acquisition Purchase Price Allocation Unearned Premium			(289,013,000)
Business Acquisition Purchase Price Allocation Reinsurance Recoverables			25,238,000
Business Acquisition Purchase Price Allocation Prepaid Reinsurance Premiums			289,013,000
Social Security Advocates for the Disabled LLC [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Business Acquisition Purchase Price Allocation Current Assets Prepaid Expenses And Other Assets	2,094,000
Business Acquisition Purchase Price Allocation Current Assets Prepaid Expenses And Other Assets	1,042,000
Fixed assets	307,000
Goodwill	22,352,000
Purchased customer accounts	13,069,000
Non-compete agreements	72,000
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets	0
Total assets acquired	38,936,000
Other current liabilities	(1,717,000)
Deferred Tax Liabilities, Net	(3,230,000)
Total liabilities assumed	(4,947,000)
Net assets acquired	33,989,000
Various [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Business Acquisition Purchase Price Allocation Current Assets Prepaid Expenses And Other Assets	0
Business Acquisition Purchase Price Allocation Current Assets Prepaid Expenses And Other Assets	1,555,000
Fixed assets	77,000
Goodwill	19,570,000
Purchased customer accounts	11,075,000
Non-compete agreements	117,000
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets	20,000
Total assets acquired	32,414,000
Other current liabilities	(5,410,000)
Deferred Tax Liabilities, Net	0
Total liabilities assumed	(5,410,000)
Net assets acquired	27,004,000
Morstan General Agency, Inc [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Business Acquisition Purchase Price Allocation Current Assets Prepaid Expenses And Other Assets	0
Business Acquisition Purchase Price Allocation Current Assets Prepaid Expenses And Other Assets	2,482,000
Fixed assets	300,000
Goodwill	51,454,000
Purchased customer accounts	26,481,000
Non-compete agreements	39,000
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets	0
Total assets acquired	80,756,000
Other current liabilities	(1,415,000)
Deferred Tax Liabilities, Net	0
Total liabilities assumed	(1,415,000)
Net assets acquired	79,341,000
Spain Agency, Inc. (Spain)
Fair Value Of Assets And Liabilities Statement [Line Items]
Business Acquisition Purchase Price Allocation Current Assets Prepaid Expenses And Other Assets		324,000
Fixed assets		50,000
Goodwill		15,748,000
Purchased customer accounts		7,430,000
Non-compete agreements		21,000
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets		0
Total assets acquired		23,573,000
Other current liabilities		(250,000)
Deferred Tax Liabilities, Net		0
Other liabilities		0
Total liabilities assumed		(250,000)
Net assets acquired		23,323,000
Bellingham Underwriters, Inc. [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Business Acquisition Purchase Price Allocation Current Assets Prepaid Expenses And Other Assets		0
Fixed assets		25,000
Goodwill		9,608,000
Purchased customer accounts		3,223,000
Non-compete agreements		21,000
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets		0
Total assets acquired		12,877,000
Other current liabilities		(48,000)
Deferred Tax Liabilities, Net		0
Other liabilities		0
Total liabilities assumed		(48,000)
Net assets acquired		12,829,000
Fitness Insurance, LLC [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Business Acquisition Purchase Price Allocation Current Assets Prepaid Expenses And Other Assets		9,000
Fixed assets		17,000
Goodwill		8,105,000
Purchased customer accounts		3,715,000
Non-compete agreements		0
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets		0
Total assets acquired		11,846,000
Other current liabilities		(12,000)
Deferred Tax Liabilities, Net		0
Other liabilities		0
Total liabilities assumed		(12,000)
Net assets acquired		11,834,000
Other
Fair Value Of Assets And Liabilities Statement [Line Items]
Business Acquisition Purchase Price Allocation Current Assets Prepaid Expenses And Other Assets		652,000
Fixed assets		41,000
Goodwill		39,859,000
Purchased customer accounts		23,000,000
Non-compete agreements		21,000
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets		14,000
Total assets acquired		63,587,000
Other current liabilities		0
Deferred Tax Liabilities, Net		0
Other liabilities		0
Total liabilities assumed		0
Net assets acquired		63,587,000
Bentrust Financial, Inc. [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Business Acquisition Purchase Price Allocation Current Assets Prepaid Expenses And Other Assets		0
Fixed assets		36,000
Goodwill		8,166,000
Purchased customer accounts		2,789,000
Non-compete agreements		43,000
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets		0
Total assets acquired		11,034,000
Other current liabilities		(182,000)
Deferred Tax Liabilities, Net		0
Other liabilities		0
Total liabilities assumed		(182,000)
Net assets acquired		10,852,000
MBA Insurance Agency of Arizona, Inc. [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Business Acquisition Purchase Price Allocation Current Assets Prepaid Expenses And Other Assets		0
Fixed assets		33,000
Goodwill		13,471,000
Purchased customer accounts		7,338,000
Non-compete agreements		11,000
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets		0
Total assets acquired		20,853,000
Other current liabilities		(6,280,000)
Deferred Tax Liabilities, Net		0
Other liabilities		0
Total liabilities assumed		(6,280,000)
Net assets acquired		14,573,000
Smith Insurance, Inc. [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Business Acquisition Purchase Price Allocation Current Assets Prepaid Expenses And Other Assets		0
Fixed assets		73,000
Goodwill		10,374,000
Purchased customer accounts		3,526,000
Non-compete agreements		31,000
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets		0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets		14,004,000
Other current liabilities		(504,000)
Deferred Tax Liabilities, Net		0
Other liabilities		(157,000)
Total liabilities assumed		(661,000)
Net assets acquired		13,343,000
Other Acquisitions [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents			0
Business Acquisition Purchase Price Allocation Current Assets Prepaid Expenses And Other Assets		169,000	742,000
Fixed assets		59,000	1,724,000
Goodwill		21,040,000	10,417,000
Purchased customer accounts		(2,135,000)	4,384,000
Non-compete agreements		156,000	166,000
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets		0	0
Total assets acquired		19,289,000	17,433,000
Other current liabilities		(4,895,000)	(249,000)
Deferred Tax Liabilities, Net		2,576,000	0
Other liabilities		635,000	0
Total liabilities assumed		(1,684,000)	(249,000)
Net assets acquired		17,605,000	17,184,000
Business Acquisitions Purchase Price Allocation Losses And Loss Adjustment Expense			0
Business Acquisition Purchase Price Allocation Unearned Premium			0
Business Acquisition Purchase Price Allocation Reinsurance Recoverables			0
Business Acquisition Purchase Price Allocation Prepaid Reinsurance Premiums			0
Liberty Insurance Brokers, Inc. and Affiliates [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Business Acquisition Purchase Price Allocation Current Assets Prepaid Expenses And Other Assets		2,486,000
Fixed assets		40,000
Goodwill		10,010,000
Purchased customer accounts		4,506,000
Non-compete agreements		24,000
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets		0
Total assets acquired		17,066,000
Other current liabilities		(42,000)
Deferred Tax Liabilities, Net		0
Other liabilities		(2,043,000)
Total liabilities assumed		(2,085,000)
Net assets acquired		14,981,000
Wright Insurance Group Llc [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents			25,365,000
Business Acquisition Purchase Price Allocation Current Assets Prepaid Expenses And Other Assets			16,474,000
Fixed assets			7,172,000
Goodwill			420,209,000
Purchased customer accounts			213,677,000
Non-compete agreements			966,000
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets			20,045,000
Total assets acquired			1,018,159,000
Other current liabilities			(14,322,000)
Deferred Tax Liabilities, Net			(46,566,000)
Other liabilities			(32,366,000)
Total liabilities assumed			(407,505,000)
Net assets acquired			610,654,000
Business Acquisitions Purchase Price Allocation Losses And Loss Adjustment Expense			(25,238,000)
Business Acquisition Purchase Price Allocation Unearned Premium			(289,013,000)
Business Acquisition Purchase Price Allocation Reinsurance Recoverables			25,238,000
Business Acquisition Purchase Price Allocation Prepaid Reinsurance Premiums			289,013,000
Pacific Resources Benefits Advisors [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents			0
Business Acquisition Purchase Price Allocation Current Assets Prepaid Expenses And Other Assets			3,647,000
Fixed assets			53,000
Goodwill			76,023,000
Purchased customer accounts			38,111,000
Non-compete agreements			21,000
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets			0
Total assets acquired			117,855,000
Other current liabilities			(403,000)
Deferred Tax Liabilities, Net			0
Other liabilities			0
Total liabilities assumed			(403,000)
Net assets acquired			117,452,000
Business Acquisitions Purchase Price Allocation Losses And Loss Adjustment Expense			0
Business Acquisition Purchase Price Allocation Unearned Premium			0
Business Acquisition Purchase Price Allocation Reinsurance Recoverables			0
Business Acquisition Purchase Price Allocation Prepaid Reinsurance Premiums			0
Axia Strategies, Inc. [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents			0
Business Acquisition Purchase Price Allocation Current Assets Prepaid Expenses And Other Assets			101,000
Fixed assets			24,000
Goodwill			7,276,000
Purchased customer accounts			4,252,000
Non-compete agreements			41,000
Business Acquisitions Purchase Price Allocation Other Noncurrent Assets			0
Total assets acquired			11,694,000
Other current liabilities			0
Deferred Tax Liabilities, Net			0
Other liabilities			0
Total liabilities assumed			0
Net assets acquired			11,694,000
Business Acquisitions Purchase Price Allocation Losses And Loss Adjustment Expense			0
Business Acquisition Purchase Price Allocation Unearned Premium			0
Business Acquisition Purchase Price Allocation Reinsurance Recoverables			0
Business Acquisition Purchase Price Allocation Prepaid Reinsurance Premiums			0
Services
Fair Value Of Assets And Liabilities Statement [Line Items]
Goodwill	$ 22,400,000		(200,000)
Services \| Social Security Advocates for the Disabled LLC [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Effective Date of Acquisition	Feb. 01, 2016
Other Payable	$ 0
Payments to Acquire Businesses, Gross	32,526,000
Recorded Earn-Out Payable	971,000
Net assets acquired	33,989,000
Maximum Potential Earn- Out Payable	3,500,000
Retail
Fair Value Of Assets And Liabilities Statement [Line Items]
Goodwill	13,100,000	$ 113,800,000	$ 86,400,000
Retail \| Spain Agency, Inc. (Spain)
Fair Value Of Assets And Liabilities Statement [Line Items]
Effective Date of Acquisition		Mar. 01, 2015
Other Payable		$ 0
Payments to Acquire Businesses, Gross		20,706,000
Recorded Earn-Out Payable		2,617,000
Net assets acquired		23,323,000
Maximum Potential Earn- Out Payable		$ 9,162,000
Retail \| Fitness Insurance, LLC [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Effective Date of Acquisition		Jun. 01, 2015
Other Payable		$ 0
Payments to Acquire Businesses, Gross		9,455,000
Recorded Earn-Out Payable		2,379,000
Net assets acquired		11,834,000
Maximum Potential Earn- Out Payable		$ 3,500,000
Retail \| Other
Fair Value Of Assets And Liabilities Statement [Line Items]
Effective Date of Acquisition		Jun. 01, 2015
Other Payable		$ 400,000
Payments to Acquire Businesses, Gross		49,600,000
Recorded Earn-Out Payable		13,587,000
Net assets acquired		63,587,000
Maximum Potential Earn- Out Payable		$ 26,000,000
Retail \| Bentrust Financial, Inc. [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Effective Date of Acquisition		Dec. 01, 2015
Other Payable		$ 391,000
Payments to Acquire Businesses, Gross		10,142,000
Recorded Earn-Out Payable		319,000
Net assets acquired		10,852,000
Maximum Potential Earn- Out Payable		$ 2,200,000
Retail \| MBA Insurance Agency of Arizona, Inc. [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Effective Date of Acquisition		Dec. 01, 2015
Other Payable		$ 8,442,000
Payments to Acquire Businesses, Gross		68,000
Recorded Earn-Out Payable		6,063,000
Net assets acquired		14,573,000
Maximum Potential Earn- Out Payable		$ 9,500,000
Retail \| Smith Insurance, Inc. [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Effective Date of Acquisition		Dec. 01, 2015
Other Payable		$ 200,000
Payments to Acquire Businesses, Gross		12,096,000
Recorded Earn-Out Payable		1,047,000
Net assets acquired		13,343,000
Maximum Potential Earn- Out Payable		$ 6,350,000
Retail \| Liberty Insurance Brokers, Inc. and Affiliates [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Effective Date of Acquisition		Feb. 01, 2015
Other Payable		$ 0
Payments to Acquire Businesses, Gross		12,000,000
Recorded Earn-Out Payable		2,981,000
Net assets acquired		14,981,000
Maximum Potential Earn- Out Payable		3,750,000
Retail \| Pacific Resources Benefits Advisors [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Effective Date of Acquisition			May 01, 2014
Other Payable			$ 0
Payments to Acquire Businesses, Gross			90,000,000
Recorded Earn-Out Payable			27,452,000
Net assets acquired			117,452,000
Maximum Potential Earn- Out Payable			35,000,000
National Programs
Fair Value Of Assets And Liabilities Statement [Line Items]
Goodwill	57,900,000	$ 18,000,000	$ 420,000,000
National Programs \| Bellingham Underwriters, Inc. [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Effective Date of Acquisition		May 01, 2015
National Programs \| Wright Insurance Group Llc [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Effective Date of Acquisition			May 01, 2014
Other Payable			$ 1,471,000
Payments to Acquire Businesses, Gross			609,183,000
Recorded Earn-Out Payable			0
Net assets acquired			610,654,000
Maximum Potential Earn- Out Payable			0
Wholesale Brokerage
Fair Value Of Assets And Liabilities Statement [Line Items]
Goodwill	$ 0	$ 4,600,000	$ 7,700,000
Wholesale Brokerage \| Morstan General Agency, Inc [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Effective Date of Acquisition	Jun. 01, 2016
Other Payable	$ 10,200,000
Payments to Acquire Businesses, Gross	66,050,000
Recorded Earn-Out Payable	3,091,000
Net assets acquired	79,341,000
Maximum Potential Earn- Out Payable	$ 5,000,000
Wholesale Brokerage \| Axia Strategies, Inc. [Member]
Fair Value Of Assets And Liabilities Statement [Line Items]
Effective Date of Acquisition			May 01, 2014
Other Payable			$ 0
Payments to Acquire Businesses, Gross			9,870,000
Recorded Earn-Out Payable			1,824,000
Net assets acquired			11,694,000
Maximum Potential Earn- Out Payable			$ 5,200,000

Business Combinations - Results of Operations (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	$ 34,200	$ 28,200	$ 112,200
Business Combination Pro Forma Information Income Loss Before Income Taxes Of Acquiree Since Acquisition Date Actual	$ 4,300	1,500	(1,300)
Two Thousand Fourteen Acquisitions [Member]
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Total revenues			1,630,162	$ 1,520,858
Income before income taxes			358,229	409,522
Net income			$ 218,150	$ 248,628
Net income per share:
Basic (in dollars per share)			$ 1.51	$ 1.72
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax, Per Share, Diluted			$ 1.49	$ 1.70
Weighted Average Basic Shares Outstanding, Pro Forma			140,944	141,033
Weighted average number of shares outstanding:
Pro Forma Weighted Average Shares Outstanding, Diluted			142,891	142,624
Two Thousand Fifteen Acquisitions [Member]
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Total revenues		1,688,297	$ 1,630,992
Income before income taxes		411,497	356,426
Net income		$ 248,720	$ 217,053
Net income per share:
Basic (in dollars per share)		$ 1.76	$ 1.50
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax, Per Share, Diluted		$ 1.73	$ 1.48
Weighted Average Basic Shares Outstanding, Pro Forma		137,810	140,944
Weighted average number of shares outstanding:
Pro Forma Weighted Average Shares Outstanding, Diluted		140,112	142,891

Business Combinations - Additions, Payments, and Net Changes, as well as Interest Expense Accretion on Estimated Acquisition Earn-Out Payables (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Business Acquisition Cost- Note Payable	$ 492
Beginning balance	78,387	$ 75,283	$ 43,058
Additions to estimated acquisition earn-out payables	4,462	36,899	34,356
Payments for estimated acquisition earn-out payables	28,213	36,798	12,069
Subtotal	54,636	75,384	65,345
Net change in earnings from estimated acquisition earn-out payables:
Change in fair value on estimated acquisition earn-out payables	(6,338)	(13)	(7,375)
Interest expense accretion	2,847	2,990	2,563
Net change in earnings from estimated acquisition earn-out payables	9,185	3,003	9,938
Ending balance	63,821	$ 78,387	$ 75,283
Services \| Social Security Advocates for the Disabled LLC [Member]
Business Acquisition [Line Items]
Business Acquisition Cost- Note Payable	492
Wholesale Brokerage [Member] \| Morstan General Agency, Inc [Member]
Business Acquisition [Line Items]
Business Acquisition Cost- Note Payable	0
Various [Member] \| Other Acquisitions [Member]
Business Acquisition [Line Items]
Business Acquisition Cost- Note Payable	$ 0

Business Combinations Business Acquisitions - Pro-forma Table (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Two Thousand Sixteen Acquisition [Member]
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Weighted Average Basic Shares Outstanding, Pro Forma	136,139	137,810
Business Acquisition, Pro Forma Revenue	$ 1,789,790	$ 1,716,592
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax	428,194	414,911
Business Acquisition, Pro Forma Net Income (Loss)	$ 260,346	$ 250,783
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax, Per Share, Basic	$ 1.86	$ 1.78
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax, Per Share, Diluted	$ 1.84	$ 1.75
Pro Forma Weighted Average Shares Outstanding, Diluted	137,804	140,112
Two Thousand Fifteen Acquisitions [Member]
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Weighted Average Basic Shares Outstanding, Pro Forma		137,810	140,944
Business Acquisition, Pro Forma Revenue		$ 1,688,297	$ 1,630,992
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax		411,497	356,426
Business Acquisition, Pro Forma Net Income (Loss)		$ 248,720	$ 217,053
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax, Per Share, Basic		$ 1.76	$ 1.50
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax, Per Share, Diluted		$ 1.73	$ 1.48
Pro Forma Weighted Average Shares Outstanding, Diluted		140,112	142,891
Two Thousand Fourteen Acquisitions [Member]
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Weighted Average Basic Shares Outstanding, Pro Forma			140,944	141,033
Business Acquisition, Pro Forma Revenue			$ 1,630,162	$ 1,520,858
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax			358,229	409,522
Business Acquisition, Pro Forma Net Income (Loss)			$ 218,150	$ 248,628
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax, Per Share, Basic			$ 1.51	$ 1.72
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax, Per Share, Diluted			$ 1.49	$ 1.70
Pro Forma Weighted Average Shares Outstanding, Diluted			142,891	142,624

Goodwill - Changes in Carrying Value of Goodwill by Operating Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Goodwill [Roll Forward]
Beginning balance	$ 2,586,683	$ 2,460,611
Goodwill of acquired businesses	93,376	136,381
Goodwill, Transfers	0
Goodwill disposed of relating to sales of businesses	(4,657)	(10,309)
Ending balance	2,675,402	2,586,683
Retail
Goodwill [Roll Forward]
Beginning balance	1,345,636	1,231,869
Goodwill of acquired businesses	13,117	113,767
Goodwill, Transfers	571
Goodwill disposed of relating to sales of businesses	(4,657)	0
Ending balance	1,354,667	1,345,636
National Programs
Goodwill [Roll Forward]
Beginning balance	901,866	886,095
Goodwill of acquired businesses	(1)	18,009
Goodwill, Transfers	(571)
Goodwill disposed of relating to sales of businesses	0	(2,238)
Ending balance	901,294	901,866
Wholesale Brokerage
Goodwill [Roll Forward]
Beginning balance	226,961	222,356
Goodwill of acquired businesses	57,908	4,605
Goodwill, Transfers	0
Goodwill disposed of relating to sales of businesses	0	0
Ending balance	284,869	226,961
Services
Goodwill [Roll Forward]
Beginning balance	112,220	120,291
Goodwill of acquired businesses	22,352	0
Goodwill, Transfers	0
Goodwill disposed of relating to sales of businesses	0	(8,071)
Ending balance	$ 134,572	$ 112,220

Amortizable Intangible Assets - Amortizable Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 1,477,348	$ 1,428,426
Accumulated Amortization	(769,894)	(683,746)
Net Carrying Value	707,454	744,680
Purchased customer accounts
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	1,447,680	1,398,986
Accumulated Amortization	(741,770)	(656,799)
Net Carrying Value	$ 705,910	$ 742,187
Weighted Average Life (Years)	15 years	15 years
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 29,668	$ 29,440
Accumulated Amortization	(28,124)	(26,947)
Net Carrying Value	$ 1,544	$ 2,493
Weighted Average Life (Years)	6 years 9 months 18 days	6 years 9 months 18 days

Amortizable Intangible Assets - Additional Information (Detail) $ in Millions	Dec. 31, 2016 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense estimated, year one (2015)	$ 84.9
Amortization expense estimated, year two (2016)	79.6
Amortization expense estimated, year three (2017)	75.1
Amortization expense estimated, year four (2018)	67.8
Amortization expense estimated, year five (2019)	$ 64.5

Investments - Schedule of Investments in Fixed Maturity Securities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Proceeds from Sale, Maturity and Collection of Investments	$ 18,890	$ 21,928	$ 18,278
Cost	28,638	18,094
Gross Unrealized Gains	24	40
Gross Unrealized Losses	(60)	(42)
Fair Value	$ 28,602	$ 18,092
Available-for-sale Securities, Restrictions, Additional Information	insignificant	insignificant
Short-term Debt [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value	$ 5,600
Available-for-sale Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Restrictions, Additional Information	insignificant

Investments - Summary of Unrealized Loss Position (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	$ 28,638	$ 18,094
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	24	40
Fair Value, Less than 12 Months	15,664	11,779
Unrealized Losses, Less than 12 Months	(60)	(40)
Fair Value, 12 Months or More	0	284
Unrealized Losses, 12 Months or More	0	(2)
Fair Value	15,664	12,063
Unrealized Losses	(60)	(42)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(60)	(42)
Available-for-sale Securities	28,602	18,092
U.S. Treasury securities, obligations of U.S. Government agencies and Municipals
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	26,280	11,876
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	11	6
Fair Value, Less than 12 Months	14,663	8,998
Unrealized Losses, Less than 12 Months	(59)	(26)
Fair Value, 12 Months or More	0	0
Unrealized Losses, 12 Months or More	0	0
Fair Value	14,663	8,998
Unrealized Losses	(59)	(26)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(59)	(26)
Available-for-sale Securities	26,232	11,856
Foreign government
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis		50
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax		0
Fair Value, Less than 12 Months	0	50
Unrealized Losses, Less than 12 Months	0	0
Fair Value, 12 Months or More	0	0
Unrealized Losses, 12 Months or More	0	0
Fair Value	0	50
Unrealized Losses	0	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax		0
Available-for-sale Securities		50
Corporate debt
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	2,358	4,505
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	13	7
Fair Value, Less than 12 Months	1,001	2,731
Unrealized Losses, Less than 12 Months	(1)	(14)
Fair Value, 12 Months or More	0	284
Unrealized Losses, 12 Months or More	0	(2)
Fair Value	1,001	3,015
Unrealized Losses	(1)	(16)
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(1)	(16)
Available-for-sale Securities	$ 2,370	4,496
Short Duration Fixed Income Fund [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis		1,663
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax		27
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax		0
Available-for-sale Securities		$ 1,690

Investments - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) Securities	Dec. 31, 2015 USD ($) Securities
Schedule of Available-for-sale Securities [Line Items]
Short-term Investments	$ 15,048	$ 13,734
Number of securities in unrealized loss position \| Securities	20	35
Proceeds from sale of investment in fixed maturity securities	$ 6,000	$ 5,600
Money Market Funds, at Carrying Value	$ 9,100
Investment security maturity date, End	Dec. 31, 2015
Gross realized gains and losses of securities	insignificant	insignificant
Investments on deposit with the state insurance department	$ 4,000
Time Deposits	$ 9,500
Available-for-sale Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross realized gains and losses of securities	insignificant

Investments - Amortized Cost and Fair Value of Fixed Maturity Securities by Contractual Maturity (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Amortized Cost
Due in one year or less	$ 5,551	$ 5,726
Due after one year through five years	22,757	12,038
Due after five years through ten years	330	330
Amortized Cost, Total	28,638	18,094
Fair Value
Due in one year or less	5,554	5,722
Due after one year through five years	22,708	12,041
Due after five years through ten years	340	329
Fair Value, Total	$ 28,602	$ 18,092

Fixed Assets (Details) - USD ($) $ in Thousands	12 Months Ended
Fixed Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Depreciation	$ 21,003	$ 20,890	$ 20,895
Property, Plant and Equipment, Gross	214,335	205,184
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(138,528)	(123,431)
Property, Plant and Equipment, Net	75,807	81,753
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	177,823	169,682
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	33,137	32,132
Land, Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 3,375	$ 3,370

Long-Term Debt - Long-Term Debt Instrument (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 22, 2016	Apr. 16, 2014
Debt Instrument [Line Items]
Total current portion of long-term debt	$ 55,500,000	$ 73,125,000
Total notes	598,785,000	598,628,000
Long-term credit agreements	426,250,000	481,250,000		$ 25,000,000.0
Debt Issuance Costs, Net	(6,663,000)	(8,260,000)
Total long-term debt	1,018,372,000	1,071,618,000
Current portion of long-term debt	55,500,000	73,125,000
Total debt	1,073,872,000	1,144,743,000
Increase (Decrease) in Notes Payable, Current	500,000	0
5.370% senior notes, Series D, quarterly interest payments, balloon due 2015
Debt Instrument [Line Items]
Current portion of senior notes			$ 25,000,000
5.660% senior notes, Series C, semi-annual interest payments, balloon due 2016
Debt Instrument [Line Items]
Current portion of senior notes	0	25,000,000
4.500% senior notes, Series E, quarterly interest payments, balloon due 2018
Debt Instrument [Line Items]
Total notes	100,000,000	100,000,000
4.200% senior notes, semi-annual interest payments, balloon due 2024
Debt Instrument [Line Items]
Total notes	498,785,000	498,628,000
5-year term loan facility, periodic interest and principal payments, LIBOR plus up to 1.750%, expires May 20, 2019
Debt Instrument [Line Items]
Current portion of loan facility	55,000,000	48,125,000
Long-term credit agreements	426,250,000	481,250,000
5-year revolving loan facility, periodic interest payments, currently LIBOR plus up to 1.500%, plus commitment fees up to 0.250%, expires May 20, 2019
Debt Instrument [Line Items]
Long-term credit agreements	0	0
Revolving credit loan, quarterly interest payments, LIBOR plus up to 1.400% and availability fee up to 0.250%, expires December 31, 2016
Debt Instrument [Line Items]
Long-term credit agreements	$ 0	$ 0

Long-Term Debt - Long-Term Debt Instrument (Additional Information) (Detail)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
5.660% senior notes, Series C, semi-annual interest payments, balloon due 2016
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.66%	5.66%
Debt instrument maturity year	2016	2016
4.500% senior notes, Series E, quarterly interest payments, balloon due 2018
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4.50%	4.50%
Debt instrument maturity year	2018	2018
4.200% senior notes, semi-annual interest payments, balloon due 2024
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4.20%	4.20%
Debt instrument maturity year	2024	2024
5-year term loan facility, periodic interest and principal payments, LIBOR plus up to 1.750%, expires May 20, 2019
Debt Instrument [Line Items]
Line of credit facility, expiration period	5 years	5 years
Line of credit facility, expiration date	May 20, 2019	May 20, 2019
5-year term loan facility, periodic interest and principal payments, LIBOR plus up to 1.750%, expires May 20, 2019 \| LIBOR
Debt Instrument [Line Items]
Debt instrument, variable interest rate	1.75%	1.75%
5-year revolving loan facility, periodic interest payments, currently LIBOR plus up to 1.500%, plus commitment fees up to 0.250%, expires May 20, 2019
Debt Instrument [Line Items]
Line of credit facility, expiration period	5 years	5 years
Line of credit facility, commitment fee percentage	0.25%	0.25%
Line of credit facility, expiration date	May 20, 2019	May 20, 2019
5-year revolving loan facility, periodic interest payments, currently LIBOR plus up to 1.500%, plus commitment fees up to 0.250%, expires May 20, 2019 \| LIBOR
Debt Instrument [Line Items]
Debt instrument, variable interest rate	1.50%	1.50%
Revolving credit loan, quarterly interest payments, LIBOR plus up to 1.400% and availability fee up to 0.250%, expires December 31, 2016
Debt Instrument [Line Items]
Line of credit facility, expiration date	Dec. 31, 2016	Dec. 31, 2016
Maximum \| Revolving credit loan, quarterly interest payments, LIBOR plus up to 1.400% and availability fee up to 0.250%, expires December 31, 2016
Debt Instrument [Line Items]
Line of credit facility, commitment fee percentage	0.25%	0.25%
Maximum \| Revolving credit loan, quarterly interest payments, LIBOR plus up to 1.400% and availability fee up to 0.250%, expires December 31, 2016 \| LIBOR
Debt Instrument [Line Items]
Debt instrument, variable interest rate	1.40%	1.40%

Long-Term Debt - Narrative (Detail)			12 Months Ended
Long-Term Debt - Narrative (Detail)	Sep. 18, 2014 USD ($)	May 20, 2014 USD ($) extension	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 22, 2016 USD ($)	Jan. 15, 2015 USD ($)	Apr. 17, 2014 USD ($)	Apr. 16, 2014 USD ($)	Apr. 15, 2014 USD ($)	Jul. 01, 2013 USD ($)	Sep. 15, 2011 USD ($)	Feb. 01, 2008 USD ($)	Dec. 22, 2006 USD ($)
Debt Instrument [Line Items]
Credit facility, outstanding amount			$ 426,250,000	$ 481,250,000					$ 25,000,000.0
Revolving and term loan			481,300,000
Potential increased in line of credit facility								$ 500,000,000.0
Unsecured revolving credit facility								800,000,000.0
Unsecured term loans								550,000,000.0
Proceeds from lines of credit			0	0	$ 475,000,000
Outstanding debt balance			1,073,872,000	1,144,743,000
Senior Notes Due Two Thousand Sixteen [Member]
Debt Instrument [Line Items]
Current portion of senior notes							$ 25,000,000
5.370% senior notes, Series D, quarterly interest payments, balloon due 2015
Debt Instrument [Line Items]
Current portion of senior notes						$ 25,000,000
Credit Agreement
Debt Instrument [Line Items]
Credit facility, outstanding amount			481,300,000	529,400,000
Number of extension periods \| extension		2
Extension period		1 year
Unsecured revolving credit facility								$ 1,350,000,000.0
Unsecured Senior Notes
Debt Instrument [Line Items]
Debt instrument interest rate stated percentage	4.20%
Debt instrument, face amount	$ 500,000,000.0
Debt instrument maturity year	2024
Outstanding debt balance			500,000,000
Wells Fargo [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Remaining Borrowing Capacity			$ 0
Debt instrument, maturity date			Dec. 31, 2016
Potential increased in line of credit facility			$ 75,000,000.0
Unsecured revolving credit facility			800,000,000	800,000,000
Wells Fargo [Member] \| Beecher Acquisition
Debt Instrument [Line Items]
Credit facility, outstanding amount										$ 50,000,000.0	$ 50,000,000.0
Wells Fargo [Member]
Debt Instrument [Line Items]
Line of Credit Facility Increase in Borrowing Capacity			$ 50,000,000
Line of Credit \| Wells Fargo [Member]
Debt Instrument [Line Items]
Letter of credit usage fee, minimum			1.00%
Letter of credit usage fee, maximum			1.40%
LIBOR below base rate			1.00%
Availability fees, minimum			0.175%
Availability fees, maximum			0.25%
Term Loan
Debt Instrument [Line Items]
Credit facility, outstanding amount		$ 550,000,000.0
Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility, outstanding amount	$ 475,000,000	$ 375,000,000
Proceeds from lines of credit			$ 0	0
Uncommitted Facility \| New Master Agreement
Debt Instrument [Line Items]
Credit facility, outstanding amount				0
Master Agreement
Debt Instrument [Line Items]
Unsecured senior notes outstanding			100,000,000
Master Agreement \| Series C
Debt Instrument [Line Items]
Unsecured senior notes outstanding													$ 25,000,000.0	$ 25,000,000.0
Debt instrument interest rate stated percentage														5.66%
Master Agreement \| Series D
Debt Instrument [Line Items]
Debt instrument interest rate stated percentage													5.37%
Master Agreement \| Series E
Debt Instrument [Line Items]
Unsecured senior notes outstanding												$ 100,000,000.0
Debt instrument interest rate stated percentage												4.50%
New Master Agreement
Debt Instrument [Line Items]
Unsecured senior notes outstanding			$ 1,073,872,000	$ 1,144,743,000
LIBOR
Debt Instrument [Line Items]
30-day Adjusted LIBOR Rate			0.81%
Minimum \| Revolving Credit Facility
Debt Instrument [Line Items]
Facility fee			0.15%
Minimum \| LIBOR \| Term Loan
Debt Instrument [Line Items]
Debt instrument, variable interest rate			1.00%
Minimum \| LIBOR \| Line of Credit \| Wells Fargo [Member]
Debt Instrument [Line Items]
Debt instrument, variable interest rate			1.00%
Minimum \| LIBOR \| Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, variable interest rate			0.85%
Maximum \| Revolving Credit Facility
Debt Instrument [Line Items]
Facility fee			0.25%
Maximum \| LIBOR \| Term Loan
Debt Instrument [Line Items]
Debt instrument, variable interest rate			1.75%
Maximum \| LIBOR \| Line of Credit \| Wells Fargo [Member]
Debt Instrument [Line Items]
Debt instrument, variable interest rate			1.40%
Maximum \| LIBOR \| Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, variable interest rate			1.50%

Long-Term Debt Details (Details) - USD ($) $ in Thousands	12 Months Ended
Long-Term Debt Details (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Debt Disclosure [Abstract]
Interest	$ 37,652	$ 37,542	$ 25,115
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	55,500
Long-term Debt, Maturities, Repayments of Principal in Year Two	155,000
Long-term Debt, Maturities, Repayments of Principal in Year Three	371,300
Long-term Debt, Maturities, Repayments of Principal in Year Four	$ 500,000

Income Taxes (Details) - USD ($)	12 Months Ended
Income Taxes (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2012
Income Tax Contingency [Line Items]
Liability for Uncertain Tax Positions, Current	$ 86,191	$ 102,171
Income Taxes Paid	143,111,000	132,874,000	$ 118,290,000
Unrecognized Tax Benefits	750,258	583,977	$ 113,000	$ 391,000
Deferred Tax Liabilities, Property, Plant and Equipment	6,425,000	8,585,000
deferred profit sharing contingent commissions	$ 10,567,000	$ 9,767,000
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	35.00%	35.00%	35.00%
Current Federal Tax Expense (Benefit)	$ 126,145,000	$ 118,490,000	$ 109,893,000
Current State and Local Tax Expense (Benefit)	21,110,000	17,625,000	15,482,000
Current Foreign Tax Expense (Benefit)	590,000	430,000	109,000
Current Income Tax Expense (Benefit)	147,845,000	136,545,000	125,484,000
Deferred Federal Income Tax Expense (Benefit)	15,551,000	18,416,000	5,987,000
Deferred State and Local Income Tax Expense (Benefit)	2,612,000	4,280,000	1,440,000
Deferred Foreign Income Tax Expense (Benefit)	$ 0	0	(58,000)
Deferred Foreign Income Tax Expense (Benefit)	2566000
Summary of Income Tax Contingencies [Table Text Block]	$ 18,163,000	22,696,000	7,369,000
Income Tax Expense (Benefit)	$ 166,008,000	$ 159,241,000	$ 132,853,000
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent	3.90%	3.90%	3.30%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Percent	0.30%	0.30%	0.30%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Meals and Entertainment, Percent	0.30%	0.30%	0.40%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent	(0.30%)	0.10%	0.10%
Effective Income Tax Rate Reconciliation, Percent	39.20%	39.60%	39.10%
Deferred Tax Assets Operating Loss Carryforwards Current	$ 10,000	$ 10,000
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals	14,032,000	14,858,000
Deferred Tax Assets, Net, Current	24,609,000	24,635,000
Net Unrealized Holding Gain on Available for Sale Securities	(12,000)	(9,000)
Deferred Tax Liabilities, Goodwill and Intangible Assets	422,478,000	393,251,000
Non Current Deferred Tax Liability	428,891,000	401,827,000
Deferred income taxes, net	382,295,000	360,949,000
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation	44,912,000	38,966,000
Deferred Tax Assets, Operating Loss Carryforwards	2,384,000	2,518,000
Deferred Tax Assets, Valuation Allowance	(700,000)	(606,000)
Deferred Tax Assets, Net, Noncurrent	46,596,000	40,878,000
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	412,000	773,000	$ 0
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	(41,000)	0	(21,000)
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	(205,000)	$ (302,000)	$ (257,000)
Operating Loss Carryforwards	156,435
Operating Loss Carryforwards State	$ 60,183,125
Operating Loss Carryforwards, Expiration Date	2036

Employee Savings Plan (Details) - USD ($)	12 Months Ended
Employee Savings Plan (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Employee Savings Plan [Abstract]
Compensation and Employee Benefit Plans [Text Block]	Employee Savings Plan The Company has an Employee Savings Plan (401(k)) in which substantially all employees with more than 30 days of service are eligible to participate. Under this plan, Brown & Brown makes matching contributions of up to 4.0% of each participant’s annual compensation. Prior to 2014, the Company’s matching contribution was up to 2.5% of each participant’s annual compensation with a discretionary profit-sharing contribution each year, which equaled 1.5% of each eligible employee’s compensation. The Company’s contributions to the plan totaled $19.3 million in 2016, $17.8 million in 2015, and $15.8 million in 2014.
Service Period Eligible to Participate for Employee Savings Plan	$ 30
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	4.00%		2.50%
Discretionary Profit Sharing Contribution Percentage of Employees Salary	1.50%
Defined Benefit Plan, Contributions by Employer	$ 19,300,000	$ 17,800,000	$ 15,800,000

Stock Based Compensation (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended			12 Months Ended
	Jan. 31, 2012	Jan. 31, 2011	Jul. 31, 2009	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Apr. 28, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price				$ 18.48	$ 18.48	$ 18.57	$ 18.39
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number				175,000	269,589	470,356	622,945
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term				1 year 2 months	2 years 2 months	3 years 1 month	4 years 1 month
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number				175,000	164,589	316,356
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period				0	0	0
MaximumNumberOfSharesAvailableToBeGrantedUnderAwardStockPlan				14,400,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross				5,174,190				0
Stock Issued During Period, Shares, Share-based Compensation, Gross								12,610
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant				0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value				$ 18.1	$ 6.8	$ 8.4
IncrementalIncreasesInAverageStockPriceFromInitialGrantPrice				20.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period			20 years	15 years
AttainmentAgeOfStockPlan				attainment of age 64
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardedSharesOutstandingNumber				1,003,275
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDistributedSharesOutstandingNumber				4,170,915
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit				$ 13.65
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit				$ 25.68
PerformanceStockPlan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodAwardedShares				506,422	208,889	277,009
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period				(92,517)	(117,528)	(165,647)
ShareBasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardedInPeriod				4,000	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period				0	0	0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodPriorYearAwardsIssuedGrantedInCurrentYear				0	0	0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsNotYetAwardedInPeriod				0	0	0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardedInPeriodWeightedAverageGrantDateFairValue				0	0	0.00
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNotYetAwardedInPeriod				(4,000)	0	0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageGrantDateFairValue				10.23	9.03	8.71	8.62
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value				$ 6.39	$ 5.55	$ 16.76
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period				(506,422)	(208,889)	(277,009)
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodAwardedShares				(88,517)	(100,110)	(115,630)
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodNotYetAwardedShares				(4,000)	(17,418)	(50,017)
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodSharesNotAwarded				0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value				$ 10.52	$ 9.78	$ 9.75
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedSharesOutstandingNumber				1,003,275	1,602,214	1,928,631	2,371,287
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesNotYetAwardedOutstandingNumber				0	8,000	25,418	75,435
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value				$ 0	$ 0	$ 0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardedSharesOutstandingNumber				1,003,275	1,594,214	1,903,213	2,295,852
Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodAwardedShares				(166,884)	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period				(954,131)	(863,241)	(369,626)
ShareBasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardedInPeriod				1,431,319	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period				972,099	481,166	422,572
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodPriorYearAwardsIssuedGrantedInCurrentYear				182,653	164,646	113,088
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsNotYetAwardedInPeriod				789,446	316,520	309,484
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardedInPeriodWeightedAverageGrantDateFairValue				25	0	0.00
ShareBasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsGrantedSharesAwardedInPeriod				0		0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNotYetAwardedInPeriod				(1,431,319)	0	0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageGrantDateFairValue				29.96	28.74	28.19		27.96
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodUnderIncentiveSubPlan									2,375,892
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross				972,099	481,166	422,572	3,719,974			187,040
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares				182,653	164,646	113,088	891,399
Stock Issued During Period, Shares, Share-based Compensation, Gross	12,627	11,682		16,860	15,700	9,870			36,919
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant				3,729,566
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value				$ 27	$ 0	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period				(166,884)	0	0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodAwardedShares				(175,788)	(95,542)	(47,915)
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodNotYetAwardedShares				(778,343)	(767,699)	(321,711)
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodSharesNotAwarded				0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value				$ 25.34	$ 26.32	$ 27.41
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedSharesOutstandingNumber				6,128,056	6,276,972	6,659,047		6,606,101
SharesAvailableForIssuanceUnderStockIncentivePlan											6,046,768
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesNotYetAwardedOutstandingNumber				3,726,762	5,146,978	5,598,157		5,610,384
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value				$ 35.52	$ 32	$ 31.02
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardedSharesOutstandingNumber				2,401,294	1,129,994	1,060,890		995,717
Stock Incentive Plan [Member] \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestingPeriod				5 years	5 years	3 years	3 years
Stock Incentive Plan [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestingPeriod					7 years	6 years	7 years
DecusInsuranceBrokersLimited [Member] \| Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodUnderIncentiveSubPlan									24,670	5,205
Arrowhead General Insurance Agency, Inc. [Member] \| Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross								814,545
Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized				17,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant				4,680,263
EighteenPointFourEightExercisePrice [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price				$ 18.48
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number				175,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term				1 year 2 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number				175,000

Stock Based Compensation Summary of PSP Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardedSharesOutstandingNumber	1,003,275
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	0	0	0
Stock Incentive Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares	182,653	164,646	113,088	891,399
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageGrantDateFairValue	29.96	28.74	28.19		27.96
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedSharesOutstandingNumber	6,128,056	6,276,972	6,659,047		6,606,101
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardedSharesOutstandingNumber	2,401,294	1,129,994	1,060,890		995,717
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesNotYetAwardedOutstandingNumber	3,726,762	5,146,978	5,598,157		5,610,384
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 35.52	$ 32	$ 31.02
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	972,099	481,166	422,572
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodPriorYearAwardsIssuedGrantedInCurrentYear	182,653	164,646	113,088
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsNotYetAwardedInPeriod	789,446	316,520	309,484
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardedInPeriodWeightedAverageGrantDateFairValue	25	0	0.00
ShareBasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsGrantedSharesAwardedInPeriod	0		0
ShareBasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardedInPeriod	1,431,319	0	0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNotYetAwardedInPeriod	(1,431,319)	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	$ 27	$ 0	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	166,884	0	0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodAwardedShares	166,884	0	0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodSharesNotAwarded	0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value	$ 25.34	$ 26.32	$ 27.41
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	(954,131)	(863,241)	(369,626)
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodAwardedShares	(175,788)	(95,542)	(47,915)
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodNotYetAwardedShares	(778,343)	(767,699)	(321,711)
Time-Based [Member] \| Stock Incentive Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares	182,653	164,646	113,088
Perfomance Based [Member] \| Stock Incentive Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsNotYetAwardedInPeriod	789,446	316,520	309,484
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNotYetAwardedInPeriod	1,435,319	0	0

Stock Based Compensation Stock Incentive Plan (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2010	Apr. 21, 2000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 18.48	$ 18.48	$ 18.48
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	5,174,190				0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	0	0	0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardedSharesOutstandingNumber	1,003,275
PerformanceStockPlan [Member]
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageGrantDateFairValue	10.23	9.03	8.71	8.62
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 0	$ 0	$ 0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardedInPeriodWeightedAverageGrantDateFairValue	0	0	0.00
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	$ 6.39	$ 5.55	$ 16.76
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value	$ 10.52	$ 9.78	$ 9.75
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedSharesOutstandingNumber	1,003,275	1,602,214	1,928,631	2,371,287
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	0	0	0
ShareBasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardedInPeriod	4,000	0	0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNotYetAwardedInPeriod	(4,000)	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	506,422	208,889	277,009
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	(92,517)	(117,528)	(165,647)
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardedSharesOutstandingNumber	1,003,275	1,594,214	1,903,213	2,295,852
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodPriorYearAwardsIssuedGrantedInCurrentYear	0	0	0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodAwardedShares	(506,422)	(208,889)	(277,009)
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodAwardedShares	(88,517)	(100,110)	(115,630)
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesNotYetAwardedOutstandingNumber	0	8,000	25,418	75,435
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsNotYetAwardedInPeriod	0	0	0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodSharesNotAwarded	0	0	0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodNotYetAwardedShares	(4,000)	(17,418)	(50,017)
Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	972,099	481,166	422,572	3,719,974		187,040
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageGrantDateFairValue	29.96	28.74	28.19		27.96
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 35.52	$ 32	$ 31.02
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardedInPeriodWeightedAverageGrantDateFairValue	25	0	0.00
ShareBasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsGrantedSharesAwardedInPeriod	0		0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	$ 27	$ 0	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value	$ 25.34	$ 26.32	$ 27.41
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedSharesOutstandingNumber	6,128,056	6,276,972	6,659,047		6,606,101
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	972,099	481,166	422,572
ShareBasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardedInPeriod	1,431,319	0	0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNotYetAwardedInPeriod	(1,431,319)	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	166,884	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	(954,131)	(863,241)	(369,626)
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardedSharesOutstandingNumber	2,401,294	1,129,994	1,060,890		995,717
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodPriorYearAwardsIssuedGrantedInCurrentYear	182,653	164,646	113,088
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodAwardedShares	166,884	0	0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodAwardedShares	(175,788)	(95,542)	(47,915)
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesNotYetAwardedOutstandingNumber	3,726,762	5,146,978	5,598,157		5,610,384
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsNotYetAwardedInPeriod	789,446	316,520	309,484
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodSharesNotAwarded	0	0	0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodNotYetAwardedShares	(778,343)	(767,699)	(321,711)
Incentive Stock Option Plan [Member] \| Maximum [Member]
Shares held in Employee Stock Option Plan, Suspense Shares							4,800,000
EighteenPointFourEightExercisePrice [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 18.48

Stock Based Compensation Non Cash Stock Based Compensation Expense (Details) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]

The non-cash stock-based compensation expense for the years ended December 31 is as follows:



(in thousands)	2016		2015		2014
Stock Incentive Plan	$	11,049	$	11,111	$	14,447
Employee Stock Purchase Plan	3,698		3,430		2,425
Performance Stock Plan	1,305		972		2,354
Incentive Stock Option Plan	—		—		137
Total	$	16,052	$	15,513	$	19,363

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share-based Compensation

$ 16,052

$ 15,513

$ 19,363

Stock Incentive Plan [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share-based Compensation

11,049

11,111

14,447

PerformanceStockPlan [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share-based Compensation

1,305

972

2,354

Incentive Stock Option Plan [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share-based Compensation

137

Employee Stock [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share-based Compensation

$ 3,698

$ 3,430

$ 2,425

Stock Based Compensation Share Based Compensation Shares Authorized under Stock Option Plans, Exercise Price Range (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	175,000	269,589	470,356	622,945
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	1 year 2 months	2 years 2 months	3 years 1 month	4 years 1 month
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 18.48	$ 18.48	$ 18.57	$ 18.39
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	175,000	164,589	316,356
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 18.48	$ 18.48	$ 18.48
EighteenPointFourEightExercisePrice [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Investment Options, Exercise Price	$ 18.48
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	175,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	1 year 2 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 18.48
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	175,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 18.48
PerformanceStockPlan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageGrantDateFairValue	10.23	9.03	8.71	8.62

Stock Based Compensation Summary of Stock Options (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	175,000	269,589	470,356	622,945
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 18.48	$ 18.48	$ 18.57	$ 18.39
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	1 year 2 months	2 years 2 months	3 years 1 month	4 years 1 month
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	$ 4,616	$ 2,395	$ 5,087	$ 7,289
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	0	0	0
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 0	$ 0	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	64,589	151,767	106,589
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price	$ 18.48	$ 18.48	$ 18.48
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period	30,000	49,000	46,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price	$ 18.48	$ 19.36	$ 18
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period	0	0	0
Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price	$ 0	$ 0	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number	175,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price	$ 18.48
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term	1 year 2 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value	$ 4,616
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	175,000	164,589	316,356
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 18.48	$ 18.48	$ 18.48
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term	1 year 2 months	2 years 2 months	3 years 2 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	$ 4,616	$ 2,241	$ 4,565
EighteenPointFourEightExercisePrice [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Investment Options, Exercise Price	$ 18.48
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	175,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 18.48
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	1 year 2 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	175,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 18.48
Stock Incentive Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNotYetAwardedInPeriod	(1,431,319)	0	0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodPriorYearAwardsIssuedGrantedInCurrentYear	182,653	164,646	113,088
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	972,099	481,166	422,572

Stock Based Compensation Employee Stock Purchase Plan Details (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Aug. 31, 2015	Jul. 31, 2015	Dec. 31, 2014	Aug. 31, 2014	Jul. 31, 2014	Aug. 31, 2013	Jul. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	0
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate	10.00%
Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	3,729,566
Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	4,680,263
ThresholdPeriodWorkedPerWeekByEmployees	20
AllottedValueMaximum	$ 25,000
ShareBasedCompensationArrangementByShareBasedPaymentAwardSubscriptionPeriodBeginning	August 1
ShareBasedCompensationArrangementByShareBasedPaymentAwardSubscriptionPeriodEnding	July 31
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent	85.00%
ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentOfMarketPrice	15.00%
ValueOfOneYearStockOptionPercentage	85.00%
EstimatedFairValuePerShareOption			$ 7.61			$ 6.43		$ 6.39
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period				514,665			539,389		512,521
ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedAggregatePurchaseValue				$ 15,000,000			$ 14,400,000		$ 13,400,000
ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedAggregatePurchasePricePerShare				$ 29.23			$ 26.62		$ 26.16
Shares held in Employee Stock Option Plan, Suspense Shares	247,023	231,803			235,794
CashReceivedFromProceedsByParticipants	$ 7,700,000	$ 6,800,000			$ 6,300,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	17,000,000

Stock Based Compensation Incentive Stock Option Plan (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Apr. 21, 2000
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	$ 1.0	$ 2.2	$ 1.3
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	0
PerformanceStockPlan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNotYetAwardedInPeriod	(4,000)	0	0
Incentive Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
PercentageOfPreTaxIncome	15.00%
Incentive Stock Option Plan [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestingPeriod	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	6 years
Shares held in Employee Stock Option Plan, Suspense Shares				4,800,000
Incentive Stock Option Plan [Member] \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestingPeriod	1 year
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years

Stock Based Compensation Unrecognized Compensation Costs (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($)
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 92.1
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	4 years 4 months

Stock Based Compensation Schedule of compensation cost for share-based payment arrangements, allocation of share-based compensation costs by plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation	$ 16,052	$ 15,513	$ 19,363
Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation	11,049	11,111	14,447
PerformanceStockPlan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation	1,305	972	2,354
Incentive Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation	$ 0	$ 0	$ 137

Stock Based Compensation Schedule of Share Based Compensation, Stock Options Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		12 Months Ended
	Jan. 31, 2012	Jan. 31, 2011	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Apr. 28, 2010
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			5,174,190				0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardedSharesOutstandingNumber			1,003,275
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number			175,000	269,589	470,356	622,945
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price			$ 18.48	$ 18.48	$ 18.57	$ 18.39
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term			1 year 2 months	2 years 2 months	3 years 1 month	4 years 1 month
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value			$ 4,616	$ 2,395	$ 5,087	$ 7,289
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			0	0	0
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price			$ 0	$ 0	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period			(64,589)	(151,767)	(106,589)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price			$ 18.48	$ 18.48	$ 18.48
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period			(30,000)	(49,000)	(46,000)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price			$ 18.48	$ 19.36	$ 18
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period			0	0	0
Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price			$ 0	$ 0	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number			175,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price			$ 18.48
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term			1 year 2 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value			$ 4,616
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number			175,000	164,589	316,356
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price			$ 18.48	$ 18.48	$ 18.48
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term			1 year 2 months	2 years 2 months	3 years 2 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value			$ 4,616	$ 2,241	$ 4,565
Stock Issued During Period, Shares, Share-based Compensation, Gross							12,610
Stock Incentive Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNotYetAwardedInPeriod			(1,431,319)	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			972,099	481,166	422,572	3,719,974			187,040
SharesAvailableForIssuanceUnderStockIncentivePlan										6,046,768
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedSharesOutstandingNumber			6,128,056	6,276,972	6,659,047		6,606,101
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 35.52	$ 32	$ 31.02
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardedSharesOutstandingNumber			2,401,294	1,129,994	1,060,890		995,717
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesNotYetAwardedOutstandingNumber			3,726,762	5,146,978	5,598,157		5,610,384
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			972,099	481,166	422,572
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares			182,653	164,646	113,088	891,399
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsNotYetAwardedInPeriod			789,446	316,520	309,484
Stock Issued During Period, Shares, Share-based Compensation, Gross	12,627	11,682	16,860	15,700	9,870			36,919
PerformanceStockPlan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNotYetAwardedInPeriod			(4,000)	0	0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedSharesOutstandingNumber			1,003,275	1,602,214	1,928,631	2,371,287
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 0	$ 0	$ 0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardedSharesOutstandingNumber			1,003,275	1,594,214	1,903,213	2,295,852
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesNotYetAwardedOutstandingNumber			0	8,000	25,418	75,435
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			0	0	0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsNotYetAwardedInPeriod			0	0	0
Minimum [Member] \| Stock Incentive Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestingPeriod			5 years	5 years	3 years	3 years
Perfomance Based [Member] \| Stock Incentive Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNotYetAwardedInPeriod			1,435,319	0	0
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsNotYetAwardedInPeriod			789,446	316,520	309,484

Supplemental Disclosures of Cash Flow Information and Non-Cash Financing and Investing Activities - Significant Non-Cash Investing and Financing Activities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Supplemental Cash Flow Elements [Abstract]
Change in Cash and Cash Equivalents due to reclass from Restricted Cash		$ 33,000	$ 32,200
Cash paid during the period for:
Interest	$ 37,652	37,542	25,115
Income taxes	143,111	132,874	118,290
Significant non-cash investing and financing activities
Other payables issued for purchased customer accounts	10,664	10,029	1,930
Estimated acquisition earn-out payables and related charges	4,463	36,899	33,229
Notes Assumed	492	0	0
Notes received on the sale of fixed assets and customer accounts	$ 22	$ 7,755	$ 6,340

Commitments and Contingencies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Operating Leases, Rent Expense	$ 49,300	$ 46,000	$ 49,000
Operating Leases, Future Minimum Payments Due, Next Twelve Months	42,727
Operating Leases, Future Minimum Payments, Due in Two Years	39,505
Operating Leases, Future Minimum Payments, Due in Three Years	34,277
Operating Leases, Future Minimum Payments, Due in Four Years	29,393
Operating Leases, Future Minimum Payments, Due in Five Years	22,222
Operating Leases, Future Minimum Payments, Due Thereafter	45,036
Operating Leases, Future Minimum Payments Due	$ 213,160

Quarterly Operating Results (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Total revenues	$ 433,664	$ 462,274	$ 446,518	$ 424,173	$ 404,597	$ 432,167	$ 419,447	$ 404,298	$ 1,766,629	$ 1,660,509	$ 1,575,796
Operating Expenses	338,763	345,302	337,441	321,624	309,560	319,337	318,533	310,520	1,343,130	1,257,950	1,236,047
Income before income taxes	94,901	116,972	109,077	102,549	95,037	112,830	100,914	93,778	423,499	402,559	339,749
Net Income (Loss) Attributable to Parent	$ 57,626	$ 71,545	$ 66,250	$ 62,070	$ 57,935	$ 67,427	$ 61,005	$ 56,951	$ 257,491	$ 243,318	$ 206,896
Earnings Per Share, Basic	$ 0.0041	$ 0.0051	$ 0.0047	$ 0.0045	$ 0.0041	$ 0.0048	$ 0.0043	$ 0.0040	$ 1.84	$ 1.72	$ 1.43
Diluted (in dollars per share)	$ 0.0041	$ 0.0050	$ 0.0047	$ 0.0044	$ 0.0041	$ 0.0047	$ 0.0043	$ 0.0039	$ 1.82	$ 1.70	$ 1.41

Segment Information - Additional Information (Detail) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2016 USD ($) Segment	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| Segment									4
Total revenues	$ 433,664	$ 462,274	$ 446,518	$ 424,173	$ 404,597	$ 432,167	$ 419,447	$ 404,298	$ 1,766,629	$ 1,660,509	$ 1,575,796
London, Bermuda and Cayman Islands
Segment Reporting Information [Line Items]
Total revenues									$ 14,500	$ 13,400	$ 13,300

Segment Information - Summarized Financial Information Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Total revenues	$ 433,664	$ 462,274	$ 446,518	$ 424,173	$ 404,597	$ 432,167	$ 419,447	$ 404,298	$ 1,766,629	$ 1,660,509	$ 1,575,796
Investment income									1,456	1,004	747
Amortization									86,663	87,421	82,941
Depreciation									21,003	20,890	20,895
Interest expense									39,481	39,248	28,408
Income before income taxes	94,901	$ 116,972	$ 109,077	$ 102,549	95,037	$ 112,830	$ 100,914	$ 93,778	423,499	402,559	339,749
Total assets	5,287,343				5,004,479				5,287,343	5,004,479	4,946,560
Capital expenditures									17,765	18,375	24,923
Operating Segments \| Retail
Segment Reporting Information [Line Items]
Total revenues									917,406	870,346	823,686
Investment income									37	87	67
Amortization									43,447	45,145	42,935
Depreciation									6,191	6,558	6,449
Interest expense									38,216	41,036	43,502
Income before income taxes									188,001	181,938	157,491
Total assets	3,854,393				3,507,476				3,854,393	3,507,476	3,229,484
Capital expenditures									5,951	6,797	6,873
Operating Segments \| National Programs
Segment Reporting Information [Line Items]
Total revenues									448,516	428,734	404,239
Investment income									628	210	164
Amortization									27,920	28,479	25,129
Depreciation									7,868	7,250	7,805
Interest expense									45,738	55,705	49,663
Income before income taxes									91,762	67,673	73,178
Total assets	2,711,378				2,505,752				2,711,378	2,505,752	2,455,749
Capital expenditures									6,977	6,001	14,133
Operating Segments \| Wholesale Brokerage
Segment Reporting Information [Line Items]
Total revenues									243,103	216,996	211,911
Investment income									4	150	26
Amortization									10,801	9,739	10,703
Depreciation									1,975	2,142	2,470
Interest expense									3,976	891	1,294
Income before income taxes									62,623	64,708	8,276
Total assets	1,108,829				895,782				1,108,829	895,782	857,804
Capital expenditures									1,301	3,084	1,526
Operating Segments \| Services
Segment Reporting Information [Line Items]
Total revenues									156,365	145,365	136,558
Investment income									283	42	3
Amortization									4,485	4,019	4,135
Depreciation									1,881	1,988	2,213
Interest expense									4,950	5,970	7,678
Income before income taxes									24,338	19,713	17,870
Total assets	371,645				285,459				371,645	285,459	296,034
Capital expenditures									656	1,088	1,210
Other
Segment Reporting Information [Line Items]
Total revenues									1,239	(932)	(598)
Investment income									504	515	487
Amortization									10	39	39
Depreciation									3,088	2,952	1,958
Interest expense									(53,399)	(64,354)	(73,729)
Income before income taxes									56,775	68,527	82,934
Total assets	$ (2,758,902)				$ (2,189,990)				(2,758,902)	(2,189,990)	(1,892,511)
Capital expenditures									$ 2,880	$ 1,405	$ 1,181

Losses and Loss Adjustment Reserve - Effects of Reinsurance on Premiums Written and Earned (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Written
Direct premiums	$ 591,142	$ 599,828
Assumed premiums	0	0
Ceded premiums	591,124	599,807
Net premiums	18	21
Earned
Direct premiums	592,123	610,753
Assumed premiums	0	18
Ceded premiums	592,105	610,750
Net premiums	$ 18	$ 21

Losses and Loss Adjustment Reserve - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016 USD ($) Reinsurer	Dec. 31, 2015 USD ($)
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Ceded rate of premiums under insurance program	100.00%
Premiums written net	$ 591,124,000	$ 599,807,000
Reinsurance Recoverables on Unpaid Losses, Gross	78,100,000	32,000,000
Prepaid reinsurance premiums	308,661,000	309,643,000
Increase (Decrease) in Loss and Loss Adjustment Expense Reserve	0
Reserve For Losses And Loss Adjustment Expenses For Reinsurance Liability	$ 78,100,000	32,000,000
Number of reinsurers \| Reinsurer	2
Homeowners
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Reinsurance Recoverables on Unpaid Losses, Gross	$ 5,262
Private Passenger Auto Liability
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Reinsurance Recoverables on Unpaid Losses, Gross	0
Other Liability
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Reinsurance Recoverables on Unpaid Losses, Gross	$ 95
Wright National Flood Insurance Company [Member]
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Ceded rate of premiums under insurance program	100.00%
Percentage of reinsurance recoverables allowance	30.90%
Premiums written net	$ 589,492,000	598,402,000
Wright National Flood Insurance Company [Member] \| Quota Share Agreement
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Effective cedes rate under quota share agreement	100.00%
Commission rate, percent of ceded written premiums	30.50%
Wright National Flood Insurance Company [Member] \| Quota Share Agreement \| Reinsurer Concentration Risk [Member]
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Ceded amount	$ 1,600,000	$ 1,400,000

Statutory Financial Information - Additional Information (Detail) - Wright Flood - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Statutory Accounting Practices [Line Items]
Statutory capital and surplus required	$ 7,500,000
Statutory capital and surplus	23,500,000	$ 15,100,000
Statutory net Income	$ 8,200,000	$ 4,100,000

Subsidiary Dividend Restrictions - Additional Information (Detail) - Wright Flood - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2017
Dividend Restrictions [Line Items]
Dividend rate as a percentage of net income	100.00%
Ordinary dividends payment description	The maximum amount of ordinary dividends that Wright Flood can pay to shareholders in a rolling twelve month period is limited to the greater of 10% of statutory adjusted capital and surplus as shown on Wright Flood’s last annual statement on file with the superintendent of the Texas Department of Insurance or 100% of adjusted net income.
Scenario, Forecast
Dividend Restrictions [Line Items]
Maximum dividend payout that may be made without prior approval		$ 8.2
Maximum
Dividend Restrictions [Line Items]
Dividend rate as a percentage of net income	10.00%

Shareholders' Equity - Additional Information (Detail) - USD ($)	Sep. 02, 2014	Dec. 31, 2016	Jan. 06, 2016	Dec. 31, 2015	Nov. 11, 2015	Aug. 11, 2015	Jul. 20, 2015	Mar. 05, 2015	Jun. 30, 2014
Accelerated Share Repurchases [Line Items]
Stock Repurchase Program, Authorized Amount		$ 100,000,000	$ 375,000,000				$ 400,000,000		$ 25,000,000
Shares repurchased, aggregate repurchase amount					$ (75,000,000)
Treasury stock shares (in shares)		8,003,000	363,209	7,430,000		3,059,629
Fair value of common stock repurchased		$ 257,683,000		$ 238,775,000
Accelerated Share Repurchase Agreement
Accelerated Share Repurchases [Line Items]
Shares repurchased, aggregate repurchase amount	$ 50,000,000
Total number of shares repurchased (in shares)	1,539,760
Second Accelerated Share Repurchase Agreement
Accelerated Share Repurchases [Line Items]
Shares repurchased, aggregate repurchase amount								$ 100,000,000
Treasury stock shares (in shares)						391,637		2,667,992
Fair value of common stock repurchased								$ 85,000,000
Third Accelerated Share Repurchase Agreement [Member]
Accelerated Share Repurchases [Line Items]
Treasury stock shares (in shares)					1,985,981
Fair value of common stock repurchased					$ 63,750,000

Shareholders' Equity Repurchase Program (Details) - USD ($)	Dec. 31, 2016	Nov. 04, 2016	Jan. 06, 2016	Dec. 31, 2015	Nov. 11, 2015	Aug. 11, 2015	Jul. 20, 2015	Jul. 21, 2014	Jun. 30, 2014
Accelerated Share Repurchases [Line Items]
Treasury Stock, Shares	8,003,000		363,209	7,430,000		3,059,629
Treasury Stock, Value	$ 257,683,000			$ 238,775,000
Stock Repurchase Program, Number of Shares Authorized to be Repurchased						50,000,000
Stock Repurchase Program, Authorized Amount	$ 100,000,000		$ 375,000,000				$ 400,000,000		$ 25,000,000
Maximum
Accelerated Share Repurchases [Line Items]
Stock Repurchase Program, Authorized Amount							$ 450,000,000	$ 200,000,000
Fourth Accelerated Share Repurchase Agreement [Member] [Member]
Accelerated Share Repurchases [Line Items]
Treasury Stock, Shares	209,618
Treasury Stock, Value		$ 0
Stock Repurchase Program, Authorized Amount		$ 0
Third Accelerated Share Repurchase Agreement [Member]
Accelerated Share Repurchases [Line Items]
Treasury Stock, Shares					1,985,981
Treasury Stock, Value					$ 63,750,000

Statutory Financial Information	12 Months Ended
Statutory Financial Information	Dec. 31, 2016
Statutory Accounting Practices [Abstract]
Statutory Financial Information	Statutory Financial Information WNFIC maintains capital in excess of minimum statutory amount of $7.5 million as required by regulatory authorities. The statutory capital and surplus of WNFIC was $23.5 million as of December 31, 2016 and $15.1 million as of December 31, 2015. As of December 31, 2016 and 2015, WNFIC generated statutory net income of $8.2 million and $4.1 million, respectively.

Subsidiary Dividend Restrictions	12 Months Ended
Subsidiary Dividend Restrictions	Dec. 31, 2016
Disclosure of Restrictions on Dividends, Loans and Advances Disclosure [Abstract]
Subsidiary Dividend Restrictions	Subsidiary Dividend Restrictions Under the insurance regulations of Texas, where WNFIC in incorporated, the maximum amount of ordinary dividends that WNFIC can pay to shareholders in a rolling twelve month period is limited to the greater of 10% of statutory adjusted capital and surplus as shown on WNFIC’s last annual statement on file with the superintendent of the Texas Department of Insurance or 100% of adjusted net income. There was no dividend payout in 2016 and the maximum dividend payout that may be made in 2017 without prior approval is $8.2 million.

Summary of Significant Accounting Policies Fair Value of Financial Instruments (Details) $ in Millions	Dec. 31, 2016 USD ($)
Text Block [Abstract]
Long-term Debt, Fair Value	$ 598.8

Summary of Significant Accounting Policies Amortizable Intangible Assets (Details)	12 Months Ended
	Dec. 31, 2016
Minimum
Indefinite-lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	3 years
Maximum
Indefinite-lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years

Nature of Operations - Additional Information (Detail)	12 Months Ended
Nature of Operations - Additional Information (Detail)	Dec. 31, 2016 Segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of reportable segments	4

Fixed Income Securities (Details) $ in Millions	12 Months Ended
Fixed Income Securities (Details) $ in Millions	Dec. 31, 2016 USD ($)
Schedule of Available-for-sale Securities [Line Items]
Proceeds from Sale of Short-term Investments	$ 1.7