Business Combinations (Tables)

12 Months Ended

Dec. 31, 2015

Business Combinations [Abstract]

Acquisition Method for Recording Business Combinations

During 2015, we acquired substantially all of the net assets of the following firms in exchange for our common stock and/or cash. These acquisitions have been accounted for using the acquisition method for recording business combinations (in millions except share data):

Name and Effective Date of Acquisition	Common Shares Issued			Common Share Value		Cash Paid		Accrued Liability		Escrow Deposited		Recorded Earnout Payable		Total Recorded Purchase Price		Maximum Potential Earnout Payable
		(000s	)
e3 Financial, Inc. January 1, 2015		2		$	—	$	9.1	$	—	$	0.1	$	0.7	$	9.9	$	7.0
Aequus Trade Credit LLC January 31, 2015		11			0.3		1.5		—		0.2		1.3		3.3		1.9
Cohen & Lord Insurance Brokers Limited February 1, 2015		77			3.6		2.1		—		—		—		5.7		—
Cohn Financial Group, LLC (CFG) February 1, 2015		407			19.0		—		—		0.3		4.1		23.4		14.0
Excel Insurance Services, Inc. February 1, 2015		52			1.5		7.3		—		1.0		—		9.8		—
Metcom Excess February 1, 2015		49			1.8		2.3		—		0.5		—		4.6		—
NationAir Aviation Insurance February 1, 2015		288			12.3		—		—		1.3		—		13.6		—
Evolution Group of Companies February 6, 2015		101			4.7		0.9		0.5		0.4		2.9		9.4		3.1
Burns-Fazzi, Brock & Associates, LLC (BFB) April 1, 2015		709			33.4		—		—		1.0		7.6		42.0		27.0
Madison Risk & Insurance Services, Inc. April 1, 2015		232			10.3		3.7		—		1.0		1.2		16.2		4.0
Integrated Healthcare Strategies, LLC (IHS) May 1, 2015		990			41.4		0.5		3.1		6.2		4.5		55.7		20.8
James R. Weir Insurance Agency, Inc. May 1, 2015		56			2.5		—		—		0.3		0.8		3.6		1.1
McDowall Associates Human Resources Consultants Ltd. May 1, 2015		34			1.5		0.6		0.6		0.1		0.5		3.3		2.5
Vital Benefits, Inc. May 1, 2015		118			5.6		—		—		0.1		—		5.7		—
Monument, LLC (ML) June 1, 2015		254			10.8		4.0		—		1.7		2.4		18.9		5.0
Solid Benefit Guidance Limited Liability Company (SBG) June 1, 2015		932			44.0		0.3		2.5		1.0		11.8		59.6		32.5

Name and Effective Date of Acquisition	Common Shares Issued		Common Share Value		Cash Paid		Accrued Liability		Escrow Deposited		Recorded Earnout Payable		Total Recorded Purchase Price		Maximum Potential Earnout Payable
		(000s)
ARM Re Ltda Corredores de Reaseguros July 1, 2015		—	$	—	$	0.9	$	—	$	0.7	$	0.2	$	1.8	$	0.5
National Administration Company, Inc. (NAC) August 1, 2015		—		—		19.1		—		2.1		2.8		24.0		10.8
William Gallagher Associates Insurance Brokers, Inc. (WGA) August 1, 2015		1,605		69.0		75.0		—		7.5		—		151.5		—
North Alabama Insurance, Inc. September 1, 2015		188		7.2		—		—		0.8		—		8.0		—
Burkwald & Associates, Inc. October 1, 2015		—		—		3.8		—		0.1		0.7		4.6		3.5
Sigma II Insurance Agency October 1, 2015		—		—		5.6		—		0.1		1.0		6.7		4.2
Christie Phoenix (Victoria) Ltd. and Discovery Insurance Services Ltd. November 1, 2015		—		—		15.0		—		1.7		0.5		17.2		2.6
Reid Manson Limited November 1, 2015		—		—		6.2		—		—		2.3		8.5		4.1
Centennial Insurance Agency, LLC December 1, 2015		—		—		9.5		—		1.0		1.1		11.6		1.4
Hawk Agency, Inc. December 1, 2015		—		—		4.0		—		0.4		0.7		5.1		1.5
Managed Healthcare Solutions, Inc. December 1, 2015		—		—		2.9		—		0.1		1.1		4.1		3.7
McPherson Benefits Group, Inc. December 1, 2015		—		—		7.5		—		0.1		1.5		9.1		5.0
Strathearn Insurance Group Pty. Ltd. (SIG) December 1, 2015		—		—		39.2		—		2.2		0.7		42.1		1.1
Fifteen other acquisitions completed in 2015		245		10.5		28.5		0.4		2.2		7.2		48.8		45.0
		6,350	$	279.4	$	249.5	$	7.1	$	34.2	$	57.6	$	627.8	$	202.3

Summary of Estimated Fair Values of Net Assets Acquired

The following is a summary of the estimated fair values of the net assets acquired at the date of each acquisition made in 2015 (in millions):

	CFG		BFB		IHS		ML		SBG		NAC		WGA		SIG		Thirty-Six Other Acquisitions		Total
Cash	$	0.1	$	0.1	$	—	$	—	$	—	$	0.3	$	—	$	—	$	3.8	$	4.3
Other current assets		—		0.3		8.3		0.2		1.4		—		63.4		31.3		33.8		138.7
Fixed assets		—		—		1.5		—		—		0.2		0.6		0.5		5.8		8.6
Noncurrent assets		—		—		—		—		—		—		0.1		—		1.3		1.4
Goodwill		13.6		17.8		31.3		10.1		36.5		5.8		100.1		30.0		109.4		354.6
Expiration lists		9.6		23.9		17.6		8.2		22.3		17.7		49.3		15.9		98.5		263.0
Non-compete agreements		0.1		0.1		0.4		0.2		0.1		—		0.4		0.4		2.0		3.7
Trade names		—		—		—		0.3		—		—		—		—		—		0.3
Total assets acquired		23.4		42.2		59.1		19.0		60.3		24.0		213.9		78.1		254.6		774.6
Current liabilities		—		0.2		3.4		0.1		0.7		—		62.4		31.5		29.1		127.4
Noncurrent liabilities		—		—		—		—		—		—		—		4.5		14.9		19.4
Total liabilities assumed		—		0.2		3.4		0.1		0.7		—		62.4		36.0		44.0		146.8
Total net assets acquired	$	23.4	$	42.0	$	55.7	$	18.9	$	59.6	$	24.0	$	151.5	$	42.1	$	210.6	$	627.8

Summary of Unaudited Pro Forma Historical Results

The following is a summary of the unaudited pro forma historical results, as if these entities had been acquired at January 1, 2014 (in millions, except per share data):

	Year Ended December 31,
	2015		2014
Total revenues	$	5,510.7	$	4,858.7
Net earnings attributable to controlling interests		367.8		316.5
Basic earnings per share		2.10		1.99
Diluted earnings per share		2.09		1.97