Segment Information (Tables)

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Schedule of Segment Reporting Information by Segment

Financial information relating to our segments for 2016, 2015 and 2014 is as follows (in millions):

Year Ended December 31, 2016	Brokerage		Risk Management		Corporate			Total
Revenues:
Commissions	$	2,439.1	$	—	$	—		$	2,439.1
Fees		775.7		717.1		—			1,492.8
Supplemental commissions		147.0		—		—			147.0
Contingent commissions		107.2		—		—			107.2
Investment income		52.3		1.0		—			53.3
Gains on books of business sales and other		6.6		—		—			6.6
Revenue from clean coal activities		—		—		1,350.1			1,350.1
Other - net gain		—		—		(1.3	)		(1.3	)
Total revenues		3,527.9		718.1		1,348.8			5,594.8
Compensation		2,041.8		424.5		72.6			2,538.9
Operating		600.9		171.4		25.4			797.7
Cost of revenues from clean coal activities		—		—		1,408.6			1,408.6
Interest		—		—		109.8			109.8
Depreciation		57.2		27.2		19.2			103.6
Amortization		244.7		2.5		—			247.2
Change in estimated acquisition earnout payables		32.1		—		—			32.1
Total expenses		2,976.7		625.6		1,635.6			5,237.9
Earnings (loss) before income taxes		551.2		92.5		(286.8	)		356.9
Provision (benefit) for income taxes		194.1		35.3		(317.5	)		(88.1	)
Net earnings		357.1		57.2		30.7			445.0
Net earnings attributable to noncontrolling interests		3.6		—		27.0			30.6
Net earnings attributable to controlling interests	$	353.5	$	57.2	$	3.7		$	414.4
Net foreign exchange gain	$	2.9	$	—	$	0.1		$	3.0
Revenues:
United States	$	2,334.4	$	610.3	$	1,327.9		$	4,272.6
United Kingdom		686.5		25.6		—			712.1
Australia		172.5		73.0		—			245.5
Canada		134.1		4.1		—			138.2
New Zealand		120.7		5.1		—			125.8
Other foreign		79.7		—		20.9			100.6
Total revenues	$	3,527.9	$	718.1	$	1,348.8		$	5,594.8
At December 31, 2016
Identifiable assets:
United States	$	4,393.6	$	540.5	$	1,622.2		$	6,556.3
United Kingdom		2,321.9		61.8		—			2,383.7
Australia		894.4		56.9		—			951.3
Canada		573.3		2.8		—			576.1
New Zealand		668.9		4.4		—			673.3
Other foreign		331.3		—		17.6			348.9
Total identifiable assets	$	9,183.4	$	666.4	$	1,639.8		$	11,489.6
Goodwill - net	$	3,736.9	$	28.1	$	2.8		$	3,767.8
Amortizable intangible assets - net		1,613.6		13.7		—			1,627.3

Year Ended December 31, 2015	Brokerage			Risk Management			Corporate			Total
Revenues:
Commissions	$	2,338.7		$	—		$	—		$	2,338.7
Fees		705.8			726.5			—			1,432.3
Supplemental commissions		125.5			—			—			125.5
Contingent commissions		93.7			—			—			93.7
Investment income		53.6			0.6			—			54.2
Gains on books of business sales and other		6.7			—			—			6.7
Revenue from clean coal activities		—			—			1,310.8			1,310.8
Other - net gain		—			—			30.5			30.5
Total revenues		3,324.0			727.1			1,341.3			5,392.4
Compensation		1,939.7			427.2			62.0			2,428.9
Operating		638.1			180.8			21.8			840.7
Cost of revenues from clean coal activities		—			—			1,351.5			1,351.5
Interest		—			—			103.0			103.0
Depreciation		54.4			24.3			15.2			93.9
Amortization		237.3			3.0			—			240.3
Change in estimated acquisition earnout payables		41.1			(0.5	)		—			40.6
Total expenses		2,910.6			634.8			1,553.5			5,098.9
Earnings (loss) before income taxes		413.4			92.3			(212.2	)		293.5
Provision (benefit) for income taxes		145.3			35.1			(276.0	)		(95.6	)
Net earnings		268.1			57.2			63.8			389.1
Net earnings attributable to noncontrolling interests		1.7			—			30.6			32.3
Net earnings attributable to controlling interests	$	266.4		$	57.2		$	33.2		$	356.8
Net foreign exchange gain (loss)	$	(0.2	)	$	—		$	0.4		$	0.2
Revenues:
United States	$	2,122.1		$	591.8		$	1,327.5		$	4,041.4
United Kingdom		738.5			28.4			—			766.9
Australia		157.3			99.4			—			256.7
Canada		133.1			3.5			—			136.6
New Zealand		118.6			4.0			—			122.6
Other foreign		54.4			—			13.8			68.2
Total revenues	$	3,324.0		$	727.1		$	1,341.3		$	5,392.4
At December 31, 2015
Identifiable assets:
United States	$	4,092.8		$	525.2		$	1,264.9		$	5,882.9
United Kingdom		2,580.0			72.1			—			2,652.1
Australia		895.8			55.6			—			951.4
Canada		575.0			3.1			—			578.1
New Zealand		623.1			4.1			—			627.2
Other foreign		203.0			—			19.1			222.1
Total identifiable assets	$	8,969.7		$	660.1		$	1,284.0		$	10,913.8
Goodwill - net	$	3,635.6		$	27.3		$	—		$	3,662.9
Amortizable intangible assets - net		1,677.8			21.0			—			1,698.8

Year Ended December 31, 2014	Brokerage		Risk Management			Corporate			Total
Revenues:
Commissions	$	2,083.0	$	—		$	—		$	2,083.0
Fees		577.0		681.3			—			1,258.3
Supplemental commissions		104.0		—			—			104.0
Contingent commissions		84.7		—			—			84.7
Investment income		40.3		1.0			—			41.3
Gains on books of business sales and other		7.3		—			—			7.3
Revenue from clean coal activities		—		—			1,029.5			1,029.5
Other - net gain		—		—			18.4			18.4
Total revenues		2,896.3		682.3			1,047.9			4,626.5
Compensation		1,703.1		414.2			50.3			2,167.6
Operating		530.1		176.4			36.6			743.1
Cost of revenues from clean coal activities		—		—			1,058.9			1,058.9
Interest		—		—			89.0			89.0
Depreciation		44.4		21.2			3.8			69.4
Amortization		186.3		3.2			—			189.5
Change in estimated acquisition earnout payables		17.6		(0.1	)		—			17.5
Total expenses		2,481.5		614.9			1,238.6			4,335.0
Earnings (loss) before income taxes		414.8		67.4			(190.7	)		291.5
Provision (benefit) for income taxes		151.0		25.3			(212.3	)		(36.0	)
Net earnings		263.8		42.1			21.6			327.5
Net earnings attributable to noncontrolling interests		0.9		—			23.2			24.1
Net earnings (loss) attributable to controlling interests	$	262.9	$	42.1		$	(1.6	)	$	303.4
Net foreign exchange gain (loss)	$	1.1	$	—		$	(0.6	)	$	0.5
Revenues:
United States	$	1,873.3	$	532.6		$	1,036.9		$	3,442.8
United Kingdom		696.8		29.4			—			726.2
Australia		122.4		114.2			—			236.6
Canada		81.8		3.2			—			85.0
New Zealand		78.4		2.9			—			81.3
Other foreign		43.6		—			11.0			54.6
Total revenues	$	2,896.3	$	682.3		$	1,047.9		$	4,626.5
At December 31, 2014
Identifiable assets:
United States	$	3,557.1	$	457.5		$	1,032.0		$	5,046.6
United Kingdom		2,376.4		74.0			—			2,450.4
Australia		992.2		39.0			—			1,031.2
Canada		639.2		2.8			—			642.0
New Zealand		614.1		1.6			—			615.7
Other foreign		207.2		—			16.9			224.1
Total identifiable assets	$	8,386.2	$	574.9		$	1,048.9		$	10,010.0
Goodwill - net	$	3,427.5	$	22.1		$	—		$	3,449.6
Amortizable intangible assets - net		1,757.3		18.7			—			1,776.0