Segment Information (Tables)

12 Months Ended

Dec. 31, 2020

Segment Reporting [Abstract]

Schedule of Segment Reporting Information by Segment

Financial information relating to our segments for 2020, 2019 and 2018 is as follows (in millions):

Year Ended December 31, 2020	Brokerage			Risk Management			Corporate			Total
Revenues:
Commissions	$	3,591.9		$	—		$	—		$	3,591.9
Fees		1,136.9			821.0			—			1,957.9
Supplemental revenues		221.9			—			—			221.9
Contingent revenues		147.0			—			—			147.0
Investment income		75.2			0.7			—			75.9
Net losses on divestitures		(5.8	)		—			—			(5.8	)
Revenue from clean coal activities		—			—			863.5			863.5
Other net losses		—			—			(0.4	)		(0.4	)
Revenues before reimbursements		5,167.1			821.7			863.1			6,851.9
Reimbursements		—			151.7			—			151.7
Total revenues		5,167.1			973.4			863.1			7,003.6
Compensation		2,882.5			517.5			66.5			3,466.5
Operating		687.2			162.6			56.7			906.5
Reimbursements		—			151.7			—			151.7
Cost of revenues from clean coal activities		—			—			882.1			882.1
Interest		—			—			196.4			196.4
Depreciation		73.5			49.4			22.2			145.1
Amortization		411.3			6.0			—			417.3
Change in estimated acquisition earnout payables		(29.7	)		(3.2	)		—			(32.9	)
Total expenses		4,024.8			884.0			1,223.9			6,132.7
Earnings (loss) before income taxes		1,142.3			89.4			(360.8	)		870.9
Provision (benefit) for income taxes		276.3			22.5			(286.0	)		12.8
Net earnings (loss)		866.0			66.9			(74.8	)		858.1
Net earnings attributable to noncontrolling interests		4.9			—			34.4			39.3
Net earnings (loss) attributable to controlling interests	$	861.1		$	66.9		$	(109.2	)	$	818.8
Net foreign exchange loss	$	(2.6	)	$	(0.1	)	$	(0.2	)	$	(2.9	)
Revenues:
United States	$	3,369.4		$	816.4		$	863.1		$	5,048.9
United Kingdom		993.7			40.7			—			1,034.4
Australia		216.1			98.4			—			314.5
Canada		243.8			5.3			—			249.1
New Zealand		141.8			12.6			—			154.4
Other foreign		202.3			—			—			202.3
Total revenues	$	5,167.1		$	973.4		$	863.1		$	7,003.6
At December 31, 2020
Identifiable assets:
United States	$	8,897.9		$	716.2		$	2,172.2		$	11,786.3
United Kingdom		6,135.1			139.2			—			6,274.3
Australia		1,373.3			89.6			—			1,462.9
Canada		1,053.6			4.8			—			1,058.4
New Zealand		766.0			24.1			—			790.1
Other foreign		959.4			—			—			959.4
Total identifiable assets	$	19,185.3		$	973.9		$	2,172.2		$	22,331.4
Goodwill - net	$	6,053.6		$	70.5		$	2.9		$	6,127.0
Amortizable intangible assets - net		2,376.3			23.6			—			2,399.9

Year Ended December 31, 2019	Brokerage			Risk Management			Corporate			Total
Revenues:
Commissions	$	3,320.6		$	—		$	—		$	3,320.6
Fees		1,074.2			836.9			—			1,911.1
Supplemental revenues		210.5			—			—			210.5
Contingent revenues		135.6			—			—			135.6
Investment income		85.3			1.6			—			86.9
Net gains on divestitures		75.3			—			—			75.3
Revenue from clean coal activities		—			—			1,319.3			1,319.3
Other net losses		—			—			(2.9	)		(2.9	)
Revenues before reimbursements		4,901.5			838.5			1,316.4			7,056.4
Reimbursements		—			138.6			—			138.6
Total revenues		4,901.5			977.1			1,316.4			7,195.0
Compensation		2,745.9			515.7			77.9			3,339.5
Operating		796.5			184.9			87.1			1,068.5
Reimbursements		—			138.6			—			138.6
Cost of revenues from clean coal activities		—			—			1,352.8			1,352.8
Interest		—			—			179.8			179.8
Depreciation		66.6			46.2			27.6			140.4
Amortization		329.1			4.9			—			334.0
Change in estimated acquisition earnout payables		16.9			(1.6	)		—			15.3
Total expenses		3,955.0			888.7			1,725.2			6,568.9
Earnings (loss) before income taxes		946.5			88.4			(408.8	)		626.1
Provision (benefit) for income taxes		229.2			22.2			(341.1	)		(89.7	)
Net earnings (loss)		717.3			66.2			(67.7	)		715.8
Net earnings attributable to noncontrolling interests		17.2			—			29.8			47.0
Net earnings (loss) attributable to controlling interests	$	700.1		$	66.2		$	(97.5	)	$	668.8
Net foreign exchange loss	$	(1.0	)	$	(0.1	)	$	(5.6	)	$	(6.7	)
Revenues:
United States	$	3,234.3		$	828.4		$	1,316.4		$	5,379.1
United Kingdom		921.8			41.6			—			963.4
Australia		211.3			87.3			—			298.6
Canada		221.4			4.6			—			226.0
New Zealand		145.6			15.2			—			160.8
Other foreign		167.1			—			—			167.1
Total revenues	$	4,901.5		$	977.1		$	1,316.4		$	7,195.0
At December 31, 2019
Identifiable assets:
United States	$	8,132.3		$	655.6		$	1,994.8		$	10,782.7
United Kingdom		4,964.5			126.6			—			5,091.1
Australia		1,217.9			90.0			—			1,307.9
Canada		913.6			3.1			—			916.7
New Zealand		695.9			22.8			—			718.7
Other foreign		817.7			—			—			817.7
Total identifiable assets	$	16,741.9		$	898.1		$	1,994.8		$	19,634.8
Goodwill - net	$	5,548.9		$	66.6		$	3.0		$	5,618.5
Amortizable intangible assets - net		2,289.9			28.8			—			2,318.7

Year Ended December 31, 2018	Brokerage		Risk Management			Corporate			Total
Revenues:
Commissions	$	2,920.7	$	—		$	—		$	2,920.7
Fees		958.5		797.8			—			1,756.3
Supplemental revenues		189.9		—			—			189.9
Contingent revenues		98.0		—			—			98.0
Investment income		69.6		0.5			—			70.1
Net gains on divestitures		10.2		—			—			10.2
Revenue from clean coal activities		—		—			1,746.3			1,746.3
Other net gains		—		—			0.9			0.9
Revenues before reimbursements		4,246.9		798.3			1,747.2			6,792.4
Reimbursements		—		141.6			—			141.6
Total revenues		4,246.9		939.9			1,747.2			6,934.0
Compensation		2,447.1		489.7			89.5			3,026.3
Operating		673.5		174.6			55.6			903.7
Reimbursements		—		141.6			—			141.6
Cost of revenues from clean coal activities		—		—			1,816.0			1,816.0
Interest		—		—			138.4			138.4
Depreciation		60.9		38.7			28.2			127.8
Amortization		286.9		4.3			—			291.2
Change in estimated acquisition earnout payables		14.3		(4.7	)		—			9.6
Total expenses		3,482.7		844.2			2,127.7			6,454.6
Earnings (loss) before income taxes		764.2		95.7			(380.5	)		479.4
Provision (benefit) for income taxes		191.0		25.3			(412.8	)		(196.5	)
Net earnings		573.2		70.4			32.3			675.9
Net earnings attributable to noncontrolling interests		10.7		-			31.7			42.4
Net earnings attributable to controlling interests	$	562.5	$	70.4		$	0.6		$	633.5
Net foreign exchange gain	$	-	$	-		$	2.9		$	2.9
Revenues:
United States	$	2,840.9	$	789.7		$	1,747.2		$	5,377.8
United Kingdom		738.5		35.4			—			773.9
Australia		195.9		94.7			—			290.6
Canada		181.1		4.3			—			185.4
New Zealand		141.7		15.8			—			157.5
Other foreign		148.8		—			—			148.8
Total revenues	$	4,246.9	$	939.9		$	1,747.2		$	6,934.0
At December 31, 2018
Identifiable assets:
United States	$	6,865.4	$	571.4		$	1,800.8		$	9,237.6
United Kingdom		3,758.5		103.8			—			3,862.3
Australia		1,096.1		47.2			—			1,143.3
Canada		783.1		4.4			—			787.5
New Zealand		688.5		21.3			—			709.8
Other foreign		593.5		—			—			593.5
Total identifiable assets	$	13,785.1	$	748.1		$	1,800.8		$	16,334.0
Goodwill - net	$	4,573.6	$	49.3		$	2.7		$	4,625.6
Amortizable intangible assets - net		1,753.7		19.3			—			1,773.0