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Intangible Assets

9 Months Ended

Sep. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

6. Intangible Assets

The carrying amount of goodwill at September 30, 2018 and December 31, 2017 allocated by domestic and foreign operations is as follows (in millions):

		Brokerage				Risk Management				Corporate				Total
At September 30, 2018
United States		$	2,626.7			$	29.6			$	—			$	2,656.3
United Kingdom			726.7				7.0				—				733.7
Canada			373.2				—				—				373.2
Australia			411.8				—				—				411.8
New Zealand			197.4				10.1				—				207.5
Other foreign			116.2				—				2.6				118.8
Total goodwill - net		$	4,452.0			$	46.7			$	2.6			$	4,501.3

		Brokerage				Risk Management				Corporate				Total
At December 31, 2017
United States		$	2,280.9			$	25.8			$	—			$	2,306.7
United Kingdom			738.5				7.2				—				745.7
Canada			374.0				—				—				374.0
Australia			416.6				—				—				416.6
New Zealand			209.3				9.6				—				218.9
Other foreign			99.9				—				3.0				102.9
Total goodwill - net		$	4,119.2			$	42.6			$	3.0			$	4,164.8

The changes in the carrying amount of goodwill for the nine-month period ended September 30, 2018 are as follows (in millions):

		Brokerage				Risk Management				Corporate				Total
Balance as of December 31, 2017, as previously reported		$	4,152.3			$	42.6			$	3.0			$	4,197.9
Adoption of Topic 606			(33.1	)			—				—				(33.1	)
Balance at December 31, 2017, as restated			4,119.2				42.6				3.0				4,164.8
Goodwill acquired during the period			397.4				7.3				—				404.7
Goodwill adjustments due to appraisals and other acquisition adjustments			3.7				(2.3	)			—				1.4
Foreign currency translation adjustments during the period			(68.3	)			(0.9	)			(0.4	)			(69.6	)
Balance as of September 30, 2018		$	4,452.0			$	46.7			$	2.6			$	4,501.3

Major classes of amortizable intangible assets at September 30, 2018 and December 31, 2017 consist of the following (in millions):

		September 30, 2018				December 31, 2017
Expiration lists		$	3,342.1			$	3,055.9
Accumulated amortization - expiration lists			(1,614.8	)			(1,422.1	)
			1,727.3				1,633.8
Non-compete agreements			55.9				53.5
Accumulated amortization - non-compete agreements			(48.0	)			(46.1	)
			7.9				7.4
Trade names			60.7				25.9
Accumulated amortization - trade names			(23.8	)			(22.5	)
			36.9				3.4
Net amortizable assets		$	1,772.1			$	1,644.6

Estimated aggregate amortization expense for each of the next five years and thereafter is as follows:

2018 (remaining three months)		$	71.4
2019			275.4
2020			258.8
2021			235.3
2022			212.0
Thereafter			719.2
Total		$	1,772.1

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- References

No definition available.

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- Definition

The entire disclosure for goodwill and intangible assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-URI http://asc.fasb.org/topic&trid=2144416

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