Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the carrying amount of goodwill by segment

The changes in the carrying amount of goodwill were as follows:

(amounts in millions)
Balance at December 31, 2017
Goodwill	$	2,299.2
Accumulated impairment losses	(46.6		)
	2,252.6
Additions from acquisitions	11.1
Foreign currency translation and other	(76.3		)
Balance at September 30, 2018
Goodwill	2,234.0
Accumulated impairment losses	(46.6		)
	$	2,187.4

Schedule of finite-lived intangible assets subject to amortization

Intangible assets subject to amortization were as follows:

	September 30, 2018							December 31, 2017
(amounts in millions)	Gross Carrying Amount		Accumulated Amortization			Net Book Value		Gross Carrying Amount		Accumulated Amortization			Net Book Value
Customer lists	$	929.7	$	(266.3	)	$	663.4	$	952.0	$	(222.5	)	$	729.5
Developed technology	382.3		(146.0		)	236.3		393.0		(119.9		)	273.1
Tradenames	5.9		(1.5		)	4.4		6.1		(1.1		)	5.0
Non-compete agreements	1.6		(1.2		)	0.4		1.7		(1.1		)	0.6
Total	$	1,319.5	$	(415.0	)	$	904.5	$	1,352.8	$	(344.6	)	$	1,008.2