Goodwill (Tables)

9 Months Ended

Sep. 30, 2017

Goodwill.

Schedule of changes in the carrying amount of goodwill

	(in millions)
Balance at January 1, 2017	$	1,827.4
Acquisition		1.3
Effect of foreign currency translation		5.3
Balance at September 30, 2017	$	1,834.0