Goodwill (Tables)

3 Months Ended

Mar. 31, 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		0.5
Balance at March 31, 2017	$	1,829.2