Goodwill

6 Months Ended

Jun. 30, 2017

Goodwill.

Goodwill

4.  Goodwill

The change in the carrying amount of goodwill is as follows:

	(in millions)
Balance at January 1, 2017	$	1,827.4
Acquisition		1.3
Effect of foreign currency translation		2.5
Balance at June 30, 2017	$	1,831.2

We had no accumulated impairment losses related to goodwill at June 30, 2017.