Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net income	$ 139.7	$ 159.2	$ 317.8	$ 275.4
Other comprehensive income (loss):
Change in derivative instruments designated as cash flow hedges, net of tax	0.8	(6.3)	7.4	(15.5)
Foreign currency translation adjustments	24.1	19.1	28.7	20.7
Benefit plan adjustments, net of tax	2.1	1.7	4.3	3.4
Other comprehensive income (loss)	27.0	14.5	40.4	8.6
Comprehensive income	$ 166.7	$ 173.7	$ 358.2	$ 284.0