Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net income	$ 531.4	$ 135.4	$ 294.5
Other comprehensive income (loss)
Change in derivative instruments designated as cash flow hedges, net of tax	(1.2)	(9.6)	0.9
Foreign currency translation adjustments	(21.8)	(91.1)	(50.4)
Benefit plan adjustments, net of tax	(4.5)	(18.5)	(18.4)
Other comprehensive income (loss)	(27.5)	(119.2)	(67.9)
Comprehensive income	$ 503.9	$ 16.2	$ 226.6