Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 23.5	$ 61.9	$ 27.1	$ 66.7
Other comprehensive income (loss), net of tax:
Unrealized (loss) income on derivative instruments, net of tax benefit (expense) of $0.6 and $(0.3) and $1.3 and $0.9, respectively	(1.6)	0.4	(3.5)	(2.1)
Foreign currency translation adjustments, net of tax benefit (expense) of $4.2 and $0.0 and $4.2 and $0.0, respectively	(19.3)	12.9	(6.8)	40.3
Recognition of deferred pension and other post-retirement items, net of tax benefit (expense) of $0.7 and $(1.8) and $0.8 and $(2.7), respectively	(2.7)	4.9	(3.2)	7.3
Other comprehensive (loss) income, net of tax	(23.6)	18.2	(13.5)	45.5
Comprehensive (loss) income	$ (0.1)	$ 80.1	$ 13.6	$ 112.2