Consolidated Statements Of Comprehensive Income (Loss) (Unaudited) Consolidated Statements of comprehensive Income (Loss) Parenthetical - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Unrealized income (loss) on derivative instruments, net of tax benefit (expense) of $0.2 and $(0.2) and $1.5 and $0.7, respectively	$ 0.2	$ (0.2)	$ 1.5	$ 0.7
Foreign currency translation adjustments, net of tax benefit (expense) of $0.4 and $0.0 and $4.6 and $0.0, respectively	0.4	0.0	4.6	0.0
Recognition of deferred pension and other post-retirement items, net of tax benefit (expense) of $0.6 and $(0.9) and $1.4 and $(3.6), respectively	$ 0.6	$ (0.9)	$ 1.4	$ (3.6)