Accumulated Other Comprehensive Loss, Net of Tax Reclassification of Accumulated Other Comprehensive Loss (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Reclassification of Accumulated Other Comprehensive Income [Abstract]
Foreign currency translation adjustments	$ (0.5)		$ (0.9)
Losses on derivative instruments	0.5		0.4
Amortization of defined benefit pension and postretirement plans items	3.0	[1]	2.6	[1]
Tax effect	(1.4)		(0.5)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	$ (1.6)		$ (1.6)

[1] These accumulated other comprehensive loss components are included in the computation of net periodic cost. See Note 9 for further information.