Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Statement of Other Comprehensive Income [Abstract]
Net income	$ 12.0	$ 4.4	$ 22.3	$ 13.4
Other comprehensive income (loss):
Foreign currency translation loss	(0.7)	(2.9)	(2.9)	(1.6)
Pension and postretirement benefit adjustments, net of tax	0	0.6	0.4	0.7
Total other comprehensive loss	(0.7)	(2.3)	(2.5)	(0.9)
Comprehensive income, net of tax	$ 11.3	$ 2.1	$ 19.8	$ 12.5