Condensed Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net income	$ 10.5	$ 12.0	$ 24.2	$ 21.0
Other comprehensive income (loss), net of tax:
Minimum pension liability adjustment	0	0	0.1	0
Foreign currency translation adjustment	0.7	(1.3)	0.7	(0.7)
Total other comprehensive income (loss), net of tax	0.7	(1.3)	0.8	(0.7)
Comprehensive income	$ 11.2	$ 10.7	$ 25.0	$ 20.3