Consolidated Statements of Comprehensive Income (Loss) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net income (loss)	$ 132.8	$ 119.0	$ 17.1
Reclassification of realized loss on interest rate swap agreements from accumulated other comprehensive loss to net income (loss), net of tax	0	0	1.9
Foreign currency translation adjustment	(6.7)	2.5	(1.8)
Other Comprehensive Income (Loss), Net of Tax	(6.7)	2.5	0.1
Comprehensive income (loss)	$ 126.1	$ 121.5	$ 17.2