Consolidated Statements Of Comprehensive Income (Loss) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 50.9	$ 28.3
Foreign currency translation adjustment	(3.9)	(2.4)
Other comprehensive loss, net of tax	(3.9)	(2.4)
Comprehensive income (loss)	$ 47.0	$ 25.9