Consolidated Statements Of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 150.9	$ 55.6	$ 313.8	$ 193.1
Foreign currency translation adjustment	(22.4)	(5.2)	(28.7)	(5.4)
Other Comprehensive Income (Loss), Net of Tax	(22.4)	(5.2)	(28.7)	(5.4)
Comprehensive income (loss)	$ 128.5	$ 50.4	$ 285.1	$ 187.7