Basis of Presentation (Cash Flow Adjustments) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Cash generated by (used in) operating activities	$ 19.5	$ 3.3	$ 80.0	$ (14.0)	$ (28.2)
Cash (used in) investing activities	(107.8)	(212.2)	(406.4)	(570.3)	(811.9)
Cash generated by financing activities	4.0	156.3	120.1	647.4	1,071.8
Effect of exchange rate changes on cash	4.3	2.8	2.3	2.1	0.6
Scenario, Previously Reported
Cash generated by (used in) operating activities		(18.8)		(36.1)	(82.8)
Cash (used in) investing activities		(186.3)		(544.4)	(762.7)
Cash generated by financing activities					1,077.3
Effect of exchange rate changes on cash		$ (1.0)		$ (1.7)	$ 0.5