Income Taxes - Components of (Loss)/Income Before Income Taxes (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Components of (Loss)/Income Before Income Taxes [Line Items]
(Loss)/Income from Continuing Operations before Income Taxes	$ (2,253.2)	$ (1,232.8)	$ (1,341.9)
United States [Member]
Components of (Loss)/Income Before Income Taxes [Line Items]
(Loss)/Income from Continuing Operations before Income Taxes	(2,341.9)	(1,271.5)	(1,329.3)
Outside of the U.S. [Member]
Components of (Loss)/Income Before Income Taxes [Line Items]
(Loss)/Income from Continuing Operations before Income Taxes	$ 88.7	$ 38.7	$ (12.6)