Income Taxes - Components of (Loss)/Income Before Income Taxes (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Components of (Loss)/Income Before Income Taxes [Line Items]
Income/(loss) from continuing operations before income taxes	$ (4,459.5)	$ (2,258.7)	$ (1,266.0)
United States [Member]
Components of (Loss)/Income Before Income Taxes [Line Items]
Income/(loss) from continuing operations before income taxes	(4,652.0)	(2,341.9)	(1,271.5)
Outside of the U.S. [Member]
Components of (Loss)/Income Before Income Taxes [Line Items]
Income/(loss) from continuing operations before income taxes	$ 192.5	$ 83.2	$ 5.5