Financial Instruments and Risk Management (Derivatives Designated As Hedging Instruments Fair Values of Derivative Instruments) (Details) (Designated as Hedging Instruments, USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	$ 88.2	$ 183.4
Liability Derivatives, Fair Value	0	68.9
Prepaid expenses and other current assets | Interest rate swaps
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	52.3	90.3
Prepaid expenses and other current assets | Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	11.6	0
Other assets | Interest rate swaps
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	24.3	93.1
Other current liabilities | Interest rate swaps
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	0	15.8
Other current liabilities | Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	$ 0	$ 53.1