Financial Instruments and Risk Management (Effect of Derivative Instruments on the Condensed Consolidated Balance Sheets Fair Value of Derivative Instruments Derivatives Designated As Hedging Instruments) (Details) - Designated as Hedging Instrument - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	$ 83.7	$ 44.7
Liability Derivatives, Fair Value	0.0	10.5
Prepaid expenses and other current assets | Interest rate swaps
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	76.2	36.3
Prepaid expenses and other current assets | Foreign exchange forward contracts
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	7.5	8.4
Other current liabilities | Interest rate swaps
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	$ 0.0	$ 10.5