Derivative Financial Instruments (Fair Value Of Derivative Instruments In Statement Of Financial Position) (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Derivatives, Fair Value
Derivative assets	$ 213.3	$ 238.0
Derivative liabilities	339.2	410.7
Derivatives Designated As Hedging Instruments | Foreign Exchange Contract
Derivatives, Fair Value
Derivative assets	84.7	57.9
Derivative liabilities	193.2	230.6
Derivatives Designated As Hedging Instruments | Foreign Exchange Contract | Current - Derivative Financial Instruments
Derivatives, Fair Value
Derivative assets	67.4	47.2
Derivative liabilities	154.6	183.0
Derivatives Designated As Hedging Instruments | Foreign Exchange Contract | Long-Term - Derivative Financial Instruments
Derivatives, Fair Value
Derivative assets	17.3	10.7
Derivative liabilities	38.6	47.6
Derivatives Not Designated As Hedging Instruments | Foreign Exchange Contract
Derivatives, Fair Value
Derivative assets	20.2
Derivative liabilities	37.6
Derivatives Not Designated As Hedging Instruments | Foreign Exchange Contract | Current - Derivative Financial Instruments
Derivatives, Fair Value
Derivative assets	17.2
Derivative liabilities	25.9
Derivatives Not Designated As Hedging Instruments | Foreign Exchange Contract | Long-Term - Derivative Financial Instruments
Derivatives, Fair Value
Derivative assets	3.0
Derivative liabilities	11.7
Derivatives Not Designated As Hedging Instruments | Long-term – Derivative financial instruments – Synthetic Bonds – Call Option Premium
Derivatives, Fair Value
Derivative assets	108.4	180.1
Derivatives Not Designated As Hedging Instruments | Long-term – Derivative financial instruments – Synthetic Bonds – Embedded Derivatives
Derivatives, Fair Value
Derivative liabilities	$ 108.4	$ 180.1