Derivative Financial Instruments (Fair Value Of Derivative Instruments In Statement Of Financial Position) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 140.4	$ 82.6
Derivative Liabilities	154.2	61.5
Derivatives Designated As Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	103.9	34.9
Derivative Liabilities	131.0	31.5
Derivatives Designated As Hedging Instruments [Member] | Foreign Exchange Contract [Member] | Current - Derivative Financial Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	65.7	29.2
Derivative Liabilities	80.0	23.2
Derivatives Designated As Hedging Instruments [Member] | Foreign Exchange Contract [Member] | Long-Term - Derivative Financial Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	38.2	5.7
Derivative Liabilities	51.0	8.3
Derivatives Not Designated As Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	36.5	47.7
Derivative Liabilities	23.2	30.0
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange Contract [Member] | Current - Derivative Financial Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	31.8	44.2
Derivative Liabilities	19.7	27.2
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange Contract [Member] | Long-Term - Derivative Financial Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	4.7	3.5
Derivative Liabilities	$ 3.5	$ 2.8