Derivative Financial Instruments (Fair Value Of Derivative Instruments In Statement Of Financial Position) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Derivatives, Fair Value [Line Items]
Derivative assets	$ 82.6	$ 114.5
Derivative liabilities	61.5	103.6
Derivatives designated as hedging instruments
Derivatives, Fair Value [Line Items]
Derivative assets	34.9	87.2
Derivative liabilities	31.5	88.6
Derivatives designated as hedging instruments | Foreign exchange contracts | Current – Derivative financial instruments
Derivatives, Fair Value [Line Items]
Derivative assets	29.2	60.8
Derivative liabilities	23.2	58.3
Derivatives designated as hedging instruments | Foreign exchange contracts | Long-term – Derivative financial instruments
Derivatives, Fair Value [Line Items]
Derivative assets	5.7	26.4
Derivative liabilities	8.3	28.7
Derivatives designated as hedging instruments | Interest rate contracts | Current – Derivative financial instruments
Derivatives, Fair Value [Line Items]
Derivative liabilities		1.6
Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Derivative assets	47.7	27.3
Derivative liabilities	30.0	15.0
Derivatives not designated as hedging instruments | Foreign exchange contracts | Current – Derivative financial instruments
Derivatives, Fair Value [Line Items]
Derivative assets	44.2	9.1
Derivative liabilities	27.2	6.7
Derivatives not designated as hedging instruments | Foreign exchange contracts | Long-term – Derivative financial instruments
Derivatives, Fair Value [Line Items]
Derivative assets	3.5	18.2
Derivative liabilities	$ 2.8	$ 8.3