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Financial Instruments (Derivative Instruments Which Were Not Designated As Hedging Instruments) (Details) (Forward Currency Contracts [Member], Other Expense, Net [Member], Fair Value Of Derivatives Not Designated As Hedging Instruments [Member], USD $)
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Forward Currency Contracts [Member] | Other Expense, Net [Member] | Fair Value Of Derivatives Not Designated As Hedging Instruments [Member]
    
Derivatives, Fair Value [Line Items]    
Amount of (Loss) Gain Recognized in Income on Derivative$ 4,720,000$ (7,148,000)$ (10,130,000)$ 7,159,000