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Derivative Instruments and Hedging Activities (Gain/Loss) (Details) (Derivatives not designated as hedging instruments, Foreign exchange contracts, Other income (expense), USD $)
In Thousands, unless otherwise specified
3 Months Ended
Dec. 31, 2011
Jan. 01, 2011
Derivatives not designated as hedging instruments | Foreign exchange contracts | Other income (expense)
   
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain or (Loss) Recognized in Income on Derivatives $ 1,982 $ 1,104