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Financial Instruments, Derivative Instruments And Hedging (Summary Of Gains (Losses) Recognized In Operations And Accumulated Other Comprehensive Income (Loss) For Derivatives) (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (Loss) on Derivative Ineffectiveness and Amounts Excluded from Effectiveness Testing   $ 0     
Gain (Loss) Recognized in Income on Derivative (156)   1,316  
Cash Flow Derivatives Not Designated As Hedging Instruments [Member]
       
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (Loss) Recognized on Derivative, Discontinued Operations 15   3  
Gain (Loss) Recognized in Income on Derivative (141)   1,313  
Foreign Exchange Contracts [Member] | Cash Flow Derivatives Not Designated As Hedging Instruments [Member] | Revenue [Member]
       
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (Loss) Recognized in Income on Derivative (15) 2,592 (3) 1,397
Foreign Exchange Contracts [Member] | Cash Flow Derivatives Not Designated As Hedging Instruments [Member] | Other Income [Member]
       
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (Loss) Recognized in Income on Derivative (141)   1,316  
Foreign Exchange Contracts [Member] | Derivatives In Cash Flow Hedging Relationships [Member]
       
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) (213) 4,988 (498) (10,553)
Foreign Exchange Contracts [Member] | Derivatives In Cash Flow Hedging Relationships [Member] | Revenue [Member]
       
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) (1,134) (6,785) (6,290) (12,966)
Gain (Loss) on Derivative Ineffectiveness and Amounts Excluded from Effectiveness Testing 28 (1,140) 208 (66)
Foreign Exchange Contracts [Member] | Derivatives In Cash Flow Hedging Relationships [Member] | Interest Income [Member]
       
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (Loss) on Derivative Ineffectiveness and Amounts Excluded from Effectiveness Testing       $ (1)