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Derivatives and Hedging Foreign Exchange Risk Management Narrative (Details)
3 Months Ended
Mar. 31, 2014
Not Designated as Hedging Instrument [Member]
 
Derivative [Line Items]  
Foreign currency exposures, maximum hedging period 1 year
Cash Flow Hedging [Member]
 
Derivative [Line Items]  
Foreign currency exposures, maximum average hedging period 2 years
Foreign currency exposures, maximum hedging period 5 years
Net Investment Hedging [Member]
 
Derivative [Line Items]  
Foreign currency exposures, maximum hedging period 2 years