v2.4.0.6
Fair Value of Derivative Instruments Included within Consolidated Balance Sheet (Detail) (USD $)
In Millions, unless otherwise specified
May 31, 2012
May 31, 2011
Derivatives, Fair Value [Line Items]    
Asset Derivatives $ 281 $ 53
Liability Derivatives 55 197
Designated as Hedging Instrument
   
Derivatives, Fair Value [Line Items]    
Asset Derivatives 225 44
Liability Derivatives 35 180
Designated as Hedging Instrument | Foreign exchange forwards and options | Prepaid expenses and other current assets
   
Derivatives, Fair Value [Line Items]    
Asset Derivatives 203 22
Designated as Hedging Instrument | Foreign exchange forwards and options | Deferred income taxes and other long-term assets
   
Derivatives, Fair Value [Line Items]    
Asset Derivatives 7 7
Designated as Hedging Instrument | Foreign exchange forwards and options | Accrued liabilities
   
Derivatives, Fair Value [Line Items]    
Liability Derivatives 35 170
Designated as Hedging Instrument | Foreign exchange forwards and options | Deferred income taxes and other long-term liabilities
   
Derivatives, Fair Value [Line Items]    
Liability Derivatives 0 10
Designated as Hedging Instrument | Interest rate swap contracts | Prepaid expenses and other current assets
   
Derivatives, Fair Value [Line Items]    
Asset Derivatives 0 0
Designated as Hedging Instrument | Interest rate swap contracts | Deferred income taxes and other long-term assets
   
Derivatives, Fair Value [Line Items]    
Asset Derivatives 15 15
Designated as Hedging Instrument | Interest rate swap contracts | Accrued liabilities
   
Derivatives, Fair Value [Line Items]    
Liability Derivatives 0 0
Designated as Hedging Instrument | Interest rate swap contracts | Deferred income taxes and other long-term liabilities
   
Derivatives, Fair Value [Line Items]    
Liability Derivatives 0 0
Derivatives not designated as hedging instruments
   
Derivatives, Fair Value [Line Items]    
Asset Derivatives 56 9
Liability Derivatives 20 17
Derivatives not designated as hedging instruments | Foreign exchange forwards and options | Prepaid expenses and other current assets
   
Derivatives, Fair Value [Line Items]    
Asset Derivatives 55 9
Derivatives not designated as hedging instruments | Foreign exchange forwards and options | Deferred income taxes and other long-term assets
   
Derivatives, Fair Value [Line Items]    
Asset Derivatives 0 0
Derivatives not designated as hedging instruments | Foreign exchange forwards and options | Accrued liabilities
   
Derivatives, Fair Value [Line Items]    
Liability Derivatives 20 16
Derivatives not designated as hedging instruments | Foreign exchange forwards and options | Deferred income taxes and other long-term liabilities
   
Derivatives, Fair Value [Line Items]    
Liability Derivatives 0 1
Derivatives not designated as hedging instruments | Embedded derivatives | Prepaid expenses and other current assets
   
Derivatives, Fair Value [Line Items]    
Asset Derivatives 1 0
Derivatives not designated as hedging instruments | Embedded derivatives | Accrued liabilities
   
Derivatives, Fair Value [Line Items]    
Liability Derivatives $ 0 $ 0