v2.4.0.6
Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $)
In Millions, unless otherwise specified
May 31, 2012
May 31, 2011
Assets    
Derivative assets $ 281 $ 53
Fair Value, Measurements, Recurring
   
Assets    
Derivative assets 281 53
Available-for-sale securities 2,852 3,645
Total Assets 3,133 3,698
Liabilities    
Total Liabilities 55 197
Fair Value, Measurements, Recurring | U.S. Treasury securities | Cash and equivalents
   
Assets    
Available-for-sale securities 226 125
Fair Value, Measurements, Recurring | U.S. Treasury securities | Short-term investments
   
Assets    
Available-for-sale securities 927 1,473
Fair Value, Measurements, Recurring | U.S. Agency securities | Cash and equivalents
   
Assets    
Available-for-sale securities 254  
Fair Value, Measurements, Recurring | U.S. Agency securities | Short-term investments
   
Assets    
Available-for-sale securities 230 308
Fair Value, Measurements, Recurring | Commercial paper and bonds | Cash and equivalents
   
Assets    
Available-for-sale securities 159 157
Fair Value, Measurements, Recurring | Commercial paper and bonds | Short-term investments
   
Assets    
Available-for-sale securities 283 802
Fair Value, Measurements, Recurring | Money market funds | Cash and equivalents
   
Assets    
Available-for-sale securities 770 780
Fair Value, Measurements, Recurring | Non-marketable preferred stock | Other long-term assets
   
Assets    
Available-for-sale securities 3  
Fair Value, Measurements, Recurring | Foreign exchange forwards and options | Other Assets
   
Assets    
Derivative assets 265 38
Fair Value, Measurements, Recurring | Foreign exchange forwards and options | Other Liabilities
   
Liabilities    
Derivative liabilities 55 197
Fair Value, Measurements, Recurring | Embedded derivatives | Other Assets
   
Assets    
Derivative assets 1  
Fair Value, Measurements, Recurring | Interest rate swap contracts | Other Assets
   
Assets    
Derivative assets 15 15
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1
   
Assets    
Derivative assets 0 0
Available-for-sale securities 1,153 1,598
Total Assets 1,153 1,598
Liabilities    
Total Liabilities 0 0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1 | U.S. Treasury securities | Cash and equivalents
   
Assets    
Available-for-sale securities 226 125
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1 | U.S. Treasury securities | Short-term investments
   
Assets    
Available-for-sale securities 927 1,473
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1 | U.S. Agency securities | Cash and equivalents
   
Assets    
Available-for-sale securities 0  
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1 | U.S. Agency securities | Short-term investments
   
Assets    
Available-for-sale securities 0 0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1 | Commercial paper and bonds | Cash and equivalents
   
Assets    
Available-for-sale securities 0 0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1 | Commercial paper and bonds | Short-term investments
   
Assets    
Available-for-sale securities 0 0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1 | Money market funds | Cash and equivalents
   
Assets    
Available-for-sale securities 0 0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1 | Non-marketable preferred stock | Other long-term assets
   
Assets    
Available-for-sale securities 0  
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1 | Foreign exchange forwards and options | Other Assets
   
Assets    
Derivative assets 0 0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1 | Foreign exchange forwards and options | Other Liabilities
   
Liabilities    
Derivative liabilities 0 0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1 | Embedded derivatives | Other Assets
   
Assets    
Derivative assets 0  
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1 | Interest rate swap contracts | Other Assets
   
Assets    
Derivative assets 0 0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2
   
Assets    
Derivative assets 281 53
Available-for-sale securities 1,696 2,047
Total Assets 1,977 2,100
Liabilities    
Total Liabilities 55 197
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | U.S. Treasury securities | Cash and equivalents
   
Assets    
Available-for-sale securities 0 0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | U.S. Treasury securities | Short-term investments
   
Assets    
Available-for-sale securities 0 0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | U.S. Agency securities | Cash and equivalents
   
Assets    
Available-for-sale securities 254  
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | U.S. Agency securities | Short-term investments
   
Assets    
Available-for-sale securities 230 308
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | Commercial paper and bonds | Cash and equivalents
   
Assets    
Available-for-sale securities 159 157
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | Commercial paper and bonds | Short-term investments
   
Assets    
Available-for-sale securities 283 802
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | Money market funds | Cash and equivalents
   
Assets    
Available-for-sale securities 770 780
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | Non-marketable preferred stock | Other long-term assets
   
Assets    
Available-for-sale securities 0  
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | Foreign exchange forwards and options | Other Assets
   
Assets    
Derivative assets 265 38
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | Foreign exchange forwards and options | Other Liabilities
   
Liabilities    
Derivative liabilities 55 197
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | Embedded derivatives | Other Assets
   
Assets    
Derivative assets 1  
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | Interest rate swap contracts | Other Assets
   
Assets    
Derivative assets 15 15
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3
   
Assets    
Derivative assets 0 0
Available-for-sale securities 3 0
Total Assets 3  
Liabilities    
Total Liabilities 0 0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3 | U.S. Treasury securities | Cash and equivalents
   
Assets    
Available-for-sale securities 0 0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3 | U.S. Treasury securities | Short-term investments
   
Assets    
Available-for-sale securities 0 0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3 | U.S. Agency securities | Cash and equivalents
   
Assets    
Available-for-sale securities 0  
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3 | U.S. Agency securities | Short-term investments
   
Assets    
Available-for-sale securities 0 0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3 | Commercial paper and bonds | Cash and equivalents
   
Assets    
Available-for-sale securities 0 0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3 | Commercial paper and bonds | Short-term investments
   
Assets    
Available-for-sale securities 0 0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3 | Money market funds | Cash and equivalents
   
Assets    
Available-for-sale securities 0 0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3 | Non-marketable preferred stock | Other long-term assets
   
Assets    
Available-for-sale securities 3  
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3 | Foreign exchange forwards and options | Other Assets
   
Assets    
Derivative assets 0 0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3 | Foreign exchange forwards and options | Other Liabilities
   
Liabilities    
Derivative liabilities 0 0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3 | Embedded derivatives | Other Assets
   
Assets    
Derivative assets 0  
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3 | Interest rate swap contracts | Other Assets
   
Assets    
Derivative assets $ 0 $ 0