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NOTES PAYABLE AND OTHER BORROWINGS Table (Details) (USD $)
In Millions
12 Months Ended
May 31, 2010
May 31, 2011
Mar. 14, 2011
May 11, 2010
Feb. 28, 2006
Commercial Paper Program and Commercial Paper Notes (Narrative) [Abstract]          
Commercial paper capacity   $ 0   $ 3,000 $ 5,000
Issuance of Commercial Paper 2,800        
Principal Payments for All Borrowings [Abstract]          
Fiscal 2012   1,150      
Fiscal 2013   1,250      
Fiscal 2014   0      
Fiscal 2015   1,500      
Fiscal 2016   2,000      
Thereafter   10,000      
Total   15,900      
Amounts outstanding under $3.0 billion, five-year Revolving Credit Agreement     $ 0