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CASH, CASH EQUIVALENTS AND MARKETABLE SECURITIES (Tables)
 12 Months Ended
May 31, 2013
Cash, Cash Equivalents and Marketable Securities [Abstract]  
Cash, Cash Equivalents and Marketable Securities

 

 

May 31,

(in millions)

 

2013

 

2012

Commercial paper debt securities

 

$

14,043

 

$

          13,954

Corporate debt securities and other

 

 

 4,935

 

 

    2,337

Total investments

 

$

 18,978

 

$

    16,291

Investments classified as cash equivalents

 

$

 1,375

 

$

        570

Investments classified as marketable securities

 

$

 17,603

 

$

    15,721