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Supplemental Cash Flow Information (Tables)
12 Months Ended
May 31, 2011
Supplemental Cash Flow (Tables) Abstract  
Supplemental Cash Flow Table
    2011 2010 2009
Cash payments for:         
 Interest (net of capitalized interest) $ 93 $ 88 $ 61
            
 Income taxes $ 493 $ 322 $ 517
 Income tax refunds received   (106)   (279)   (8)
 Cash tax payments, net $ 387 $ 43 $ 509