v2.4.0.6
Condensed Consolidating Financial Statements (Details 4) (USD $)
In Millions, unless otherwise specified
 6 Months Ended
Nov. 30, 2011
Nov. 30, 2010
Condensed Financial Statements Captions [Line Items]    
Cash provided by operating activities $ 2,168 $ 2,011
Investing Activities:    
Capital expenditures (2,217) (2,059)
Business acquisition, net of cash acquired (114)  
Proceeds from asset dispositions and other 15 7
Cash used in investing activities (2,316) (2,052)
Financing Activities:    
Principal payments on debt (18) (12)
Proceeds from stock issuances 32 25
Excess tax benefit on the exercise of stock options 5 4
Dividends paid (82) (76)
Purchase of treasury stock (197)  
Cash used in financing activities (260) (59)
Effect of exchange rate changes on cash (24) 25
Net decrease in cash and cash equivalents (432) (75)
Cash and cash equivalents at beginning of period 2,328 1,952
Cash and cash equivalents at end of period 1,896 1,877
Parent Company Member
    
Condensed Financial Statements Captions [Line Items]    
Cash provided by operating activities 135 (6)
Investing Activities:    
Capital expenditures (1) (1)
Cash used in investing activities (1) (1)
Financing Activities:    
Net transfers from (to) Parent (481) (94)
Proceeds from stock issuances 32 25
Excess tax benefit on the exercise of stock options 5 4
Dividends paid (82) (76)
Purchase of treasury stock (197)  
Cash used in financing activities (723) (141)
Net decrease in cash and cash equivalents (589) (148)
Cash and cash equivalents at beginning of period 1,589 1,310
Cash and cash equivalents at end of period 1,000 1,162
Guarantor Subsidiaries Member
    
Condensed Financial Statements Captions [Line Items]    
Cash provided by operating activities 1,814 1,755
Investing Activities:    
Capital expenditures (2,161) (1,968)
Proceeds from asset dispositions and other 15 6
Cash used in investing activities (2,146) (1,962)
Financing Activities:    
Net transfers from (to) Parent 484 100
Payment on loan between subsidiaries   113
Intercompany dividends 21 5
Principal payments on debt (18) (12)
Other, net (16)  
Cash used in financing activities 471 206
Effect of exchange rate changes on cash (6) 11
Net decrease in cash and cash equivalents 133 10
Cash and cash equivalents at beginning of period 279 258
Cash and cash equivalents at end of period 412 268
Non Guarantor Subsidiaries Member
    
Condensed Financial Statements Captions [Line Items]    
Cash provided by operating activities 248 259
Investing Activities:    
Capital expenditures (55) (90)
Business acquisition, net of cash acquired (114)  
Proceeds from asset dispositions and other   1
Cash used in investing activities (169) (89)
Financing Activities:    
Net transfers from (to) Parent (3) (6)
Payment on loan between subsidiaries   (113)
Intercompany dividends (21) (5)
Other, net 16  
Cash used in financing activities (8) (124)
Effect of exchange rate changes on cash (18) 14
Net decrease in cash and cash equivalents 53 60
Cash and cash equivalents at beginning of period 546 443
Cash and cash equivalents at end of period 599 503
Consolidation Eliminations Member
    
Condensed Financial Statements Captions [Line Items]    
Cash provided by operating activities (29) 3
Financing Activities:    
Net decrease in cash and cash equivalents (29) 3
Cash and cash equivalents at beginning of period (86) (59)
Cash and cash equivalents at end of period $ (115) $ (56)