v2.4.0.6
Condensed Consolidating Financial Statements (Details 2) (USD $)
In Millions, unless otherwise specified
Nov. 30, 2011
May 31, 2011
Nov. 30, 2010
May 31, 2010
CURRENT ASSETS        
Cash and cash equivalents $ 1,896 $ 2,328 $ 1,877 $ 1,952
Receivables, less allowances 4,837 4,581    
Spare parts, supplies, fuel, prepaid expenses and other, less allowances 807 766    
Deferred income taxes 628 610    
Total current assets 8,168 8,285    
PROPERTY AND EQUIPMENT, AT COST 35,399 33,686    
Less accumulated depreciation and amortization 18,690 18,143    
Net property and equipment 16,709 15,543    
GOODWILL 2,399 2,326    
Other assets 1,176 1,231    
ASSETS 28,452 27,385    
CURRENT LIABILITIES        
Current portion of long-term debt 428 18    
Accrued salaries and employee benefits 1,390 1,268    
Accounts payable 1,646 1,702    
Accrued expenses 1,916 1,894    
Total current liabilities 5,380 4,882    
LONG-TERM DEBT, LESS CURRENT PORTION 1,251 1,667    
OTHER LONG-TERM LIABILITIES        
Deferred income taxes 1,555 1,336    
Other liabilities 4,349 4,280    
Total other long-term liabilities 5,904 5,616    
STOCKHOLDERS' INVESTMENT 15,917 15,220    
LIABILITIES AND STOCKHOLDERS' INVESTMENT 28,452 27,385    
Parent Company Member
        
CURRENT ASSETS        
Cash and cash equivalents 1,000 1,589 1,162 1,310
Receivables, less allowances 96      
Spare parts, supplies, fuel, prepaid expenses and other, less allowances 58 77    
Total current assets 1,154 1,666    
PROPERTY AND EQUIPMENT, AT COST 25 24    
Less accumulated depreciation and amortization 20 18    
Net property and equipment 5 6    
INVESTMENT IN SUBSIDIARIES 16,266 15,404    
Other assets 1,522 1,652    
ASSETS 18,947 18,728    
CURRENT LIABILITIES        
Accrued salaries and employee benefits 64 50    
Accounts payable 40      
Accrued expenses 259 198    
Total current liabilities 363 248    
LONG-TERM DEBT, LESS CURRENT PORTION 1,000 1,000    
INTERCOMPANY PAYABLE 588 1,095    
OTHER LONG-TERM LIABILITIES        
Other liabilities 1,079 1,165    
Total other long-term liabilities 1,079 1,165    
STOCKHOLDERS' INVESTMENT 15,917 15,220    
LIABILITIES AND STOCKHOLDERS' INVESTMENT 18,947 18,728    
Guarantor Subsidiaries Member
        
CURRENT ASSETS        
Cash and cash equivalents 412 279 268 258
Receivables, less allowances 3,775 3,696    
Spare parts, supplies, fuel, prepaid expenses and other, less allowances 703 645    
Deferred income taxes 609 598    
Total current assets 5,499 5,218    
PROPERTY AND EQUIPMENT, AT COST 33,645 31,916    
Less accumulated depreciation and amortization 17,609 17,071    
Net property and equipment 16,036 14,845    
GOODWILL 1,564 1,564    
INVESTMENT IN SUBSIDIARIES 2,815 2,705    
Other assets 1,039 1,039    
ASSETS 26,953 25,371    
CURRENT LIABILITIES        
Current portion of long-term debt 428 18    
Accrued salaries and employee benefits 1,172 1,071    
Accounts payable 1,337 1,385    
Accrued expenses 1,522 1,563    
Total current liabilities 4,459 4,037    
LONG-TERM DEBT, LESS CURRENT PORTION 251 667    
INTERCOMPANY PAYABLE 662 222    
OTHER LONG-TERM LIABILITIES        
Deferred income taxes 3,037 2,842    
Other liabilities 3,120 3,001    
Total other long-term liabilities 6,157 5,843    
STOCKHOLDERS' INVESTMENT 15,424 14,602    
LIABILITIES AND STOCKHOLDERS' INVESTMENT 26,953 25,371    
Non Guarantor Subsidiaries Member
        
CURRENT ASSETS        
Cash and cash equivalents 599 546 503 443
Receivables, less allowances 1,010 912    
Spare parts, supplies, fuel, prepaid expenses and other, less allowances 46 44    
Deferred income taxes 19 12    
Total current assets 1,674 1,514    
PROPERTY AND EQUIPMENT, AT COST 1,729 1,746    
Less accumulated depreciation and amortization 1,061 1,054    
Net property and equipment 668 692    
INTERCOMPANY RECEIVABLE 1,250 1,317    
GOODWILL 835 762    
Other assets 103 63    
ASSETS 4,530 4,348    
CURRENT LIABILITIES        
Accrued salaries and employee benefits 154 147    
Accounts payable 428 430    
Accrued expenses 135 133    
Total current liabilities 717 710    
OTHER LONG-TERM LIABILITIES        
Deferred income taxes 6 17    
Other liabilities 150 114    
Total other long-term liabilities 156 131    
STOCKHOLDERS' INVESTMENT 3,657 3,507    
LIABILITIES AND STOCKHOLDERS' INVESTMENT 4,530 4,348    
Consolidation Eliminations Member
        
CURRENT ASSETS        
Cash and cash equivalents (115) (86) (56) (59)
Receivables, less allowances (44) (27)    
Total current assets (159) (113)    
INTERCOMPANY RECEIVABLE (1,250) (1,317)    
INVESTMENT IN SUBSIDIARIES (19,081) (18,109)    
Other assets (1,488) (1,523)    
ASSETS (21,978) (21,062)    
CURRENT LIABILITIES        
Accounts payable (159) (113)    
Total current liabilities (159) (113)    
INTERCOMPANY PAYABLE (1,250) (1,317)    
OTHER LONG-TERM LIABILITIES        
Deferred income taxes (1,488) (1,523)    
Total other long-term liabilities (1,488) (1,523)    
STOCKHOLDERS' INVESTMENT (19,081) (18,109)    
LIABILITIES AND STOCKHOLDERS' INVESTMENT $ (21,978) $ (21,062)