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Segments (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Aug. 27, 2011
segments
Aug. 28, 2010
Aug. 27, 2011
Aug. 28, 2010
Feb. 26, 2011
Business segment information          
Total revenue $ 11,347 $ 11,339 $ 22,287 $ 22,126  
Operating income (loss) 287 411 569 724  
Other income (expense)          
Investment income and other 6 13 18 25  
Interest expense (34) (21) (65) (44)  
Earnings before income tax expense and equity in loss of affiliates 259 403 522 705  
Total Assets 18,829 17,362 18,829 17,362 17,849
Number of Segments 2        
Domestic
         
Business segment information          
Total revenue 8,311 8,436 16,170 16,359  
Operating income (loss) 303 407 537 705  
Other income (expense)          
Total Assets 10,360 9,818 10,360 9,818 9,610
International
         
Business segment information          
Total revenue 3,036 2,903 6,117 5,767  
Operating income (loss) (16) 4 32 19  
Other income (expense)          
Total Assets $ 8,469 $ 7,544 $ 8,469 $ 7,544 $ 8,239