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Income Taxes (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Mar. 03, 2012
Feb. 26, 2011
Feb. 27, 2010
Reconciliation of the federal statutory income tax rate to income tax expense      
Federal income tax at the statutory rate $ 365 $ 816 $ 815
State income taxes, net of federal benefit 45 46 68
Benefit from foreign operations (96) (86) (54)
Non-taxable interest income 0 0 (1)
Other 0 3 7
Goodwill Impairment 395 0 0
Income tax expense $ 709 $ 779 $ 835
Effective income tax rate 68.00% 33.40% 35.90%