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Income Taxes (Components Of The Provision For Income Taxes) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Jan. 29, 2011
Jan. 30, 2010
Jan. 31, 2009
Income Taxes [Abstract]      
Current federal $ 497 $ 561 $ 480
Current state 60 69 59
Deferred federal 124 35 42
Deferred state 11 3 4
Provision for income taxes $ 692 $ 668 $ 585