Annual report pursuant to Section 13 and 15(d)

Income Taxes (Reconciliation of Unrecognized Tax Benefits) (Details)

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Income Taxes (Reconciliation of Unrecognized Tax Benefits) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Jan. 28, 2012
Jan. 29, 2011
Jan. 30, 2010
Income Taxes [Abstract]      
Beginning balance $ 162 $ 165 $ 192
Additions for tax positions of prior years 10 21 37
Reductions for tax positions of prior years (14) (5) (1)
Settlements and effective settlements with tax authorities (45) (16) (59)
Expirations of statute (3) (3) (4)
Balance at end of year $ 110 $ 162 $ 165