Annual report pursuant to Section 13 and 15(d)

Retirement Plans (Reconciliation Of Benefit Obligations, Plan Assets, And Funded Status Of The Supplementary Retirement Plan) (Details)

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Retirement Plans (Reconciliation Of Benefit Obligations, Plan Assets, And Funded Status Of The Supplementary Retirement Plan) (Details) (Supplementary Retirement Plan [Member], USD $)
In Millions, unless otherwise specified
12 Months Ended
Jan. 28, 2012
Jan. 29, 2011
Funded status at end of year $ (771) $ (688)
Accounts payable and accrued liabilities (55) (52)
Other liabilities (716) (636)
Net actuarial (gain) loss 195 113
Prior service credit (1) (2)
Total included in accumulated other comprehensive income 194 111
Change in projected benefit obligation [Member]
   
Projected benefit obligation, beginning of year 688 680
Service cost 6 6
Interest cost 36 37
Actuarial loss 90 22
Benefits paid (49) (57)
Projected benefit obligation, end of year 771 688
Fair value of plan assets [Member]
   
Benefits paid (49) (57)
Fair value of plan assets, beginning of year 0 0
Company contributions 49 57
Fair value of plan assets, end of year $ 0 $ 0