Annual report pursuant to Section 13 and 15(d)

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

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Retirement Plans (Reconciliation Of Benefit Obligations, Plan Assets, And Funded Status Of The Pension Plan) (Details) (Pension Plan [Member], USD $)
In Millions, unless otherwise specified
12 Months Ended
Jan. 28, 2012
Jan. 29, 2011
Company contributions $ 375 $ 825
Funded status at end of year (389) (220)
Other liabilities (389) (220)
Net actuarial loss 1,558 1,116
Prior service credit (1) (2)
Total included in accumulated other comprehensive income 1,557 1,114
Change in projected benefit obligation [Member]
   
Projected benefit obligation, beginning of year 3,024 2,879
Service cost 102 99
Interest cost 160 158
Actuarial loss 375 103
Benefits paid (203) (215)
Projected benefit obligation, end of year 3,458 3,024
Fair value of plan assets [Member]
   
Benefits paid (203) (215)
Fair value of plan assets, beginning of year 2,804 1,865
Actual return on plan assets 93 329
Company contributions 375 825
Fair value of plan assets, end of year $ 3,069 $ 2,804