Quarterly report pursuant to Section 13 or 15(d)

Benefit Plans (Net Periodic Benefit Cost) (Details)

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Benefit Plans (Net Periodic Benefit Cost) (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 9 Months Ended
Nov. 02, 2013
Oct. 27, 2012
Nov. 02, 2013
Oct. 27, 2012
Pension Plan [Member]
        
Service cost $ 28 $ 30 $ 84 $ 88
Interest cost 36 40 107 118
Expected return on assets (60) (64) (181) (190)
Recognition of net actuarial (gain) loss 34 35 105 106
Amortization of prior service credit 0 (1) 0 (1)
Defined Benefit Plan, Net Periodic Benefit Cost 38 40 115 121
Supplemental Employee Retirement Plans, Defined Benefit [Member]
        
Service cost 2 1 5 4
Interest cost 8 9 24 26
Recognition of net actuarial (gain) loss 4 4 14 13
Amortization of prior service credit 0 0 0 0
Defined Benefit Plan, Net Periodic Benefit Cost 14 14 43 43
Other Postretirement Benefit Plans, Defined Benefit [Member]
        
Service cost 0 0 0 0
Interest cost 2 3 7 9
Recognition of net actuarial (gain) loss 0 (1) (2) (3)
Amortization of prior service credit 0 0 0 0
Defined Benefit Plan, Net Periodic Benefit Cost $ 2 $ 2 $ 5 $ 6