Annual report pursuant to Section 13 and 15(d)

Retirement Plans (Net Periodic Benefit Cost) (Details)

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Retirement Plans (Net Periodic Benefit Cost) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Feb. 02, 2013
Jan. 28, 2012
Pension Plan [Member]
Jan. 29, 2011
Pension Plan [Member]
Jan. 30, 2010
Pension Plan [Member]
Jan. 28, 2012
Pension Plan [Member]
Other Comprehensive Income [Member]
Jan. 29, 2011
Pension Plan [Member]
Other Comprehensive Income [Member]
Jan. 30, 2010
Pension Plan [Member]
Other Comprehensive Income [Member]
Jan. 28, 2012
Pension Plan [Member]
Net Periodic Pension Cost [Member]
Jan. 29, 2011
Pension Plan [Member]
Net Periodic Pension Cost [Member]
Jan. 30, 2010
Pension Plan [Member]
Net Periodic Pension Cost [Member]
Service cost               $ 102 $ 99 $ 81
Interest cost               160 158 173
Expected return on assets               (248) (218) (187)
Net actuarial (gain) loss         530 (9) 311      
Amortization of net actuarial (gain) loss 3 139     (88) (61) 0 88 61 0
Amortization of prior service credit         1 1 1 (1) (1) (1)
Total net periodic benefit cost               101 99 66
Total recognized in other comprehensive income         443 (69) 312      
Total recognized in net periodic benefit cost and other comprehensive income   $ 544 $ 30 $ 378