|
Benefit Plans (Net Periodic Benefit Cost) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Aug. 03, 2013
|
Jul. 28, 2012
|
Aug. 03, 2013
|
Jul. 28, 2012
|
|
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Pension Plan [Member]
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| Service cost | $ 28 | $ 30 | $ 56 | $ 58 |
| Interest cost | 35 | 39 | 71 | 78 |
| Expected return on assets | (61) | (63) | (121) | (126) |
| Recognition of net actuarial (gain) loss | 36 | 36 | 71 | 71 |
| Amortization of prior service credit | 0 | 0 | 0 | 0 |
| Defined Benefit Plan, Net Periodic Benefit Cost | 38 | 42 | 77 | 81 |
|
Supplemental Employee Retirement Plans, Defined Benefit [Member]
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| Service cost | 1 | 1 | 3 | 3 |
| Interest cost | 8 | 9 | 16 | 17 |
| Recognition of net actuarial (gain) loss | 6 | 5 | 10 | 9 |
| Amortization of prior service credit | 0 | 0 | 0 | 0 |
| Defined Benefit Plan, Net Periodic Benefit Cost | 15 | 15 | 29 | 29 |
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Other Postretirement Benefit Plans, Defined Benefit [Member]
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| Service cost | 0 | 0 | 0 | 0 |
| Interest cost | 2 | 3 | 5 | 6 |
| Recognition of net actuarial (gain) loss | (1) | (1) | (2) | (2) |
| Amortization of prior service credit | 0 | 0 | 0 | 0 |
| Defined Benefit Plan, Net Periodic Benefit Cost | $ 1 | $ 2 | $ 3 | $ 4 |