|
Benefit Plans (Net Periodic Benefit Cost) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Aug. 02, 2014
|
Aug. 03, 2013
|
Aug. 02, 2014
|
Aug. 03, 2013
|
|
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Pension Plan [Member]
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| Service cost | $ 1 | $ 28 | $ 3 | $ 56 |
| Interest cost | 37 | 35 | 75 | 71 |
| Expected return on assets | (62) | (61) | (123) | (121) |
| Recognition of net actuarial (gain) loss | 7 | 36 | 13 | 71 |
| Amortization of prior service credit | 0 | 0 | 0 | 0 |
| Defined Benefit Plan, Net Periodic Benefit Cost | (17) | 38 | (32) | 77 |
|
Supplemental Employee Retirement Plans, Defined Benefit [Member]
|
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| Service cost | 0 | 1 | 0 | 3 |
| Interest cost | 9 | 8 | 17 | 16 |
| Recognition of net actuarial (gain) loss | 1 | 6 | 2 | 10 |
| Amortization of prior service credit | 0 | 0 | 0 | 0 |
| Defined Benefit Plan, Net Periodic Benefit Cost | 10 | 15 | 19 | 29 |
|
Other Postretirement Benefit Plans, Defined Benefit [Member]
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| Service cost | 0 | 0 | 0 | 0 |
| Interest cost | 2 | 2 | 4 | 5 |
| 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 | $ 1 | $ 2 | $ 3 |