|
Retirement Plans (Fair Value Of Pension Plan Assets) (Details) (USD $)
In Millions, unless otherwise specified |
Jan. 28, 2012
|
Jan. 29, 2011
|
|---|---|---|
| Fair value of pension investments | $ 81 | $ 95 |
|
Pension Plan [Member]
|
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| Cash and cash equivalents | 240 | 381 |
| Fair value of pension investments | 3,099 | 2,866 |
|
Pension Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
|
||
| Cash and cash equivalents | 0 | 0 |
| Fair value of pension investments | 251 | 238 |
|
Pension Plan [Member] | Significant Observable Inputs (Level 2) [Member]
|
||
| Cash and cash equivalents | 240 | 381 |
| Fair value of pension investments | 2,315 | 2,140 |
|
Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member]
|
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| Cash and cash equivalents | 0 | 0 |
| Fair value of pension investments | 533 | 488 |
|
Pension Plan [Member] | Equity securities [Member] | International [Member]
|
||
| Fair value of pension investments | 648 | 517 |
|
Pension Plan [Member] | Equity securities [Member] | U.S. [Member]
|
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| Fair value of pension investments | 805 | 814 |
|
Pension Plan [Member] | Equity securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | International [Member]
|
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| Fair value of pension investments | 0 | 0 |
|
Pension Plan [Member] | Equity securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. [Member]
|
||
| Fair value of pension investments | 251 | 238 |
|
Pension Plan [Member] | Equity securities [Member] | Significant Observable Inputs (Level 2) [Member] | International [Member]
|
||
| Fair value of pension investments | 648 | 517 |
|
Pension Plan [Member] | Equity securities [Member] | Significant Observable Inputs (Level 2) [Member] | U.S. [Member]
|
||
| Fair value of pension investments | 554 | 576 |
|
Pension Plan [Member] | Equity securities [Member] | Significant Unobservable Inputs (Level 3) [Member] | International [Member]
|
||
| Fair value of pension investments | 0 | 0 |
|
Pension Plan [Member] | Equity securities [Member] | Significant Unobservable Inputs (Level 3) [Member] | U.S. [Member]
|
||
| Fair value of pension investments | 0 | 0 |
|
Pension Plan [Member] | U.S. Treasury bonds [Member]
|
||
| Fair value of pension investments | 128 | 54 |
|
Pension Plan [Member] | U.S. Treasury bonds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
|
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| Fair value of pension investments | 0 | 0 |
|
Pension Plan [Member] | U.S. Treasury bonds [Member] | Significant Observable Inputs (Level 2) [Member]
|
||
| Fair value of pension investments | 128 | 54 |
|
Pension Plan [Member] | U.S. Treasury bonds [Member] | Significant Unobservable Inputs (Level 3) [Member]
|
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| Fair value of pension investments | 0 | 0 |
|
Pension Plan [Member] | Other Government bonds [Member]
|
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| Fair value of pension investments | 31 | 28 |
|
Pension Plan [Member] | Other Government bonds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
|
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| Fair value of pension investments | 0 | 0 |
|
Pension Plan [Member] | Other Government bonds [Member] | Significant Observable Inputs (Level 2) [Member]
|
||
| Fair value of pension investments | 31 | 28 |
|
Pension Plan [Member] | Other Government bonds [Member] | Significant Unobservable Inputs (Level 3) [Member]
|
||
| Fair value of pension investments | 0 | 0 |
|
Pension Plan [Member] | Agency backed bonds [Member]
|
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| Fair value of pension investments | 5 | 11 |
|
Pension Plan [Member] | Agency backed bonds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
|
||
| Fair value of pension investments | 0 | 0 |
|
Pension Plan [Member] | Agency backed bonds [Member] | Significant Observable Inputs (Level 2) [Member]
|
||
| Fair value of pension investments | 5 | 11 |
|
Pension Plan [Member] | Agency backed bonds [Member] | Significant Unobservable Inputs (Level 3) [Member]
|
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| Fair value of pension investments | 0 | 0 |
|
Pension Plan [Member] | Corporate bonds [Member]
|
||
| Fair value of pension investments | 310 | 267 |
|
Pension Plan [Member] | Corporate bonds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
|
||
| Fair value of pension investments | 0 | 0 |
|
Pension Plan [Member] | Corporate bonds [Member] | Significant Observable Inputs (Level 2) [Member]
|
||
| Fair value of pension investments | 310 | 267 |
|
Pension Plan [Member] | Corporate bonds [Member] | Significant Unobservable Inputs (Level 3) [Member]
|
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| Fair value of pension investments | 0 | 0 |
|
Pension Plan [Member] | Mortgage-backed securities and forwards [Member]
|
||
| Fair value of pension investments | 112 | 107 |
|
Pension Plan [Member] | Mortgage-backed securities and forwards [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
|
||
| Fair value of pension investments | 0 | 0 |
|
Pension Plan [Member] | Mortgage-backed securities and forwards [Member] | Significant Observable Inputs (Level 2) [Member]
|
||
| Fair value of pension investments | 112 | 107 |
|
Pension Plan [Member] | Mortgage-backed securities and forwards [Member] | Significant Unobservable Inputs (Level 3) [Member]
|
||
| Fair value of pension investments | 0 | 0 |
|
Pension Plan [Member] | Asset-backed securities [Member]
|
||
| Fair value of pension investments | 21 | 19 |
|
Pension Plan [Member] | Asset-backed securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
|
||
| Fair value of pension investments | 0 | 0 |
|
Pension Plan [Member] | Asset-backed securities [Member] | Significant Observable Inputs (Level 2) [Member]
|
||
| Fair value of pension investments | 21 | 19 |
|
Pension Plan [Member] | Asset-backed securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
|
||
| Fair value of pension investments | 0 | 0 |
|
Pension Plan [Member] | Pooled funds [Member]
|
||
| Fair value of pension investments | 266 | 180 |
|
Pension Plan [Member] | Pooled funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
|
||
| Fair value of pension investments | 0 | 0 |
|
Pension Plan [Member] | Pooled funds [Member] | Significant Observable Inputs (Level 2) [Member]
|
||
| Fair value of pension investments | 266 | 180 |
|
Pension Plan [Member] | Pooled funds [Member] | Significant Unobservable Inputs (Level 3) [Member]
|
||
| Fair value of pension investments | 0 | 0 |
|
Pension Plan [Member] | Real Estate [Member]
|
||
| Fair value of pension investments | 228 | 201 |
|
Pension Plan [Member] | Real Estate [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
|
||
| Fair value of pension investments | 0 | 0 |
|
Pension Plan [Member] | Real Estate [Member] | Significant Observable Inputs (Level 2) [Member]
|
||
| Fair value of pension investments | 0 | 0 |
|
Pension Plan [Member] | Real Estate [Member] | Significant Unobservable Inputs (Level 3) [Member]
|
||
| Fair value of pension investments | 228 | 201 |
|
Pension Plan [Member] | Hedge Funds [Member]
|
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| Fair value of pension investments | 143 | 143 |
|
Pension Plan [Member] | Hedge Funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
|
||
| Fair value of pension investments | 0 | 0 |
|
Pension Plan [Member] | Hedge Funds [Member] | Significant Observable Inputs (Level 2) [Member]
|
||
| Fair value of pension investments | 0 | 0 |
|
Pension Plan [Member] | Hedge Funds [Member] | Significant Unobservable Inputs (Level 3) [Member]
|
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| Fair value of pension investments | 143 | 143 |
|
Pension Plan [Member] | Private equity [Member]
|
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| Fair value of pension investments | 162 | 144 |
|
Pension Plan [Member] | Private equity [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
|
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| Fair value of pension investments | 0 | 0 |
|
Pension Plan [Member] | Private equity [Member] | Significant Observable Inputs (Level 2) [Member]
|
||
| Fair value of pension investments | 0 | 0 |
|
Pension Plan [Member] | Private equity [Member] | Significant Unobservable Inputs (Level 3) [Member]
|
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| Fair value of pension investments | $ 162 | $ 144 |