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Retirement Plans (Fair Value Of Pension Plan Assets) (Details) - USD ($) $ in Millions | Jan. 28, 2017 | Jan. 30, 2016
--- | --- | ---
Fair value of pension plan assets | $ 112 | $ 132
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair value of pension plan assets | 20 | 13
Significant Observable Inputs (Level 2) [Member] |  |
Fair value of pension plan assets | 92 | 119
Significant Unobservable Inputs (Level 3) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] |  |
Fair value of pension plan assets | 3,377 | 3,246
Pension Plan [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair value of pension plan assets | 1,421 | 1,311
Pension Plan [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair value of pension plan assets | 821 | 907
Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Cash and Cash Equivalents [Member] |  |
Fair value of pension plan assets |  | 15
Pension Plan [Member] | Cash and Cash Equivalents [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair value of pension plan assets |  | 15
Pension Plan [Member] | Cash and Cash Equivalents [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair value of pension plan assets |  | 0
Pension Plan [Member] | Cash and Cash Equivalents [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair value of pension plan assets |  | 0
Pension Plan [Member] | Money market securities [Member] |  |
Fair value of pension plan assets | 14 | 36
Pension Plan [Member] | Money market securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Money market securities [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair value of pension plan assets | 14 | 36
Pension Plan [Member] | Money market securities [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Money market pooled funds [Member] |  |
Fair value of pension plan assets | 74 | 46
Pension Plan [Member] | Money market pooled funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair value of pension plan assets | 74 | 46
Pension Plan [Member] | Money market pooled funds [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Money market pooled funds [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Equity securities [Member] | UNITED STATES |  |
Fair value of pension plan assets | 309 | 280
Pension Plan [Member] | Equity securities [Member] | United States pooled funds [Member] |  |
Fair value of pension plan assets | 654 | 391
Pension Plan [Member] | Equity securities [Member] | International [Member] |  |
Fair value of pension plan assets | 649 | 575
Pension Plan [Member] | Equity securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | UNITED STATES |  |
Fair value of pension plan assets | 309 | 280
Pension Plan [Member] | Equity securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | United States pooled funds [Member] |  |
Fair value of pension plan assets | 446 | 207
Pension Plan [Member] | Equity securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | International [Member] |  |
Fair value of pension plan assets | 131 | 336
Pension Plan [Member] | Equity securities [Member] | Significant Observable Inputs (Level 2) [Member] | UNITED STATES |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Equity securities [Member] | Significant Observable Inputs (Level 2) [Member] | United States pooled funds [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Equity securities [Member] | Significant Observable Inputs (Level 2) [Member] | International [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Equity securities [Member] | Significant Unobservable Inputs (Level 3) [Member] | UNITED STATES |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Equity securities [Member] | Significant Unobservable Inputs (Level 3) [Member] | United States pooled funds [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Equity securities [Member] | Significant Unobservable Inputs (Level 3) [Member] | International [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | U.S. Treasury bonds [Member] |  |
Fair value of pension plan assets | 194 | 233
Pension Plan [Member] | U.S. Treasury bonds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | U.S. Treasury bonds [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair value of pension plan assets | 194 | 233
Pension Plan [Member] | U.S. Treasury bonds [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Other Government bonds [Member] |  |
Fair value of pension plan assets | 40 | 41
Pension Plan [Member] | Other Government bonds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Other Government bonds [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair value of pension plan assets | 40 | 41
Pension Plan [Member] | Other Government bonds [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Agency backed bonds [Member] |  |
Fair value of pension plan assets | 24 | 31
Pension Plan [Member] | Agency backed bonds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Agency backed bonds [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair value of pension plan assets | 24 | 31
Pension Plan [Member] | Agency backed bonds [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Corporate bonds [Member] |  |
Fair value of pension plan assets | 453 | 433
Pension Plan [Member] | Corporate bonds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Corporate bonds [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair value of pension plan assets | 453 | 433
Pension Plan [Member] | Corporate bonds [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Mortgage-backed securities and forwards [Member] |  |
Fair value of pension plan assets | 85 | 112
Pension Plan [Member] | Mortgage-backed securities and forwards [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Mortgage-backed securities and forwards [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair value of pension plan assets | 85 | 112
Pension Plan [Member] | Mortgage-backed securities and forwards [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Asset-backed securities [Member] |  |
Fair value of pension plan assets | 17 | 28
Pension Plan [Member] | Asset-backed securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Asset-backed securities [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair value of pension plan assets | 17 | 28
Pension Plan [Member] | Asset-backed securities [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Pooled funds [Member] |  |
Fair value of pension plan assets | 461 | 427
Pension Plan [Member] | Pooled funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair value of pension plan assets | 461 | 427
Pension Plan [Member] | Pooled funds [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Pooled funds [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Real Estate [Member] |  |
Fair value of pension plan assets | 223 | 238
Pension Plan [Member] | Real Estate [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Real Estate [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Real Estate [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Hedge Funds [Member] |  |
Fair value of pension plan assets |  | 179
Pension Plan [Member] | Hedge Funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair value of pension plan assets |  | 0
Pension Plan [Member] | Hedge Funds [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair value of pension plan assets |  | 0
Pension Plan [Member] | Hedge Funds [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair value of pension plan assets |  | 0
Pension Plan [Member] | Private equity [Member] |  |
Fair value of pension plan assets | 186 | 188
Pension Plan [Member] | Private equity [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Private equity [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Private equity [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Derivatives in a positive position [Member] |  |
Fair value of pension plan assets | 13 | 15
Pension Plan [Member] | Derivatives in a positive position [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Derivatives in a positive position [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair value of pension plan assets | 13 | 15
Pension Plan [Member] | Derivatives in a positive position [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Derivatives in a negative position [Member] |  |
Fair value of pension plan assets | (19) | (22)
Pension Plan [Member] | Derivatives in a negative position [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair value of pension plan assets | 0 | 0
Pension Plan [Member] | Derivatives in a negative position [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair value of pension plan assets | (19) | (22)
Pension Plan [Member] | Derivatives in a negative position [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair value of pension plan assets | $ 0 | $ 0

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