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Retirement Plans (Narrative) (Details) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jul. 31, 2021 | Jan. 29, 2022 | Jan. 30, 2021 | Feb. 01, 2020
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Number of hours required for participation in defined benefit and defined contribution plans |  | 1,000 hours or more |  |
Liability under qualified defined contribution plan |  | $ 83 | $ 74 |
Settlement charges |  | 96 | 84 | $ 58
Defined benefit plan, amount of transferred pension plan assets | $ 256 |  |  |
Pension Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Settlement charges |  | $ (96) | $ (74) | $ (45)
Expected long-term return on plan assets |  | 5.75% | 6.25% | 6.50%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Change Due to Subsequent Interim Measurement, Weighted-Average Expected Long-term Rate of Return on Plan Assets |  | 4.60% |  |
Unfunded commitments to certain of these investments |  | $ 37 | $ 39 |
Pension Plan [Member] | Minimum [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Range of investment lock-up period, in years |  | 1 year | 1 year |
Pension Plan [Member] | Maximum [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Range of investment lock-up period, in years |  | 8 years | 8 years |
Pension Plan [Member] | Equity securities [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Target allocation for equity securities in defined benefit plan |  | 5.00% |  |
Pension Plan [Member] | Debt Securities [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Target allocation for equity securities in defined benefit plan |  | 88.00% |  |
Pension Plan [Member] | Real Estate Funds [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Target allocation for equity securities in defined benefit plan |  | 1.00% |  |
Pension Plan [Member] | Private equity [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Target allocation for equity securities in defined benefit plan |  | 6.00% |  |
Defined Contribution Qualified Plan [Member] | Other Postretirement Benefits Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Employee retirement plan expense |  | $ 76 | $ 68 | $ 96
Non qualified defined contribution plan [Member] | Other Postretirement Benefits Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Employee retirement plan expense |  | 1 | 1 | $ 2
Investments |  | 39 | 36 |
Non qualified defined contribution plan [Member] | Other Postretirement Benefits Plan [Member] | Other Liabilities [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Liability under non-qualified defined contribution plan |  | 39 | 36 |
Non qualified defined contribution plan [Member] | Other Postretirement Benefits Plan [Member] | Accounts Payable and Accrued Liabilities [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Liability under non-qualified defined contribution plan |  | $ 1 | $ 1 |

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