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Retirement Plans (Narrative) (Details) $ in Millions | 12 Months Ended
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Feb. 02, 2019 | Feb. 03, 2018 USD ($) yr | Jan. 28, 2017 USD ($) d | Jan. 30, 2016 USD ($)
Number of hours required for participation in defined benefit and defined contribution plans |  | 1,000 |  |
Liability under qualified defined contribution plan |  | $ 101 | $ 102 |
Minimum [Member] |  |  |  |
Range of restrictions on investment redemption frequency, number of times allowed per year | d |  |  | 4 |
Maximum [Member] |  |  |  |
Range of restrictions on investment redemption frequency, number of times allowed per year | d |  |  | 365 |
Supplemental Employee Retirement Plan |  |  |  |
Discount rate |  | 3.78% | 4.07% |
Accumulated benefit obligation for defined benefit plan |  | $ 703 | $ 747 |
Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year |  | 9 |  |
Company contributions to defined benefit pension plan |  | $ 86 | $ 124 |
Discount rate for interest cost (percent) |  |  |  | 3.55%
Supplemental Employee Retirement Plan | Minimum [Member] |  |  |  |
Discount rate for interest cost (percent) |  | 3.10% | 2.65% |
Supplemental Employee Retirement Plan | Maximum [Member] |  |  |  |
Discount rate for interest cost (percent) |  | 3.26% | 3.16% |
Pension Plan [Member] |  |  |  |
Discount rate |  | 3.74% | 4.00% |
Expected long-term return on plan assets |  | 7.00% | 7.00% | 7.00%
Accumulated benefit obligation for defined benefit plan |  | $ 3,268 | $ 3,464 |
Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year |  | 32 |  |
Unfunded commitments to certain of these investments |  | 64 | 72 |
Company contributions to defined benefit pension plan |  | $ 0 | $ 0 |
Discount rate for service cost (percent) |  |  |  | 3.55%
Discount rate for interest cost (percent) |  |  |  | 3.55%
Pension Plan [Member] | Minimum [Member] |  |  |  |
Range of investment lock-up period, in years | yr |  | 1 |  |
Discount rate for service cost (percent) |  | 3.75% | 3.79% |
Discount rate for interest cost (percent) |  | 3.12% | 2.96% |
Pension Plan [Member] | Maximum [Member] |  |  |  |
Range of investment lock-up period, in years | yr |  | 10 |  |
Discount rate for service cost (percent) |  | 4.06% | 4.26% |
Discount rate for interest cost (percent) |  | 3.31% | 3.30% |
Pension Plan [Member] | Equity securities [Member] |  |  |  |
Target allocation for equity securities in defined benefit plan |  | 30.00% |  |
Pension Plan [Member] | Debt Securities [Member] |  |  |  |
Target allocation for equity securities in defined benefit plan |  | 60.00% |  |
Pension Plan [Member] | Real Estate Funds [Member] |  |  |  |
Target allocation for equity securities in defined benefit plan |  | 5.00% |  |
Pension Plan [Member] | Private equity [Member] |  |  |  |
Target allocation for equity securities in defined benefit plan |  | 5.00% |  |
Defined Contribution Qualified Plan [Member] | Other Postretirement Benefits Plan [Member] |  |  |  |
Employee retirement plan expense |  | $ 93 | $ 94 | $ 88
Non qualified defined contribution plan [Member] | Other Postretirement Benefits Plan [Member] |  |  |  |
Employee retirement plan expense |  | 1 | 2 | $ 2
Investments |  | 25 | 20 |
Other Liabilities [Member] | Non qualified defined contribution plan [Member] | Other Postretirement Benefits Plan [Member] |  |  |  |
Liability under non-qualified defined contribution plan |  | 25 | 20 |
Accounts Payable and Accrued Liabilities [Member] | Non qualified defined contribution plan [Member] | Other Postretirement Benefits Plan [Member] |  |  |  |
Liability under non-qualified defined contribution plan |  | $ 1 | $ 2 |
Subsequent Event [Member] | Pension Plan [Member] |  |  |  |
Expected long-term return on plan assets | 6.75% |  |  |

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- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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