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Taxes (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended | 23 Months Ended
--- | --- | ---
Feb. 01, 2020 | Feb. 02, 2019 | Feb. 03, 2018 | Dec. 31, 2017
Net tax deficiencies from share based payment accounting |  |  | $ 15 |
Federal income tax statutory rate | 21.00% | 21.00% | 33.70% | 35.00%
Effective Income Tax Rate Reconciliation, Percent |  |  | 2.60% |
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount | $ 0 | $ (17) | $ (584) |
Net change in the valuation allowance | 5 | 10 |  |
Federal net operating loss carryforwards | 0 |  |  |
Operating Loss Carryforwards | 218 |  |  |
State credit carryforwards | 9 |  |  |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 106 | 120 |  |
Charges (credit) to income tax expense for federal, state and local interest and penalties | $ 6 | $ 5 | $ (3) |
Maximum [Member] |  |  |  |
Operating Loss Carryforwards, Expiration Dates | Dec. 31, 2039 |  |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit | $ 56 |  |  |
Minimum [Member] |  |  |  |
Operating Loss Carryforwards, Expiration Dates | Dec. 31, 2020 |  |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit | $ 0 |  |  |

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