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Taxes (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended | 23 Months Ended
--- | --- | ---
Feb. 02, 2019 | Feb. 03, 2018 | Jan. 28, 2017 | Dec. 31, 2017
Net tax deficiencies from share based payment accounting |  | $ 15 |  |
Federal income tax statutory rate | 21.00% | 33.70% | 35.00% | 35.00%
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount | $ (17) | $ (584) | $ 0 |
Net change in the valuation allowance | 10 | $ 29 |  |
Valuation Allowance, Deferred Tax Asset, Explanation of Change |  | 11 |  |
Federal net operating loss carryforwards | 0 |  |  |
Operating Loss Carryforwards | 374 |  |  |
State credit carryforwards | 11 |  |  |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 120 | $ 111 |  |
Charges (credit) to income tax expense for federal, state and local interest and penalties | $ 5 | $ (3) | $ 2 |
Maximum [Member] |  |  |  |
Operating Loss Carryforwards, Expiration Dates | Dec. 31, 2038 |  |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit | $ 55 |  |  |
Minimum [Member] |  |  |  |
Operating Loss Carryforwards, Expiration Dates | Dec. 31, 2019 |  |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit | $ 0 |  |  |

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