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Restructuring Charges (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 31, 2020 | Nov. 02, 2019 | Aug. 03, 2019 | Oct. 31, 2020 | Nov. 02, 2019
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Revenue | $ 11,853 | $ 9,764 |  | $ 30,325 | $ 28,442
Operating income | 561 | 395 |  | 1,358 | 1,042
Restructuring charges | 111 | $ (7) |  | 112 | $ 41
Mexico Exit And Corporate Reorganization [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges |  |  |  | 148 |
Restructuring Reserve | 47 |  |  | 47 |
Mexico Exit And Corporate Reorganization [Member] | Domestic [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring Reserve | 7 |  |  | 7 |
Voluntary Early Retirement [Member] | U.S. Operating Model [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges |  |  | $ 10 |  |
Cumulative Amount | 41 |  |  | 41 |
Minimum [Member] | Mexico Exit And Corporate Reorganization [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Expected charges | 50 |  |  | 50 |
Maximum [Member] | Mexico Exit And Corporate Reorganization [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Expected charges | $ 75 |  |  | $ 75 |

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