Stockholders' Equity (Components of Other Comprehensive Income/ (Loss) (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |||||
|---|---|---|---|---|---|---|---|
Aug. 04, 2018 |
Jul. 29, 2017 |
Aug. 04, 2018 |
Jul. 29, 2017 |
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| Stockholders' Equity Note [Abstract] | |||||||
| Total, net of tax | $ 1 | $ 2 | [1] | $ 7 | $ 27 | ||
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