Earnings/(Loss) per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions |
3 Months Ended | 6 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Aug. 04, 2018 |
Jul. 29, 2017 |
Aug. 04, 2018 |
Jul. 29, 2017 |
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| Earnings Per Share [Abstract] | ||||||||
| Net income/(loss) | $ (101) | $ (48) | [1] | $ (179) | $ (235) | [1] | ||
| Weighted average common shares outstanding (basic shares) | 315.7 | 310.8 | [1] | 314.8 | 310.2 | [1] | ||
| Weighted average shares assuming dilution (diluted shares) | 315.7 | 310.8 | [1] | 314.8 | 310.2 | [1] | ||
| Basic (in dollars per share) | $ (0.32) | $ (0.15) | [1] | $ (0.57) | $ (0.76) | [1] | ||
| Diluted (in dollars per share) | $ (0.32) | $ (0.15) | [1] | $ (0.57) | $ (0.76) | [1] | ||
| Stock options, restricted stock awards and warrant | 25.6 | 33.5 | 27.2 | 33.3 | ||||
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