Earnings/(Loss) per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions |
3 Months Ended | 6 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Jul. 30, 2016 |
Aug. 01, 2015 |
Jul. 30, 2016 |
Aug. 01, 2015 |
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| Earnings Per Share [Abstract] | ||||||||
| Net income/(loss) | $ (56) | $ (117) | [1] | $ (124) | $ (267) | [1] | ||
| Weighted average common shares outstanding (basic shares) | 308.0 | 305.9 | [1] | 307.6 | 305.7 | [1] | ||
| Weighted average shares assuming dilution (diluted shares) | 308.0 | 305.9 | [1] | 307.6 | 305.7 | [1] | ||
| Basic (in dollars per share) | $ (0.18) | $ (0.38) | [1] | $ (0.40) | $ (0.87) | [1] | ||
| Diluted (in dollars per share) | $ (0.18) | $ (0.38) | [1] | $ (0.40) | $ (0.87) | [1] | ||
| Stock options, restricted stock awards and warrant | 34.8 | 34.6 | 35.0 | 33.2 | ||||
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