Earnings/(Loss) per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions |
3 Months Ended | |
|---|---|---|
Apr. 30, 2016 |
May. 02, 2015 |
|
| Earnings Per Share [Abstract] | ||
| Net income/(loss) | $ (68) | $ (150) |
| Weighted average common shares outstanding (basic shares) | 307.2 | 305.5 |
| Weighted average shares assuming dilution (diluted shares) | 307.2 | 305.5 |
| Basic (in dollars per share) | $ (0.22) | $ (0.49) |
| Diluted (in dollars per share) | $ (0.22) | $ (0.49) |
| Stock options, restricted stock awards and warrant | 35.2 | 31.6 |