EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
|
| Earnings Per Share [Abstract] | ||||
| Net income (loss) | $ 17.5 | $ 5.9 | $ (21.4) | $ 61.3 |
| Basic shares (in shares) | 165.2 | 77.6 | 165.2 | 77.5 |
| Basic net income (loss) per share (in dollars per share) | $ 0.11 | $ 0.08 | $ (0.13) | $ 0.79 |
| Earnings Per Share, Diluted [Abstract] | ||||
| Basic shares (in shares) | 165.2 | 77.6 | 165.2 | 77.5 |
| Stock-based compensation (in shares) | 1.3 | 0.7 | 0.0 | 1.0 |
| Diluted shares (in shares) | 166.5 | 78.3 | 165.2 | 78.5 |
| Diluted net income (loss) per share (in dollars per share) | $ 0.11 | $ 0.08 | $ (0.13) | $ 0.78 |
| Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 1.9 | 2.4 | 6.9 | 1.4 |