ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| AOCI Attributable to Parent, Net of Tax [Roll Forward] | |||
| Beginning balance | $ (540.3) | $ (129.6) | $ 1,120.0 |
| Other comprehensive income (loss) | (23.7) | (91.7) | 144.0 |
| Ending balance | (704.8) | (540.3) | (129.6) |
| Accumulated Other Comprehensive Income (Loss), Net of Tax | 18.1 | 41.8 | 133.5 |
| Foreign currency translation | |||
| AOCI Attributable to Parent, Net of Tax [Roll Forward] | |||
| Beginning balance | 43.2 | 133.8 | (8.3) |
| Other comprehensive income (loss) | (10.3) | (90.6) | 142.1 |
| Ending balance | 32.9 | 43.2 | 133.8 |
| Pension | |||
| AOCI Attributable to Parent, Net of Tax [Roll Forward] | |||
| Beginning balance | (1.4) | (0.3) | (2.2) |
| Actuarial (loss) gain deferred during the period, net of income taxes | (13.4) | (1.1) | 1.9 |
| Amortization of deferred losses into earnings | 0.0 | 0.0 | 0.0 |
| Ending balance | (14.8) | (1.4) | (0.3) |
| Pension actuarial losses deferred , Tax | $ 0.1 | $ 0.0 | $ 0.0 |