COMMITMENTS AND CONTINGENCIES Rollforward of Environmental Liability and Related Assets (Detail) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2021 |
Mar. 31, 2020 |
|
| Loss Contingency Accrual [Roll Forward] | ||
| Environmental liability - beginning balance | $ 58.3 | $ 61.9 |
| Payments | (2.0) | (1.6) |
| Foreign currency | (0.1) | (0.2) |
| Environmental liability - ending balance | 56.1 | 58.5 |
| Continuing Operations [Member] | ||
| Loss Contingency Accrual [Roll Forward] | ||
| Changes In Pre-Existing Environmental Accruals | (0.1) | 0.0 |
| Discontinued Operations [Member] | ||
| Loss Contingency Accrual [Roll Forward] | ||
| Changes In Pre-Existing Environmental Accruals | $ 0.0 | $ (1.6) |