INCOME TAXES - Principal components of income tax expense (benefit) from continuing operations (Details) - USD ($) $ in Millions |
9 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2020 |
Sep. 30, 2019 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Current: | |||||
| State and local | $ (1.4) | $ 6.0 | $ 4.5 | ||
| Non-U.S. | 51.0 | 83.8 | 61.7 | ||
| Deferred: | |||||
| Federal | (0.4) | (8.4) | (46.3) | ||
| State and local | (1.8) | (2.7) | (7.0) | ||
| Non-U.S. | (10.9) | (28.8) | (32.6) | ||
| Income Tax Expense (Benefit), Total | $ 52.5 | $ 30.9 | $ 36.5 | $ 49.9 | (19.7) |
| Tax Cuts and Jobs Act, Change in Tax Rate, Deferred Tax Asset (Liability), Income Tax Expense (Benefit) | $ (3.0) | ||||