FINANCIAL INSTRUMENTS (Details) - USD ($) $ in Millions |
Sep. 30, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
|---|---|---|---|
| FINANCIAL INSTRUMENTS | |||
| Carrying value | $ 2,256.8 | $ 3,467.3 | $ 3,427.8 |
| Term Loan due 2023 | |||
| FINANCIAL INSTRUMENTS | |||
| Fair Value | 1,985.7 | 1,796.2 | |
| Carrying value | 1,990.7 | 1,973.8 | |
| 9.250% Senior notes due 2024 | |||
| FINANCIAL INSTRUMENTS | |||
| Fair Value | 780.0 | 686.8 | |
| Carrying value | 726.4 | 722.9 | |
| 12.00%/13.00% PIK notes due 2022 | |||
| FINANCIAL INSTRUMENTS | |||
| Fair Value | 507.3 | 462.0 | |
| Carrying value | 490.1 | 485.0 | |
| 10.00% notes due 2024 | |||
| FINANCIAL INSTRUMENTS | |||
| Fair Value | 122.0 | ||
| Carrying value | 114.8 | ||
| ABL Revolving Credit Facility | |||
| FINANCIAL INSTRUMENTS | |||
| Fair Value | 145.2 | 245.1 | |
| Carrying value | $ 145.2 | $ 245.1 |