PENSION PLANS - Changes in value for Level 3 assets (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
|
| Changes in value for Level 3 assets | ||
| Fair value of plan assets, beginning | $ 9.0 | $ 8.8 |
| Gains (losses) on assets held | 0.7 | (0.3) |
| Purchases, sales and settlements, net | 0.5 | 0.5 |
| Fair value of plan assets, ending | $ 10.2 | $ 9.0 |