PENSION PLANS - Retirement plans expense (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| U.S. Plans | |||
| Company defined benefit plans: | |||
| Service cost | $ 0.1 | ||
| Interest cost | 0.4 | ||
| Expected return on plan assets | (0.6) | ||
| Net amortization | $ 0.2 | ||
| Net periodic pension expense | 0.2 | (0.1) | |
| Settlement | (0.1) | 0.9 | |
| Defined contribution plans | $ 13.5 | 12.7 | 14.8 |
| Total | 13.5 | 12.8 | 15.6 |
| Non-U.S. Plans | |||
| Company defined benefit plans: | |||
| Service cost | 2.4 | 2.6 | 2.8 |
| Interest cost | 2.4 | 2.3 | 2.6 |
| Expected return on plan assets | (0.9) | (0.7) | (0.9) |
| Net periodic pension expense | 3.9 | 4.2 | 4.5 |
| Curtailment | (1.3) | (1.6) | |
| Settlement | 0.1 | ||
| Defined contribution plans | 2.8 | 3.7 | 2.6 |
| Total | $ 6.7 | $ 6.6 | $ 5.6 |