SEGMENT INFORMATION - Intersegment sales (Details) - Operating segment - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Segment Reporting Information [Line Items] | |||
| Total | $ 174.2 | $ 174.9 | $ 164.9 |
| Americas | |||
| Segment Reporting Information [Line Items] | |||
| Total | 22.3 | 29.9 | 25.3 |
| Asia Pacific | |||
| Segment Reporting Information [Line Items] | |||
| Total | 100.0 | 102.7 | 90.5 |
| Europe, Middle East, & Africa | |||
| Segment Reporting Information [Line Items] | |||
| Total | $ 51.9 | $ 42.3 | $ 49.1 |