SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property, plant and equipment (Details)
$ in Millions |
12 Months Ended |
|
|
Dec. 31, 2019
USD ($)
segment
|
Dec. 31, 2018
USD ($)
|
| Property, plant and equipment |
|
|
| Property, plant and equipment, at cost |
$ 592.5
|
$ 556.4
|
| Less: Accumulated depreciation |
(164.3)
|
(114.7)
|
| Property, Plant and Equipment, Net, Total |
$ 428.2
|
441.7
|
| Number of operating segment | segment |
1
|
|
| Machinery and equipment |
|
|
| Property, plant and equipment |
|
|
| Property, plant and equipment, at cost |
$ 280.7
|
254.8
|
| Machinery and equipment | Minimum |
|
|
| Property, plant and equipment |
|
|
| Property, plant and equipment, useful life |
10 years
|
|
| Machinery and equipment | Maximum |
|
|
| Property, plant and equipment |
|
|
| Property, plant and equipment, useful life |
12 years
|
|
| Building |
|
|
| Property, plant and equipment |
|
|
| Property, plant and equipment, at cost |
$ 243.2
|
234.0
|
| Building | Minimum |
|
|
| Property, plant and equipment |
|
|
| Property, plant and equipment, useful life |
30 years
|
|
| Building | Maximum |
|
|
| Property, plant and equipment |
|
|
| Property, plant and equipment, useful life |
40 years
|
|
| Land |
|
|
| Property, plant and equipment |
|
|
| Property, plant and equipment, at cost |
$ 46.7
|
51.7
|
| Construction in progress |
|
|
| Property, plant and equipment |
|
|
| Property, plant and equipment, at cost |
$ 21.9
|
$ 15.9
|