PROPERTY, PLANT AND EQUIPMENT - Maturities of Lease Liabilities (Details) $ in Millions	Dec. 31, 2021 USD ($)
Operating Leases
2022	$ 28.7
2023	24.1
2024	19.4
2025	13.8
2026	12.3
Thereafter	40.6
Total undiscounted cash flows	138.9
Present value:
Short-term lease liability	12.7
Long-term lease liability	72.0
Total lease liability	84.7
Difference between undiscounted cash flows and discounted cash flows	54.2
Finance Leases
2022	0.3
2023	0.0
2024	0.0
2025	0.0
2026	0.0
Thereafter	0.0
Total undiscounted cash flows	0.3
Present value:
Short-term lease liability	0.2
Long-term lease liability	0.1
Total lease liability	0.3
Difference between undiscounted cash flows and discounted cash flows	$ 0.0