SUBSEQUENT EVENTS (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended			9 Months Ended
	Oct. 31, 2021	Dec. 31, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Subsequent Event [Line Items]
Gain (loss) on extinguishment of debt			$ 60.3	$ 0.0	$ 60.3	$ (22.2)
Settlement of precious metal catalyst obligations					$ 18.5	$ 8.8
Subsequent Event [Member]
Subsequent Event [Line Items]
Extinguishment of Debt, Amount	$ 76.3
Repayments of Long-term Debt	$ 55.9
Gain (loss) on extinguishment of debt		$ 20.0
Settlement of precious metal catalyst obligations		$ 10.9