COMMITMENTS AND CONTINGENCIES - Additional Information (Detail) - USD ($) $ in Millions	Apr. 06, 2020	Dec. 31, 2020	Dec. 31, 2019
Loss Contingencies [Line Items]
Decrease in environmental liabilities	$ (27.5)
Total asset retirement obligation liabilities		$ 19.7	$ 19.4
Surety bonds
Loss Contingencies [Line Items]
Guarantee liability		37.9	72.3
Bank guarantees
Loss Contingencies [Line Items]
Guarantee liability		21.2	19.3
Stand-by letters of credit | $1.2 billion senior credit facility, due in 2022
Loss Contingencies [Line Items]
Letters of credit outstanding		79.5	33.0
Stand-by letters of credit | Other credit facility
Loss Contingencies [Line Items]
Letters of credit outstanding		$ 0.0	$ 52.3