Quarterly report pursuant to Section 13 or 15(d)

COMMITMENTS AND CONTINGENCIES - Contingencies (Details)

v3.21.1
COMMITMENTS AND CONTINGENCIES - Contingencies (Details) - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]    
Environmental obligations $ 134.0 $ 135.0
Less: current portion 20.0 18.0
Long-term environmental obligations $ 114.0 $ 117.0