Quarterly report pursuant to Section 13 or 15(d)

COMMITMENTS AND CONTINGENCIES - Contingencies (Details)

v3.21.2
COMMITMENTS AND CONTINGENCIES - Contingencies (Details) - USD ($)
$ in Millions
Jun. 30, 2021
Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]    
Environmental obligations $ 159 $ 135
Less: current portion 15 18
Long-term environmental obligations $ 144 $ 117