Quarterly report pursuant to Section 13 or 15(d)

REVENUES - Narrative (Details)

v3.21.2
REVENUES - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2020
Customer Supply Agreement | Sales    
Disaggregation of Revenue [Line Items]    
Derivative revenue $ 31 $ 6