XML 89 R75.htm IDEA: XBRL DOCUMENT v3.22.0.1
FAIR VALUE MEASUREMENTS - Level 3 Rollforward (Details) - Level 3 - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
NUG contracts    
Reconciliation of changes in the fair value of NUG contracts    
Beginning Balance, Derivative Assets $ 0 $ 0
Beginning Balance, Derivative Liabilities 0 (16)
Beginning Balance, Net 0 (16)
Unrealized gain (loss), Derivative Assets 0 0
Unrealized gain (loss), Derivative Liabilities 0 (3)
Unrealized gain (loss), Net 0 (3)
Purchases, Derivative Assets 0 0
Purchases, Derivative Liabilities 0 0
Purchases, Net 0 0
Settlements, Derivative Assets 0 0
Settlements, Derivative Liabilities 0 19
Settlements, Net 0 19
Ending Balance, Derivative Assets 0 0
Ending Balance, Derivative Liabilities 0 0
Ending Balance, Net 0 0
FTRs    
Reconciliation of changes in the fair value of NUG contracts    
Beginning Balance, Derivative Assets 3 4
Beginning Balance, Derivative Liabilities 0 (1)
Beginning Balance, Net 3 3
Unrealized gain (loss), Derivative Assets 7 (3)
Unrealized gain (loss), Derivative Liabilities 0 0
Unrealized gain (loss), Net 7 (3)
Purchases, Derivative Assets 5 7
Purchases, Derivative Liabilities (2) (2)
Purchases, Net 3 5
Settlements, Derivative Assets (6) (5)
Settlements, Derivative Liabilities 1 3
Settlements, Net (5) (2)
Ending Balance, Derivative Assets 9 3
Ending Balance, Derivative Liabilities (1) 0
Ending Balance, Net $ 8 $ 3