v3.26.1
DERIVATIVES - Schedule of Gains and Losses on Derivative Instruments Included in Statement of Operations (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) on derivative instruments, net: $ 49 $ (197) $ 166 $ 29
Net cash received (paid) on settlements: 113 (37) 246 48
Gain on derivative instruments, net 49 (197) 166 29
Commodity contracts        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) on derivative instruments, net: 49 (203) 166 11
Net cash received (paid) on settlements: 113 23 273 109
Gain on derivative instruments, net 1   1  
Interest rate swaps        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) on derivative instruments, net: 0 7 0 18
Net cash received (paid) on settlements: 0 (60) (27) (60)
2026 WTI Contingent Liability        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) on derivative instruments, net: 0 (1) 0 1
Treasury locks        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) on derivative instruments, net: 0 0 0 (1)
Net cash received (paid) on settlements: $ 0 $ 0 $ 0 $ (1)