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RISK-MANAGEMENT AND HEDGING ACTIVITIES USING DERIVATIVES - Schedule of Fair Value of Derivative Instruments (Details) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Assets $ 90 $ 75
(Liabilities) (73) (86)
Cash posted - offsetting derivative net liability positions under master-netting arrangements   10
Derivatives designated as hedging instruments    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Assets 73 39
(Liabilities) (51) (47)
Derivatives not designated as hedging instruments    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Assets 17 36
(Liabilities) (22) (39)
Other current assets | Commodity contracts | Derivatives designated as hedging instruments    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Assets 73 39
Other current assets | Commodity contracts | Derivatives not designated as hedging instruments    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Assets 17 36
Other current liabilities | Commodity contracts | Derivatives designated as hedging instruments    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
(Liabilities) (51) (47)
Other current liabilities | Commodity contracts | Derivatives not designated as hedging instruments    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
(Liabilities) (22) (33)
Other deferred credits | Commodity contracts | Derivatives not designated as hedging instruments    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Assets 0 0
(Liabilities) $ 0 $ (6)