v3.26.3
Hedging Activities and Fair Value Measurements - Schedule of Derivative Fair Value Amounts (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Commodity Derivative Instruments    
Derivatives, Fair Value [Line Items]    
Asset Derivatives $ 760 $ 460
Liability Derivatives 748 363
Derivatives designated as hedging instruments    
Derivatives, Fair Value [Line Items]    
Asset Derivatives 681 429
Liability Derivatives 667 325
Derivatives designated as hedging instruments | Commodity Derivative Instruments    
Derivatives, Fair Value [Line Items]    
Asset Derivatives 681 429
Liability Derivatives 667 325
Derivatives designated as hedging instruments | Commodity Derivative Instruments | Location, Statement of Financial Position, Balance [Axis]: us-gaap:AssetsCurrent    
Derivatives, Fair Value [Line Items]    
Asset Derivatives 645 403
Derivatives designated as hedging instruments | Commodity Derivative Instruments | Location, Statement of Financial Position, Balance [Axis]: us-gaap:LiabilitiesCurrent    
Derivatives, Fair Value [Line Items]    
Liability Derivatives 610 312
Derivatives designated as hedging instruments | Commodity Derivative Instruments | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherAssetsNoncurrent    
Derivatives, Fair Value [Line Items]    
Asset Derivatives 36 26
Derivatives designated as hedging instruments | Commodity Derivative Instruments | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherLiabilitiesNoncurrent    
Derivatives, Fair Value [Line Items]    
Liability Derivatives 57 13
Derivatives not designated as hedging instruments    
Derivatives, Fair Value [Line Items]    
Asset Derivatives 79 31
Liability Derivatives 81 38
Derivatives not designated as hedging instruments | Commodity Derivative Instruments    
Derivatives, Fair Value [Line Items]    
Asset Derivatives 79 31
Liability Derivatives 81 38
Derivatives not designated as hedging instruments | Commodity Derivative Instruments | Location, Statement of Financial Position, Balance [Axis]: us-gaap:AssetsCurrent    
Derivatives, Fair Value [Line Items]    
Asset Derivatives 76 31
Derivatives not designated as hedging instruments | Commodity Derivative Instruments | Location, Statement of Financial Position, Balance [Axis]: us-gaap:LiabilitiesCurrent    
Derivatives, Fair Value [Line Items]    
Liability Derivatives 73 35
Derivatives not designated as hedging instruments | Commodity Derivative Instruments | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherAssetsNoncurrent    
Derivatives, Fair Value [Line Items]    
Asset Derivatives 3 0
Derivatives not designated as hedging instruments | Commodity Derivative Instruments | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherLiabilitiesNoncurrent    
Derivatives, Fair Value [Line Items]    
Liability Derivatives $ 8 $ 3