Quarterly report [Sections 13 or 15(d)]

Nature of Operations and Basis of Presentation - Accounting for Derivative Instruments (Details)

v3.26.1
Nature of Operations and Basis of Presentation - Accounting for Derivative Instruments (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Jun. 12, 2026
Dec. 31, 2025
Nature of Operations and Basis of Presentation [Line Items]            
Normal Purchase Normal Sale, Percentage of Integrated Production Marketing Agreements Designated Of Total Fixed Minimum Volumes         73.00%  
Normal Purchase Normal Sale, Percentage of Integrated Production Marketing Agreements Not Designated Of Total Fixed Minimum Volumes         27.00%  
Deferred NPNS assets $ 2,195   $ 2,195     $ 0
Current portion of deferred NPNS liabilities (166)   (166)     0
Deferred NPNS liabilities (1,740)   (1,740)     $ 0
Total deferred NPNS assets and liabilities         $ 349  
Deferred NPNS Assets and Liabilities Amortization [Abstract]            
2026 (1) [1]         56  
2027         100  
2028         101  
2029         85  
2030         56  
Thereafter         (747)  
Total estimated amortization         (349)  
Net derivative gain (loss) 40 $ 101 (742) $ 218    
Gains (Losses) From Amortization Of NPNS Assets And Liabilities     5      
Normal Purchase Normal Sale Designated            
Deferred NPNS Assets and Liabilities Amortization [Abstract]            
Net derivative gain (loss) $ 1,800 $ 1,000 $ (2,200) $ 929    
Other Current Assets [Member]            
Nature of Operations and Basis of Presentation [Line Items]            
Current portion of deferred NPNS assets         68  
Deferred NPNS Assets [Member]            
Nature of Operations and Basis of Presentation [Line Items]            
Deferred NPNS assets         2,195  
Current portion of deferred NPNS liabilities [Member]            
Nature of Operations and Basis of Presentation [Line Items]            
Current portion of deferred NPNS liabilities         (174)  
Deferred NPNS liabilities [Member]            
Nature of Operations and Basis of Presentation [Line Items]            
Deferred NPNS liabilities         $ (1,740)  
[1] For the six months ended June 30, 2026, we recorded a gain from amortization of $5 million.