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]            
Deferred NPNS assets $ 669   $ 669     $ 0
Current portion of deferred NPNS liabilities (103)   (103)     0
Deferred NPNS liabilities (1,081)   (1,081)     $ 0
Total deferred NPNS assets and liabilities         $ (520)  
Deferred NPNS Assets and Liabilities Amortization [Abstract]            
2026 (1) [1]         57  
2027         103  
2028         103  
2029         88  
2030         58  
Thereafter         111  
Total estimated amortization         520  
Derivative gain (loss), net 0 $ 0 1 $ 0    
Gains (Losses) From Amortization Of NPNS Assets And Liabilities     5      
Normal Purchase Normal Sale Designated            
Deferred NPNS Assets and Liabilities Amortization [Abstract]            
Derivative gain (loss), net $ 551 $ 39 $ (126) $ 188    
Deferred NPNS Assets [Member]            
Nature of Operations and Basis of Presentation [Line Items]            
Deferred NPNS assets         669  
Current portion of deferred NPNS liabilities [Member]            
Nature of Operations and Basis of Presentation [Line Items]            
Current portion of deferred NPNS liabilities         (108)  
Deferred NPNS liabilities [Member]            
Nature of Operations and Basis of Presentation [Line Items]            
Deferred NPNS liabilities         $ (1,081)  
[1] For the six months ended June 30, 2026, we recorded a gain from amortization of $5 million.