v3.26.1
Financial Instruments and Derivatives (Narrative) (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Debt instrument [Line Items]      
Initial margin collateral receivable $ 1,400   $ 500
Proceeds from hedge, financing activities 3,400    
Not Designated as Hedging Instrument      
Debt instrument [Line Items]      
Unrealized gain (loss) on derivative instruments (2,300) $ 534  
Short-term line of credit      
Debt instrument [Line Items]      
Line of credit 7,400    
Long-term line of credit      
Debt instrument [Line Items]      
Line of credit $ 300