v3.26.1
Financial Instruments and Risk Management (Earnings Impact of Realized and Unrealized Gains (Losses) On Risk Management Positions) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Derivative Instruments, Gain (Loss) [Line Items]    
Realized Gain (Loss) on Derivatives $ (10) $ (68)
Unrealized Gain (Loss) on Derivatives (53) 41
Realized and Unrealized Gain (Loss) on Risk Management $ (63) $ (27)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Gain (Loss) from Price Risk Management Activity Gain (Loss) from Price Risk Management Activity
Revenue [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Realized Gain (Loss) on Derivatives $ (10) $ 30
Unrealized Gain (Loss) on Derivatives (53) (46)
Realized and Unrealized Gain (Loss) on Risk Management $ (63) $ (16)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Gain (Loss) from Price Risk Management Activity Gain (Loss) from Price Risk Management Activity
Foreign Currency Gain (Loss) [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Realized Gain (Loss) on Derivatives $ 0 $ (98)
Unrealized Gain (Loss) on Derivatives 0 87
Realized and Unrealized Gain (Loss) on Risk Management $ 0 $ (11)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Gain (Loss) from Price Risk Management Activity Gain (Loss) from Price Risk Management Activity