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 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Derivative Instruments, Gain (Loss) [Line Items]        
Realized Gain (Loss) on Derivatives $ (68) $ 33 $ (78) $ (35)
Unrealized Gain (Loss) on Derivatives 190 56 137 97
Realized and Unrealized Gain (Loss) on Risk Management $ 122 $ 89 $ 59 $ 62
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 Gain (Loss) from Price Risk Management Activity Gain (Loss) from Price Risk Management Activity
Commodity Derivatives [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Realized Gain (Loss) on Derivatives $ (68) $ 33 $ (78) $ 63
Unrealized Gain (Loss) on Derivatives 190 54 137 8
Realized and Unrealized Gain (Loss) on Risk Management $ 122 $ 87 $ 59 $ 71
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 Gain (Loss) from Price Risk Management Activity Gain (Loss) from Price Risk Management Activity
Foreign Currency Derivatives [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Realized Gain (Loss) on Derivatives $ 0 $ 0 $ 0 $ (98)
Unrealized Gain (Loss) on Derivatives 0 2 0 89
Realized and Unrealized Gain (Loss) on Risk Management $ 0 $ 2 $ 0 $ (9)
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 Gain (Loss) from Price Risk Management Activity Gain (Loss) from Price Risk Management Activity