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Financial Instruments and Risk Management (Earnings Impact of Realized and Unrealized Gains (Losses) On Risk Management Positions) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items]      
Realized Gain (Loss) on Derivatives $ 68 $ 268 $ (50)
Unrealized Gain (Loss) on Derivatives 95 (236) 215
Realized and Unrealized Gain (Loss) on Risk Management $ 163 $ 32 $ 165
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
Revenue [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Realized Gain (Loss) on Derivatives $ 166 $ 271 $ (43)
Unrealized Gain (Loss) on Derivatives 172 135 151
Realized and Unrealized Gain (Loss) on Risk Management $ 6 $ (136) $ 194
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
Foreign Currency Gain (Loss) [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Realized Gain (Loss) on Derivatives $ (98) $ (3) $ (8)
Unrealized Gain (Loss) on Derivatives 89 (100) 21
Realized and Unrealized Gain (Loss) on Risk Management $ (9) $ (103) $ 13
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
Interest Rate [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Realized Gain (Loss) on Derivatives $ 0 $ 0 $ 1
Realized and Unrealized Gain (Loss) on Risk Management $ 0 $ 0 $ 1
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