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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

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