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Derivative Financial Instruments Gains and Losses (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2026 | Mar. 31, 2025
Derivative Instruments, (Gain) Loss [Line Items] |  |
Net derivative settlement (gain) loss | $ 30 | $ (8)
Net derivative (gain) loss | 697 | 17
Oil Contracts |  |
Derivative Instruments, (Gain) Loss [Line Items] |  |
Net derivative settlement (gain) loss | 71 | (3)
Net derivative (gain) loss | 799 | 3
Gas Contracts |  |
Derivative Instruments, (Gain) Loss [Line Items] |  |
Net derivative settlement (gain) loss | (40) | (7)
Net derivative (gain) loss | (212) | 12
NGL Contracts |  |
Derivative Instruments, (Gain) Loss [Line Items] |  |
Net derivative settlement (gain) loss | (1) | 2
Net derivative (gain) loss | $ 110 | $ 2

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