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Risk Management Activities - Schedule of Derivative Instruments in Statement of Financial Position, Fair Value (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Crude oil, NGLs and natural gas financial derivative contracts - Current Portion | $ 17 | $ 116
Price Risk Derivative |  |
Derivatives, Fair Value [Line Items] |  |
Crude oil, NGLs and natural gas financial derivative contracts - Current Portion | 19 | 0
Crude oil, NGLs and natural gas financial derivative contracts - Current Portion | 17 | 116
Crude oil, NGLs and natural gas financial derivative contracts - Noncurrent Portion | 21 | 0
Derivative asset, fair value, gross asset | 19 |
Derivative liability, fair value, gross liability | 20 | 117
Derivative liability asset offset | 3 | 1
Other Contract |  |
Derivatives, Fair Value [Line Items] |  |
Brent Linked Gas Sales Contract - Noncurrent Portion | $ 65 | $ 110

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