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Divestitures (Details) - USD ($) $ in Millions |  | 9 Months Ended
--- | --- | ---
Aug. 01, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Business Combination [Line Items] |  |  |
Proceeds from dispositions of equity-method investments (Note 3) |  | $ 0 | $ 161
Equity Method Investment, Realized Gain (Loss) on Disposal |  | $ 0 | $ 149
Northeast G & P [Member] | Aux Sable Liquid Products Inc And Aux Sable Liquid Products LP And Aux Sable Midstream LLC |  |  |
Business Combination [Line Items] |  |  |
Proceeds from dispositions of equity-method investments (Note 3) | $ 161 |  |
Equity Method Investment, Realized Gain (Loss) on Disposal | $ 149 |  |

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