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Transactions with Affiliates (Details) - Antero Resources - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Allocation of costs |  |  |  |
Direct operating expenses | $ 5 | $ 5 | $ 16 | $ 15
General and administrative expense | $ 8 | $ 9 | $ 25 | $ 24

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