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Related Party Transactions - Narrative (Details) - EPCO and its privately held affiliates - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Related Party Transaction [Line Items] |  |  |  |
Total cash distributions |  |  | $ 1,100 | $ 1,100
Operating lease, expense | $ 6 | $ 7 | $ 18 | $ 17
Common Units |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Enterprise common units pledged as security (in units) | 59,976,464 |  | 59,976,464 |

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