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Capital Accounts, Noncontrolling Interests (Details) - USD ($) $ in Millions |  |  | 3 Months Ended
--- | --- | --- | ---
Mar. 27, 2024 | Feb. 16, 2024 | Mar. 31, 2024 | Mar. 31, 2023
Noncontrolling Interest |  |  |  |
Payments To Acquire Additional Interest In Subsidiaries As An Equity Transaction |  | $ 375 | $ 400 | $ 0
Noncontrolling Interest [Roll Forward] |  |  |  |
Net income attributable to noncontrolling interests |  |  | 26 | 31
Cash distributions paid to noncontrolling interests |  |  | (38) | (42)
Cash contributions from noncontrolling interests |  |  | $ 8 | $ 4
Whitehorn Pipeline Company LLC [Member] |  |  |  |
Noncontrolling Interest |  |  |  |
Percentage of Equity Interests Acquired |  | 20.00% |  |
Enterprise EF78 LLC [Member] |  |  |  |
Noncontrolling Interest |  |  |  |
Percentage of Equity Interests Acquired |  | 25.00% |  |
Panola Pipeline Company, LLC [Member] |  |  |  |
Noncontrolling Interest |  |  |  |
Percentage of Equity Interests Acquired | 15.00% |  |  |
Payments To Acquire Additional Interest In Subsidiaries As An Equity Transaction | $ 25 |  |  |
Parent Company's Ownership Percentage of Subsidiary | 70.00% |  |  |

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