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Goodwill (Details) - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | May 31, 2024 | Dec. 31, 2022
Goodwill [Line Items] |  |  |  |
Gross goodwill | $ 26,870 |  |  | $ 26,751
Accumulated impairment losses | (6,786) |  |  | (6,786)
Goodwill | 20,084 | $ 20,121 |  | 19,965
Acquisition of STX Midstream |  | 156 |  |
Acquisition | (28) |  |  |
Divestitures | (9) |  |  |
Natural Gas Pipelines |  |  |  |
Goodwill [Line Items] |  |  |  |
Gross goodwill | 20,960 |  |  | 20,832
Accumulated impairment losses | (4,240) |  |  | (4,240)
Goodwill | 16,720 | 16,748 |  | 16,592
Acquisition of STX Midstream |  | 156 |  |
Acquisition | (28) |  |  |
Divestitures | 0 |  |  |
Products Pipelines |  |  |  |
Goodwill [Line Items] |  |  |  |
Gross goodwill | 2,796 |  |  | 2,796
Accumulated impairment losses | (1,267) |  |  | (1,267)
Goodwill | 1,529 | 1,529 |  | 1,529
Acquisition of STX Midstream |  | 0 |  |
Acquisition | 0 |  |  |
Divestitures | 0 |  |  |
Terminals |  |  |  |
Goodwill [Line Items] |  |  |  |
Gross goodwill | 1,481 |  |  | 1,481
Accumulated impairment losses | (679) |  |  | (679)
Goodwill | 802 | 802 |  | 802
Acquisition of STX Midstream |  | 0 |  |
Acquisition | 0 |  |  |
Divestitures | 0 |  |  |
CO2 |  |  |  |
Goodwill [Line Items] |  |  |  |
Gross goodwill | 1,633 |  |  | 1,642
Accumulated impairment losses | (600) |  |  | (600)
Goodwill | 1,033 | 1,042 |  | $ 1,042
Acquisition of STX Midstream |  | $ 0 |  |
Acquisition | 0 |  |  |
Divestitures | (9) |  |  |
ETV |  |  |  |
Goodwill [Line Items] |  |  |  |
Goodwill | $ 114 |  |  |
Minimum | Natural Gas Pipelines - Nonregulated |  |  |  |
Goodwill [Line Items] |  |  |  |
Fair value in excess of their respective carrying values (percentage) |  |  | 10.00% |
Minimum | Natural Gas Pipelines - Regulated |  |  |  |
Goodwill [Line Items] |  |  |  |
Fair value in excess of their respective carrying values (percentage) |  |  | 10.00% |
Minimum | Products Pipelines |  |  |  |
Goodwill [Line Items] |  |  |  |
Fair value in excess of their respective carrying values (percentage) |  |  | 10.00% |
Minimum | Products Pipelines, Terminals |  |  |  |
Goodwill [Line Items] |  |  |  |
Fair value in excess of their respective carrying values (percentage) |  |  | 10.00% |
Minimum | Terminals |  |  |  |
Goodwill [Line Items] |  |  |  |
Fair value in excess of their respective carrying values (percentage) |  |  | 10.00% |
Minimum | CO2, Excluding ETV |  |  |  |
Goodwill [Line Items] |  |  |  |
Fair value in excess of their respective carrying values (percentage) |  |  | 10.00% |
Minimum | ETV |  |  |  |
Goodwill [Line Items] |  |  |  |
Fair value in excess of their respective carrying values (percentage) |  |  | 10.00% |

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