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Reportable Segments Revenues (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Segment Reporting Information [Line Items] |  |  |
Revenues | $ 15,334 | $ 19,200 | $ 16,610
Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | (26) | (30) | (68)
Intersegment Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | (26) | (30) | (68)
Natural Gas Pipelines |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 9,152 | 12,659 | 11,644
Natural Gas Pipelines | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 9,168 | 12,686 | 11,709
Natural Gas Pipelines | Intersegment Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | (16) | (27) | (65)
Products Pipelines |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 3,066 | 3,418 | 2,245
Products Pipelines | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 3,066 | 3,418 | 2,245
Terminals |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 1,911 | 1,789 | 1,712
Terminals | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 1,917 | 1,792 | 1,715
Terminals | Intersegment Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | (6) | (3) | (3)
CO2 |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 1,205 | 1,334 | 1,009
CO2 | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 1,209 | 1,334 | 1,009
CO2 | Intersegment Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | $ (4) | $ 0 | $ 0
Revenue Benchmark | Customer Concentration Risk |  |  |
Segment Reporting Information [Line Items] |  |  |
Concentration Risk, Percentage Meet Certain Threshold | 10.00% | 10.00% | 10.00%

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