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Reportable Segments Capital expenditures (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Segment Reporting Information [Line Items] |  |  |
Capital Expenditures | $ 2,317 | $ 1,621 | $ 1,281
Operating Segments | Natural Gas Pipelines |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital Expenditures | 1,299 | 666 | 570
Operating Segments | Products Pipelines |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital Expenditures | 221 | 0 | 122
Operating Segments | Terminals |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital Expenditures | 406 | 552 | 332
Operating Segments | CO2 |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital Expenditures | 355 | 371 | 230
Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital Expenditures | $ 36 | $ 32 | $ 27

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