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Reportable Segments Investments (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Investments | $ 7,874 | $ 7,653
Operating Segments | Natural Gas Pipelines |  |
Segment Reporting Information [Line Items] |  |
Investments | 7,273 | 6,993
Operating Segments | Products Pipelines |  |
Segment Reporting Information [Line Items] |  |
Investments | 390 | 445
Operating Segments | Terminals |  |
Segment Reporting Information [Line Items] |  |
Investments | 130 | 128
Operating Segments | CO2 |  |
Segment Reporting Information [Line Items] |  |
Investments | $ 81 | $ 87

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- Definition The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(12)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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