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Reportable Segments Depreciation, depletion and amortization (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Segment Reporting Information [Line Items] |  |  |
DD&A | $ 2,250 | $ 2,186 | $ 2,135
Operating Segments | Natural Gas Pipelines |  |  |
Segment Reporting Information [Line Items] |  |  |
DD&A | 1,041 | 1,096 | 1,099
Operating Segments | Products Pipelines |  |  |
Segment Reporting Information [Line Items] |  |  |
DD&A | 367 | 336 | 335
Operating Segments | Terminals |  |  |
Segment Reporting Information [Line Items] |  |  |
DD&A | 493 | 458 | 440
Operating Segments | CO2 |  |  |
Segment Reporting Information [Line Items] |  |  |
DD&A | 325 | 272 | 236
Other |  |  |
Segment Reporting Information [Line Items] |  |  |
DD&A | $ 24 | $ 24 | $ 25

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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-22 + Details
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