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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

X

- 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

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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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