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Reportable Segments Other, net-income(expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Other, net	$ 56	$ 75	$ 107
Operating Segments | Natural Gas Pipelines
Segment Reporting Information [Line Items]
Other, net	11	53	39
Operating Segments | Products Pipelines
Segment Reporting Information [Line Items]
Other, net	1	6	2
Operating Segments | Terminals
Segment Reporting Information [Line Items]
Other, net	13	(5)	3
Operating Segments | Kinder Morgan Canada
Segment Reporting Information [Line Items]
Other, net	0	0	26
Other
Segment Reporting Information [Line Items]
Other, net	$ 31	$ 21	$ 37

X

- Definition

Amount of income (expense) related to nonoperating activities, classified as other.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.9)
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

+ Details

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+ References

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