Reportable Segments Segment earnings before depreciation, depletion, amortization and amortization of excess cost of equity investments (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
DD&A	$ (2,411)	$ (2,297)	$ (2,261)
Amortization of excess cost of equity investments	(83)	(95)	(61)
General and administrative and corporate charges	(590)	(601)	(688)
Interest, net	(1,801)	(1,917)	(1,832)
Income tax expense	(926)	(587)	(1,938)
Net Income	2,239	1,919	223
Total Segment EBDA(f)
Segment Reporting Information [Line Items]
Segment EBDA(e)	8,071	7,403	6,975
Operating Segments \| Natural Gas Pipelines
Segment Reporting Information [Line Items]
Segment EBDA(e)	4,661	3,540	3,478
DD&A	(1,005)	(955)	(909)
Operating Segments \| Products Pipelines
Segment Reporting Information [Line Items]
Segment EBDA(e)	1,225	1,209	1,237
DD&A	(338)	(326)	(310)
Operating Segments \| Terminals
Segment Reporting Information [Line Items]
Segment EBDA(e)	1,506	1,175	1,227
DD&A	(494)	(489)	(480)
Operating Segments \| CO2
Segment Reporting Information [Line Items]
Segment EBDA(e)	681	759	847
DD&A	(548)	(473)	(493)
Operating Segments \| Kinder Morgan Canada
Segment Reporting Information [Line Items]
Segment EBDA(e)	(2)	720	186
DD&A	0	(29)	(46)
Corporate, Non-Segment
Segment Reporting Information [Line Items]
DD&A	(26)	(25)	(23)
General and administrative and corporate charges	$ (611)	(588)	(660)
Previously Reported [Member] \| Operating Segments \| Natural Gas Pipelines
Segment Reporting Information [Line Items]
Segment EBDA(e)		3,580	3,487
Previously Reported [Member] \| Operating Segments \| Products Pipelines
Segment Reporting Information [Line Items]
Segment EBDA(e)		1,173	1,231
Previously Reported [Member] \| Operating Segments \| Terminals
Segment Reporting Information [Line Items]
Segment EBDA(e)		$ 1,171	$ 1,224

Segment Earnings Before Depreciation Depletion And Amortization

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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.

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The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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