Reportable Segments Revenues (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues
Revenues	$ 13,209	$ 14,144	$ 13,705
Corporate, Non-Segment
Revenues
Revenues	(45)	(50)
Intersegment Eliminations [Member]
Revenues
Revenues	(45)	(50)	11
Natural Gas Pipelines
Revenues
Revenues	8,128	8,807	8,502
Natural Gas Pipelines | Intersegment Eliminations [Member]
Revenues
Revenues	(42)	(48)	(22)
Products Pipelines
Revenues
Revenues	1,831	1,887	1,744
Terminals
Revenues
Revenues	2,031	2,025	1,972
Terminals | Intersegment Eliminations [Member]
Revenues
Revenues	(3)	(2)	(2)
CO2
Revenues
Revenues	1,219	1,255	1,196
Kinder Morgan Canada
Revenues
Revenues	$ 0	$ 170	$ 256
Revenues from External Customers [Member]
Revenues
Concentration Risk, Percentage	10.00%	10.00%	10.00%
Affiliated Entity [Member]
Revenues
Revenues	$ 269	$ 265	$ 162
Affiliated Entity [Member] | Corporate, Non-Segment
Revenues
Revenues			35
Previously Reported [Member] | Intersegment Eliminations [Member]
Revenues
Revenues		(28)	8
Previously Reported [Member] | Natural Gas Pipelines
Revenues
Revenues		9,015	8,618
Previously Reported [Member] | Products Pipelines
Revenues
Revenues		1,713	1,661
Previously Reported [Member] | Terminals
Revenues
Revenues		2,019	1,966
Single customer exceeding 10% of total [Member]
Revenues
Revenues	$ 0	$ 0	$ 0