Revenue Recognition Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ 12,080	$ 13,318
Other revenues	1,129	826
Revenues	13,209	14,144	$ 13,705
Operating Lease, Lease Income	951	868
Firm services
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	4,877	4,746
Fee-based services
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	2,416	2,466
Total services
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	7,293	7,212
Natural gas sales
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	2,595	3,318
Product sales
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	2,192	2,788
Total commodity sales
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	4,787	6,106
Revenues	4,811	5,987	5,654
Natural Gas Pipelines
Disaggregation of Revenue [Line Items]
Revenues	8,128	8,807	8,502
Products Pipelines
Disaggregation of Revenue [Line Items]
Revenues	1,831	1,887	1,744
Terminals
Disaggregation of Revenue [Line Items]
Revenues	2,031	2,025	1,972
CO2
Disaggregation of Revenue [Line Items]
Revenues	1,219	1,255	1,196
Kinder Morgan Canada
Disaggregation of Revenue [Line Items]
Revenues	0	170	$ 256
Operating Segments | Natural Gas Pipelines
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	7,737	8,596
Other revenues	433	259
Revenues	8,170	8,855
Operating Segments | Natural Gas Pipelines | Firm services
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	3,549	3,387
Operating Segments | Natural Gas Pipelines | Fee-based services
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	780	692
Operating Segments | Natural Gas Pipelines | Total services
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	4,329	4,079
Operating Segments | Natural Gas Pipelines | Natural gas sales
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	2,603	3,327
Operating Segments | Natural Gas Pipelines | Product sales
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	805	1,190
Operating Segments | Natural Gas Pipelines | Total commodity sales
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	3,408	4,517
Operating Segments | Products Pipelines
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,624	1,725
Other revenues	207	162
Revenues	1,831	1,887
Operating Segments | Products Pipelines | Firm services
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	319	376
Operating Segments | Products Pipelines | Fee-based services
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,016	956
Operating Segments | Products Pipelines | Total services
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,335	1,332
Operating Segments | Products Pipelines | Natural gas sales
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	0	0
Operating Segments | Products Pipelines | Product sales
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	289	393
Operating Segments | Products Pipelines | Total commodity sales
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	289	393
Operating Segments | Terminals
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,592	1,587
Other revenues	442	440
Revenues	2,034	2,027
Operating Segments | Terminals | Firm services
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,012	983
Operating Segments | Terminals | Fee-based services
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	560	584
Operating Segments | Terminals | Total services
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,572	1,567
Operating Segments | Terminals | Natural gas sales
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	0	0
Operating Segments | Terminals | Product sales
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	20	20
Operating Segments | Terminals | Total commodity sales
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	20	20
Operating Segments | CO2
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,173	1,293
Other revenues	46	(38)
Revenues	1,219	1,255
Operating Segments | CO2 | Firm services
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1	2
Operating Segments | CO2 | Fee-based services
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	60	67
Operating Segments | CO2 | Total services
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	61	69
Operating Segments | CO2 | Natural gas sales
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1	2
Operating Segments | CO2 | Product sales
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,111	1,222
Operating Segments | CO2 | Total commodity sales
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,112	1,224
Operating Segments | Kinder Morgan Canada
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers		167
Other revenues		3
Revenues		170
Operating Segments | Kinder Morgan Canada | Firm services
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers		0
Operating Segments | Kinder Morgan Canada | Fee-based services
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers		167
Operating Segments | Kinder Morgan Canada | Total services
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers		167
Operating Segments | Kinder Morgan Canada | Natural gas sales
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers		0
Operating Segments | Kinder Morgan Canada | Product sales
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers		0
Operating Segments | Kinder Morgan Canada | Total commodity sales
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers		0
Corporate and Eliminations
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	(46)	(50)
Other revenues	1	0
Revenues	(45)	(50)
Corporate and Eliminations | Firm services
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	(4)	(2)
Corporate and Eliminations | Fee-based services
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	0	0
Corporate and Eliminations | Total services
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	(4)	(2)
Corporate and Eliminations | Natural gas sales
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	(9)	(11)
Corporate and Eliminations | Product sales
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	(33)	(37)
Corporate and Eliminations | Total commodity sales
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	(42)	(48)
Sales
Disaggregation of Revenue [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ 49	$ (133)