CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common stock	Common stock	Additional paid-in capital	Accumulated deficit	Accumulated other comprehensive loss	Stockholders’ equity attributable to KMI	Non-controlling interests
Balance at Dec. 31, 2016	$ 34,802	$ 0	$ 22	$ 41,739	$ (6,669)	$ (661)	$ 34,431	$ 371
Balance (shares) at Dec. 31, 2016		2.0	2,230.0
Repurchases of shares	(250)			(250)			(250)
Repurchases of shares (shares)			(14.0)
Restricted shares	65			65			65
Restricted shares (shares)			1.0
Net income	223				183		183	40
KML IPO	1,049			314		51	365	684
KML preferred share issuance	419						0	419
Reorganization of foreign subsidiaries	38			38			38
Distributions	(48)						0	(48)
Contributions	18						0	18
Preferred stock dividends	(156)				(156)		(156)
Common stock dividends	(1,120)				(1,120)		(1,120)
Sale and deconsolidation of interest in subsidiaries	(30)						0	(30)
Other	(1)			3	8		11	(12)
Other comprehensive (loss) income	115					69	69	46
Balance at Dec. 31, 2017	35,124	$ 0	$ 22	41,909	(7,754)	(541)	33,636	1,488
Balance (shares) at Dec. 31, 2017		2.0	2,217.0
Impact of adoption of ASU at Dec. 31, 2017	66				175	(109)	66
Adjusted balance at Dec. 31, 2017	35,190	$ 0	$ 22	41,909	(7,579)	(650)	33,702	1,488
Repurchases of shares	(273)			(273)			(273)
Repurchases of shares (shares)			(15.0)
Mandatory conversion of preferred shares	0		$ 1	(1)			0
Mandatory conversion of preferred shares (shares)			58.0
Mandatory conversion of preferred shares (shares)		(2.0)
Restricted shares	65			65			65
Restricted shares (shares)			2.0
Net income	1,919				1,609		1,609	310
Distributions	(997)						0	(997)
Contributions	33						0	33
Preferred stock dividends	(128)				(128)		(128)
Common stock dividends	(1,618)				(1,618)		(1,618)
Other	2			1			1	1
Other comprehensive (loss) income	338					320	320	18
Balance at Dec. 31, 2018	34,531	$ 0	$ 23	41,701	(7,716)	(330)	33,678	853
Balance (shares) at Dec. 31, 2018		0.0	2,262.0
Impact of adoption of ASU at Dec. 31, 2018	(4)				(4)		(4)
Adjusted balance at Dec. 31, 2018	34,527	$ 0	$ 23	41,701	(7,720)	(330)	33,674	853
Repurchases of shares	(2)			(2)			(2)
Repurchases of shares (shares)			(0.1)
Restricted shares	46			46			46
Restricted shares (shares)			3.0
Net income	2,239				2,190		2,190	49
Distributions	(55)						0	(55)
Contributions	3						0	3
Common stock dividends	(2,163)				(2,163)		(2,163)
Sale and deconsolidation of interest in subsidiaries	(435)					68	68	(503)
Other	1						0	1
Other comprehensive (loss) income	14
Other comprehensive loss	(75)					(71)	(71)	(4)
Balance at Dec. 31, 2019	$ 34,086	$ 0	$ 23	$ 41,745	$ (7,693)	$ (333)	$ 33,742	$ 344
Balance (shares) at Dec. 31, 2019		0.0	2,265.0