CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (291)	$ 567
Other comprehensive income (loss), net of tax
Change in fair value of hedge derivatives (net of tax (expense) benefit of $(67) and $64, respectively)	222	(215)
Reclassification of change in fair value of derivatives to net income (net of tax expense of $11 and $4, respectively)	37	13
Foreign currency translation adjustments (net of tax expense of $- and $5, respectively)	1	10
Benefit plan adjustments (net of tax expense of $3 and $2, respectively)	11	8
Total other comprehensive income (loss)	271	(184)
Comprehensive (loss) income	(20)	383
Comprehensive income attributable to noncontrolling interests	(15)	(5)
Comprehensive (loss) income attributable to Kinder Morgan, Inc.	$ (35)	$ 378