CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 773	$ 703
Other comprehensive (loss) income, net of tax
Net unrealized (loss) gain from derivative instruments (net of taxes of $21 and $(32), respectively)	(69)	106
Reclassification into earnings of net derivative instruments (gain) to net income (net of taxes of $1 and $15, respectively)	(3)	(49)
Benefit plan adjustments (net of taxes of $(4) and $(1), respectively)	13	4
Total other comprehensive (loss) income	(59)	61
Comprehensive income	714	764
Comprehensive income attributable to noncontrolling interests	(27)	(24)
Comprehensive income attributable to KMI	$ 687	$ 740