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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Statement of Comprehensive Income [Abstract]        
Net income $ 602 $ 610 $ 1,375 $ 1,313
Other comprehensive income (loss), net of tax        
Net unrealized (loss) gain from derivative instruments (net of taxes of $3, $(14), $24 and $(46), respectively) (12) 49 (81) 155
Reclassification into earnings of net derivative instruments loss (gain) to net income (net of taxes of $(8), $—, $(7) and $15, respectively) 25 (2) 22 (51)
Benefit plan adjustments (net of taxes of $—, $(1), $(4) and $(2), respectively) 1 4 14 8
Total other comprehensive income (loss) 14 51 (45) 112
Comprehensive income 616 661 1,330 1,425
Comprehensive income attributable to noncontrolling interests (27) (24) (54) (48)
Comprehensive income attributable to KMI $ 589 $ 637 $ 1,276 $ 1,377