Consolidated Statements of Changes in Equity - USD ($) $ in Millions	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Long-Term Income Tax Receivable	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interest
Beginning balance at Dec. 31, 2020	$ 46,977	$ 3,750	$ 0	$ 6,377	$ (658)	$ 35,093	$ (1,552)	$ 3,967
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	6,187					5,790		397
Other comprehensive income (loss)	217						212	5
Long-term income tax receivable adjustments	(94)				(86)	(8)
Preferred stock redemptions	(2,100)	(2,100)
Preferred stock dividend	(121)					(121)
Distributions	(478)							(478)
Contributions	9							9
Other equity transactions	(8)			(3)				(5)
Ending balance at Dec. 31, 2021	50,589	1,650	0	6,374	(744)	40,754	(1,340)	3,895
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,142					2,721		421
Other comprehensive income (loss)	(806)						(809)	3
Long-term income tax receivable adjustments	(47)				744	(791)
Preferred stock redemptions	(800)	(800)
Preferred stock dividend	(46)					(46)
Common stock purchases	(870)			(77)		(793)
Distributions	(522)							(522)
Contributions	5							5
Other equity transactions	(6)			1		(12)		5
Ending balance at Dec. 31, 2022	50,639	850	0	6,298	0	41,833	(2,149)	3,807
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,372					3,020		352
Other comprehensive income (loss)	246						246
Long-term income tax receivable adjustments	(54)					(54)
Preferred stock redemptions	(850)	(850)
Preferred stock dividend	(34)					(34)
Distributions	(394)							(394)
Contributions	4							4
Purchase of Cove Point noncontrolling interest	(3,180)			(725)			(1)	(2,454)
Other equity transactions	(9)							(9)
Ending balance at Dec. 31, 2023	$ 49,740	$ 0	$ 0	$ 5,573	$ 0	$ 44,765	$ (1,904)	$ 1,306