Consolidated Statements of Changes in Equity - USD ($) $ in Millions	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests
Beginning balance (in shares) at Dec. 31, 2020		193,771,000
Beginning balance at Dec. 31, 2020	$ 12,589	$ 5,406	$ 7,156	$ (137)	$ 164
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	903		907		(4)
Dividends declared on common stock	(752)		(752)
Repurchase of common stock (in shares)		(529,000)
Repurchase of common stock	(66)	$ (66)
Other comprehensive income (loss), net of tax	15			15
Stock-based compensation, net distributions to/ contributions from noncontrolling interests, and other (in shares)		506,000
Stock-based compensation, net distributions to noncontrolling interests, and other	34	$ 39	(4)		(1)
Separation of DT Midstream	(4,010)		(3,869)	10	(151)
Ending balance (in shares) at Dec. 31, 2021		193,748,000
Ending balance at Dec. 31, 2021	8,713	$ 5,379	3,438	(112)	8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	1,083		1,083
Dividends declared on common stock	(710)		(710)
Issuance of common stock (in shares)		11,887,000
Issuance of common stock		$ 1,300
Repurchase of common stock (in shares)		(465,000)
Repurchase of common stock	(55)	$ (55)
Other comprehensive income (loss), net of tax	50			50
Stock-based compensation, net distributions to/ contributions from noncontrolling interests, and other (in shares)		462,000
Stock-based compensation, net distributions to noncontrolling interests, and other	$ 20	$ 27	(3)		(4)
Ending balance (in shares) at Dec. 31, 2022	205,632,393	205,632,000
Ending balance at Dec. 31, 2022	$ 10,401	$ 6,651	3,808	(62)	4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	1,397		1,397
Dividends declared on common stock	(800)		(800)
Issuance of common stock (in shares)		318,000
Issuance of common stock	35	$ 35
Other comprehensive income (loss), net of tax	(5)			(5)
Stock-based compensation, net distributions to/ contributions from noncontrolling interests, and other (in shares)		407,000
Stock-based compensation, net distributions to noncontrolling interests, and other	$ 27	$ 27	(1)		1
Ending balance (in shares) at Dec. 31, 2023	206,357,070	206,357,000
Ending balance at Dec. 31, 2023	$ 11,055	$ 6,713	$ 4,404	$ (67)	$ 5