Earnings per Common Share - Schedule of EPS (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income (Numerator)
Net income	$ 1,625	$ 4,065	$ 1,158
Less: dividends attributable to participating securities	(5)	(7)	(2)
Less: Cimarex redeemable preferred stock dividends	0	(1)	(1)
Net income available to common stockholders	$ 1,620	$ 4,057	$ 1,155
Shares (Denominator)
Weighted average shares - basic (in shares)	756	796	503
Dilution effect of stock awards at end of period (in shares)	4	3	1
Weighted average shares - diluted (in shares)	760	799	504
Earnings per share:
Basic (in dollars per share)	$ 2.14	$ 5.09	$ 2.30
Diluted (in dollars per share)	$ 2.13	$ 5.08	$ 2.29