CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Millions	Total	Common Stock	Treasury Shares	Paid-In Capital	Accumulated Other Comprehensive Income	Retained Earnings
Beginning balance (in shares) at Dec. 31, 2021		893,000
Beginning balance (in shares) at Dec. 31, 2021			79,000
Balance at beginning of period at Dec. 31, 2021	$ 11,738	$ 89	$ (1,826)	$ 10,911	$ 1	$ 2,563
Increase (Decrease) in Stockholders' Equity
Net income	608					608
Exercise of stock options	6			6
Stock amortization and vesting	$ 10			10
Treasury stock repurchases (in shares)	8,000		8,000
Common stock repurchases	$ (192)		$ (192)
Common stock cash dividends	(455)					(455)
Preferred stock cash dividends	(1)					(1)
Other comprehensive loss	4				4
Ending balance (in shares) at Mar. 31, 2022		893,000
Ending balance (in shares) at Mar. 31, 2022			87,000
Balance at end of period at Mar. 31, 2022	11,718	$ 89	$ (2,018)	10,927	5	2,715
Beginning balance (in shares) at Dec. 31, 2022		768,000
Beginning balance (in shares) at Dec. 31, 2022			0
Balance at beginning of period at Dec. 31, 2022	12,659	$ 77	$ 0	7,933	13	4,636
Increase (Decrease) in Stockholders' Equity
Net income	677					677
Stock amortization and vesting	13			13
Conversion of Cimarex redeemable preferred stock	$ 3			3
Treasury stock repurchases (in shares)	11,000
Common stock repurchases	$ (271)		(271)
Common stock retirements (in shares)	(11,000)	(11,000)
Common stock retirements	$ 0	$ (1)	$ 271	(270)
Common stock cash dividends	(438)					(438)
Ending balance (in shares) at Mar. 31, 2023		757,000
Ending balance (in shares) at Mar. 31, 2023			0
Balance at end of period at Mar. 31, 2023	$ 12,643	$ 76	$ 0	$ 7,679	$ 13	$ 4,875