CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) shares in Millions, $ 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
Beginning balance (in shares) at Dec. 31, 2021			79
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
Common stock repurchases (in shares)			8
Common stock repurchases	(192)		$ (192)
Common stock cash dividends	(455)					(455)
Preferred stock cash dividends	(1)					(1)
Other comprehensive (loss) income	4				4
Ending balance (in shares) at Mar. 31, 2022		893
Ending balance (in shares) at Mar. 31, 2022			87
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, 2021		893
Beginning balance (in shares) at Dec. 31, 2021			79
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	$ 3,033
Common stock repurchases (in shares)	(28)
Common stock repurchases	$ (740)
Ending balance (in shares) at Sep. 30, 2022		895
Ending balance (in shares) at Sep. 30, 2022			107
Balance at end of period at Sep. 30, 2022	12,659	$ 90	$ (2,566)	10,992	6	4,137
Beginning balance (in shares) at Mar. 31, 2022		893
Beginning balance (in shares) at Mar. 31, 2022			87
Balance at beginning of period at Mar. 31, 2022	11,718	$ 89	$ (2,018)	10,927	5	2,715
Increase (Decrease) in Stockholders' Equity
Net income	1,229					1,229
Exercise of stock options	3			3
Stock amortization and vesting	18			18
Conversion of Cimarex redeemable preferred stock (in shares)		1
Conversion of Cimarex redeemable preferred stock	28			28
Common stock repurchases (in shares)			12
Common stock repurchases	(321)		$ (321)
Common stock cash dividends	(484)					(484)
Ending balance (in shares) at Jun. 30, 2022		894
Ending balance (in shares) at Jun. 30, 2022			99
Balance at end of period at Jun. 30, 2022	12,191	$ 89	$ (2,339)	10,976	5	3,460
Increase (Decrease) in Stockholders' Equity
Net income	1,196					1,196
Exercise of stock options	2			2
Stock amortization and vesting (in shares)		1
Stock amortization and vesting	15	$ 1		14
Common stock repurchases (in shares)			8
Common stock repurchases	(227)		$ (227)
Common stock cash dividends	(519)					(519)
Other comprehensive (loss) income	1				1
Ending balance (in shares) at Sep. 30, 2022		895
Ending balance (in shares) at Sep. 30, 2022			107
Balance at end of period at Sep. 30, 2022	12,659	$ 90	$ (2,566)	10,992	6	4,137
Beginning balance (in shares) at Dec. 31, 2022		768
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
Common stock repurchases (in shares)			11
Common stock repurchases	(271)		$ (271)
Common stock retirements (in shares)		(11)	(11)
Common stock retirements	0	$ (1)	$ 271	(270)
Common stock cash dividends	(438)					(438)
Ending balance (in shares) at Mar. 31, 2023		757
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
Beginning balance (in shares) at Dec. 31, 2022		768
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	1,209
Ending balance (in shares) at Sep. 30, 2023		753
Ending balance (in shares) at Sep. 30, 2023			0
Balance at end of period at Sep. 30, 2023	12,789	$ 75	$ 0	7,601	12	5,101
Beginning balance (in shares) at Mar. 31, 2023		757
Beginning balance (in shares) at Mar. 31, 2023			0
Balance at beginning of period at Mar. 31, 2023	12,643	$ 76	$ 0	7,679	13	4,875
Increase (Decrease) in Stockholders' Equity
Net income	209					209
Stock amortization and vesting	17			17
Common stock repurchases (in shares)			2
Common stock repurchases	(57)		$ (57)
Common stock retirements (in shares)		(2)	(2)
Common stock retirements	0		$ 57	(57)
Common stock cash dividends	(153)					(153)
Ending balance (in shares) at Jun. 30, 2023		755
Ending balance (in shares) at Jun. 30, 2023			0
Balance at end of period at Jun. 30, 2023	12,659	$ 76	$ 0	7,639	13	4,931
Increase (Decrease) in Stockholders' Equity
Net income	323					323
Stock amortization and vesting	21			21
Common stock repurchases (in shares)			2
Common stock repurchases	(60)		$ (60)
Common stock retirements (in shares)		(2)	(2)
Common stock retirements	0	$ (1)	$ 60	(59)
Common stock cash dividends	(153)					(153)
Other comprehensive (loss) income	(1)				(1)
Ending balance (in shares) at Sep. 30, 2023		753
Ending balance (in shares) at Sep. 30, 2023			0
Balance at end of period at Sep. 30, 2023	$ 12,789	$ 75	$ 0	$ 7,601	$ 12	$ 5,101