CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Treasury Shares	Paid-In Capital	Accumulated Other Comprehensive Income	Retained Earnings
Beginning balance (in shares) at Dec. 31, 2020		478,000,000
Beginning balance (in shares) at Dec. 31, 2020			79,000,000
Balance at beginning of period at Dec. 31, 2020	$ 2,216	$ 48	$ (1,823)	$ 1,804	$ 2	$ 2,185
Increase (Decrease) in Stockholders' Equity
Net income	126					126
Stock amortization and vesting	4			4
Common stock cash dividends	(40)					(40)
Ending balance (in shares) at Mar. 31, 2021		478,000,000
Ending balance (in shares) at Mar. 31, 2021			79,000,000
Balance at end of period at Mar. 31, 2021	2,306	$ 48	$ (1,823)	1,808	2	2,271
Beginning balance (in shares) at Dec. 31, 2020		478,000,000
Beginning balance (in shares) at Dec. 31, 2020			79,000,000
Balance at beginning of period at Dec. 31, 2020	2,216	$ 48	$ (1,823)	1,804	2	2,185
Increase (Decrease) in Stockholders' Equity
Net income	220
Ending balance (in shares) at Sep. 30, 2021		478,000,000
Ending balance (in shares) at Sep. 30, 2021			79,000,000
Balance at end of period at Sep. 30, 2021	2,327	$ 48	$ (1,823)	1,823	2	2,277
Beginning balance (in shares) at Mar. 31, 2021		478,000,000
Beginning balance (in shares) at Mar. 31, 2021			79,000,000
Balance at beginning of period at Mar. 31, 2021	2,306	$ 48	$ (1,823)	1,808	2	2,271
Increase (Decrease) in Stockholders' Equity
Net income	30					30
Stock amortization and vesting	8			8
Common stock cash dividends	(44)					(44)
Ending balance (in shares) at Jun. 30, 2021		478,000,000
Ending balance (in shares) at Jun. 30, 2021			79,000,000
Balance at end of period at Jun. 30, 2021	2,300	$ 48	$ (1,823)	1,816	2	2,257
Increase (Decrease) in Stockholders' Equity
Net income	64					64
Stock amortization and vesting	7			7
Common stock cash dividends	(44)					(44)
Ending balance (in shares) at Sep. 30, 2021		478,000,000
Ending balance (in shares) at Sep. 30, 2021			79,000,000
Balance at end of period at Sep. 30, 2021	$ 2,327	$ 48	$ (1,823)	1,823	2	2,277
Beginning balance (in shares) at Dec. 31, 2021		893,000,000
Beginning balance (in shares) at Dec. 31, 2021	79,082,385		79,000,000
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)	8,000,000
Treasury stock repurchases	$ (192)
Common stock cash dividends	(455)					(455)
Preferred stock cash dividends	(1)					(1)
Other comprehensive income	4				4
Ending balance (in shares) at Mar. 31, 2022		893,000,000
Ending balance (in shares) at Mar. 31, 2022			87,000,000
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, 2021		893,000,000
Beginning balance (in shares) at Dec. 31, 2021	79,082,385		79,000,000
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	$ 3,033
Treasury stock repurchases (in shares)	28,000,000
Treasury stock repurchases	$ (740)
Ending balance (in shares) at Sep. 30, 2022		895,000,000
Ending balance (in shares) at Sep. 30, 2022	107,074,560		107,000,000
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		893,000,000
Beginning balance (in shares) at Mar. 31, 2022			87,000,000
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)		1,000,000
Conversion of Cimarex redeemable preferred stock	28			28
Treasury stock repurchases (in shares)			12,000,000
Treasury stock repurchases	(321)		$ (321)
Common stock cash dividends	(484)					(484)
Ending balance (in shares) at Jun. 30, 2022		894,000,000
Ending balance (in shares) at Jun. 30, 2022			99,000,000
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)		1,000,000
Stock amortization and vesting	15	$ 1		14
Treasury stock repurchases (in shares)			8,000,000
Treasury stock repurchases	(227)		$ (227)
Common stock cash dividends	(519)					(519)
Other comprehensive income	$ 1				1
Ending balance (in shares) at Sep. 30, 2022		895,000,000
Ending balance (in shares) at Sep. 30, 2022	107,074,560		107,000,000
Balance at end of period at Sep. 30, 2022	$ 12,659	$ 90	$ (2,566)	$ 10,992	$ 6	$ 4,137