CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Millions	Total	Class A Warrants	Class B Warrants	Class C Warrants	Preferred Stock	Common Stock	Additional Paid-in Capital	Additional Paid-in Capital Class A Warrants	Additional Paid-in Capital Class B Warrants	Additional Paid-in Capital Class C Warrants	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income
Preferred stock, shares outstanding, beginning balance (in shares) at Dec. 31, 2020					5,563,358
Beginning balance (in shares) at Dec. 31, 2020						9,780,547
Beginning balance at Dec. 31, 2020	$ (5,341)				$ 1,631	$ 0	$ 16,937				$ (23,954)	$ 45
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock for Marcellus Acquisition	0
Share-based compensation (in shares)						67
Share-based compensation	3						3
Hedging activity	3											3
Net income (loss)	5,383										5,383
Cancellation of Predecessor Equity (in shares)					(5,563,358)	(9,780,614)
Cancellation of Predecessor Equity	(48)				$ (1,631)		(16,940)				18,571	(48)
Issuance of Successor common stock (in shares)						97,907,081
Issuance of Successor common stock	3,331					$ 1	3,330
Issuance of common stock for warrant exercise		$ 93	$ 94	$ 68				$ 93	$ 94	$ 68
Preferred stock, shares outstanding, ending balance (in shares) at Feb. 09, 2021					0
Ending balance (in shares) at Feb. 09, 2021						97,907,081
Ending balance at Feb. 09, 2021	3,586				$ 0	$ 1	3,585				0	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	295										295
Preferred stock, shares outstanding, ending balance (in shares) at Mar. 31, 2021					0
Ending balance (in shares) at Mar. 31, 2021						97,907,081
Ending balance at Mar. 31, 2021	3,881				$ 0	$ 1	3,585				295	0
Preferred stock, shares outstanding, beginning balance (in shares) at Feb. 09, 2021					0
Beginning balance (in shares) at Feb. 09, 2021						97,907,081
Beginning balance at Feb. 09, 2021	3,586				$ 0	$ 1	3,585				0	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock for Marcellus Acquisition	0
Hedging activity	0
Preferred stock, shares outstanding, ending balance (in shares) at Sep. 30, 2021					0
Ending balance (in shares) at Sep. 30, 2021						98,286,731
Ending balance at Sep. 30, 2021	3,038				$ 0	$ 1	3,594				(557)	0
Preferred stock, shares outstanding, beginning balance (in shares) at Mar. 31, 2021					0
Beginning balance (in shares) at Mar. 31, 2021						97,907,081
Beginning balance at Mar. 31, 2021	3,881				$ 0	$ 1	3,585				295	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation (in shares)						921
Share-based compensation	3						3
Issuance of common stock for warrant exercise (in shares)						46,035
Issuance of common stock for warrant exercise	2						2
Net income (loss)	(439)										(439)
Dividends on common stock	(34)										(34)
Preferred stock, shares outstanding, ending balance (in shares) at Jun. 30, 2021					0
Ending balance (in shares) at Jun. 30, 2021						97,954,037
Ending balance at Jun. 30, 2021	3,413				$ 0	$ 1	3,590				(178)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation (in shares)						761
Share-based compensation	4						4
Hedging activity	0
Issuance of common stock for warrant exercise (in shares)						6,218
Issuance of common stock for warrant exercise	0
Issuance of reserved common stock and warrants (in shares)						325,715
Issuance of reserved common stock and warrants	0
Net income (loss)	(345)										(345)
Dividends on common stock	(34)										(34)
Preferred stock, shares outstanding, ending balance (in shares) at Sep. 30, 2021					0
Ending balance (in shares) at Sep. 30, 2021						98,286,731
Ending balance at Sep. 30, 2021	3,038				$ 0	$ 1	3,594				(557)	0
Preferred stock, shares outstanding, beginning balance (in shares) at Dec. 31, 2021					0
Beginning balance (in shares) at Dec. 31, 2021						117,917,349
Beginning balance at Dec. 31, 2021	5,671				$ 0	$ 1	4,845				825	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock for Marcellus Acquisition (in shares)						9,442,185
Issuance of common stock for Marcellus Acquisition	764						764
Share-based compensation (in shares)						23,169
Share-based compensation	5						5
Issuance of common stock for warrant exercise (in shares)						669,669
Issuance of common stock for warrant exercise	1						1
Repurchase and retirement of common stock (in shares)						(1,000,000)
Repurchase and retirement of common stock	(83)										(83)
Net income (loss)	(764)										(764)
Dividends on common stock	(211)										(211)
Preferred stock, shares outstanding, ending balance (in shares) at Mar. 31, 2022					0
Ending balance (in shares) at Mar. 31, 2022						127,052,372
Ending balance at Mar. 31, 2022	5,383				$ 0	$ 1	5,615				(233)	0
Preferred stock, shares outstanding, beginning balance (in shares) at Dec. 31, 2021					0
Beginning balance (in shares) at Dec. 31, 2021						117,917,349
Beginning balance at Dec. 31, 2021	5,671				$ 0	$ 1	4,845				825	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock for Marcellus Acquisition	764
Hedging activity	0
Preferred stock, shares outstanding, ending balance (in shares) at Sep. 30, 2022					0
Ending balance (in shares) at Sep. 30, 2022						121,334,663
Ending balance at Sep. 30, 2022	6,347				$ 0	$ 1	5,627				719	0
Preferred stock, shares outstanding, beginning balance (in shares) at Mar. 31, 2022					0
Beginning balance (in shares) at Mar. 31, 2022						127,052,372
Beginning balance at Mar. 31, 2022	5,383				$ 0	$ 1	5,615				(233)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation (in shares)						146,054
Share-based compensation	3						3
Issuance of common stock for warrant exercise (in shares)						166,606
Issuance of common stock for warrant exercise	1						1
Issuance of reserved common stock and warrants (in shares)						36,951
Issuance of reserved common stock and warrants	0
Repurchase and retirement of common stock (in shares)						(5,811,727)
Repurchase and retirement of common stock	(515)										(515)
Net income (loss)	1,237										1,237
Dividends on common stock	(301)										(301)
Preferred stock, shares outstanding, ending balance (in shares) at Jun. 30, 2022					0
Ending balance (in shares) at Jun. 30, 2022						121,590,256
Ending balance at Jun. 30, 2022	5,808				$ 0	$ 1	5,619				188	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation (in shares)						991
Share-based compensation	7						7
Hedging activity	0
Issuance of common stock for warrant exercise (in shares)						493,016
Issuance of common stock for warrant exercise	$ 1						1
Repurchase and retirement of common stock (in shares)	(750,000)					(749,600)
Repurchase and retirement of common stock	$ (69)										(69)
Net income (loss)	883										883
Dividends on common stock	(283)										(283)
Preferred stock, shares outstanding, ending balance (in shares) at Sep. 30, 2022					0
Ending balance (in shares) at Sep. 30, 2022						121,334,663
Ending balance at Sep. 30, 2022	$ 6,347				$ 0	$ 1	$ 5,627				$ 719	$ 0