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	Treasury Stock	Non-controlling Interest
Beginning balance (in shares) at Dec. 31, 2019					5,563,458	9,772,793
Beginning balance at Dec. 31, 2019	$ 4,401				$ 1,631	$ 0	$ 16,973				$ (14,220)	$ 12	$ (32)	$ 37
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation (in shares)						10,980
Stock-based compensation	(31)						(31)
Dividends on preferred stock	(22)						(22)
Hedging activity	9											9
Net income (loss) attributable to Chesapeake	(8,297)										(8,297)
Purchase of shares for company benefit plans	(2)												(2)
Release of shares for company benefit plans	34												34
Net loss attributable to noncontrolling interests	(16)													(16)
Ending balance (in shares) at Mar. 31, 2020					5,563,458	9,783,773
Ending balance at Mar. 31, 2020	(3,924)				$ 1,631	$ 0	16,920				(22,517)	21	0	21
Beginning balance (in shares) at Dec. 31, 2020					5,563,358	9,780,547
Beginning balance at Dec. 31, 2020	(5,341)				$ 1,631	$ 0	16,937				(23,954)	45	0	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation (in shares)						67
Stock-based compensation	3						3
Hedging activity	3											3
Net income (loss) attributable to Chesapeake	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 Successor warrants		$ 93	$ 94	$ 68				$ 93	$ 94	$ 68
Net loss attributable to noncontrolling interests	0
Ending balance (in shares) at Feb. 09, 2021					0	97,907,081
Ending balance at Feb. 09, 2021	3,586				$ 0	$ 1	3,585				0	0	0	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation (in shares)						0
Stock-based compensation	0						0
Hedging activity	0
Net income (loss) attributable to Chesapeake	295										295
Net loss attributable to noncontrolling interests	0
Ending balance (in shares) at Mar. 31, 2021					0	97,907,081
Ending balance at Mar. 31, 2021	$ 3,881				$ 0	$ 1	$ 3,585				$ 295	$ 0	$ 0	$ 0