CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
REVENUES AND OTHER:
Gains on sales of assets		$ 1	$ 13	$ 1	$ 33
Revenues		975	2,087	4,037	6,669
OPERATING EXPENSES:
Severance and ad valorem taxes		37	55	116	168
General and administrative		52	66	229	258
Separation and other termination costs		16	0	43	0
Provision for legal contingencies, net		12	0	20	3
Depreciation, depletion and amortization		170	573	931	1,672
Impairments		0	9	8,522	11
Other operating expense		4	15	92	79
Total Operating Expenses		1,086	2,041	12,916	6,527
INCOME (LOSS) FROM OPERATIONS		(111)	46	(8,879)	142
OTHER INCOME (EXPENSE):
Interest expense		(25)	(177)	(307)	(513)
Losses on investments		0	(4)	(23)	(28)
Gains on purchases or exchanges of debt		0	70	65	70
Other income		2	3	14	30
Reorganization items, net		(611)	0	(217)	0
Total Other Expense		(634)	(108)	(468)	(441)
LOSS BEFORE INCOME TAXES		(745)	(62)	(9,347)	(299)
Income tax benefit		0	(1)	(13)	(315)
NET INCOME (LOSS)		(745)	(61)	(9,334)	16
Net loss attributable to noncontrolling interests		0	0	16	0
NET INCOME (LOSS) ATTRIBUTABLE TO CHESAPEAKE		(745)	(61)	(9,318)	16
Preferred stock dividends		0	(23)	(22)	(69)
Loss on exchange of preferred stock		0	(17)	0	(17)
NET LOSS AVAILABLE TO COMMON STOCKHOLDERS		$ (745)	$ (101)	$ (9,340)	$ (70)
LOSS PER COMMON SHARE:
Basic (in dollars per share)	[1]	$ (76.18)	$ (11.89)	$ (955.99)	$ (8.92)
Diluted (in dollars per share)	[1]	$ (76.18)	$ (11.89)	$ (955.99)	$ (8.92)
WEIGHTED AVERAGE COMMON AND COMMON EQUIVALENT SHARES OUTSTANDING
Basic (in shares)	[1]	9,780	8,492	9,770	7,848
Diluted (in shares)	[1]	9,780	8,492	9,770	7,848
Oil, natural gas and NGL
REVENUES AND OTHER:
Revenues		$ 511	$ 1,170	$ 2,579	$ 3,553
Marketing
REVENUES AND OTHER:
Revenues		448	889	1,412	3,038
OPERATING EXPENSES:
Expense		450	901	1,438	3,071
Oil, natural gas and NGL and Marketing
REVENUES AND OTHER:
Revenues		959	2,059	3,991	6,591
Other
REVENUES AND OTHER:
Revenues		15	15	45	45
Oil, natural gas and NGL production
OPERATING EXPENSES:
Expense		82	135	295	394
Oil, natural gas and NGL gathering, processing and transportation
OPERATING EXPENSES:
Expense		258	270	813	815
Exploration
OPERATING EXPENSES:
Expense		$ 5	$ 17	$ 417	$ 56

[1] Amounts and shares have been retroactively adjusted to reflect a 1-for-200 (1:200) reverse stock split effective April 14, 2020. See Note 9 for additional information.