CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	[1]	Sep. 30, 2019	Sep. 30, 2018	[1]
REVENUES AND OTHER:
Revenues	$ 2,087	$ 2,424		$ 6,669	$ 7,237
Gains (losses) on sales of assets	13	(10)		33	27	[2]
OPERATING EXPENSES:
Production taxes	35	34		109	91
General and administrative	66	81		258	273
Restructuring and other termination costs	0	0		0	38
Provision for legal contingencies, net	0	8		3	17
Depreciation, depletion and amortization	573	405		1,672	1,335	[2]
Impairments	9	58		11	122	[2]
Other operating (income) expense	15	0		79	(1)
Total Operating Expenses	2,041	2,342		6,527	7,273
INCOME (LOSS) FROM OPERATIONS	46	82		142	(36)
OTHER INCOME (EXPENSE):
Interest expense	(177)	(165)		(513)	(482)
Gains (losses) on investments	(4)	0		(28)	139
Gains (losses) on purchases or exchanges of debt	70	(68)		70	(68)
Other income	3	6		30	62
Total Other Expense	(108)	(227)		(441)	(349)
LOSS BEFORE INCOME TAXES	(62)	(145)		(299)	(385)
Income tax expense (benefit)	(1)	1		(315)	(8)
NET INCOME (LOSS)	(61)	(146)	[3]	16	(377)	[2],[3]
Net income attributable to noncontrolling interests	0	0	[3]	0	(1)	[3]
NET INCOME (LOSS) ATTRIBUTABLE TO CHESAPEAKE	(61)	(146)		16	(378)
Preferred stock dividends	(23)	(23)		(69)	(69)
Loss on exchange of preferred stock	(17)	0		(17)	0
NET LOSS AVAILABLE TO COMMON STOCKHOLDERS	$ (101)	$ (169)		$ (70)	$ (447)
LOSS PER COMMON SHARE:
Basic (in dollars per share)	$ (0.06)	$ (0.19)		$ (0.04)	$ (0.49)
Diluted (in dollars per share)	$ (0.06)	$ (0.19)		$ (0.04)	$ (0.49)
WEIGHTED AVERAGE COMMON AND COMMON EQUIVALENT SHARES OUTSTANDING (in millions):
Basic (in shares)	1,698	910		1,570	909
Diluted (in shares)	1,698	910		1,570	909
Oil, natural gas and NGL
REVENUES AND OTHER:
Revenues	$ 1,170	$ 1,199		$ 3,553	$ 3,424
Marketing
REVENUES AND OTHER:
Revenues	889	1,219		3,038	3,738
OPERATING EXPENSES:
Expense	901	1,238		3,071	3,798
Oil, natural gas and NGL and Marketing
REVENUES AND OTHER:
Revenues	2,059	2,418		6,591	7,162
Other
REVENUES AND OTHER:
Revenues	15	16		45	48
Oil, natural gas and NGL production
OPERATING EXPENSES:
Expense	155	132		453	417
Oil, natural gas and NGL gathering, processing and transportation
OPERATING EXPENSES:
Expense	270	364		815	1,060
Exploration
OPERATING EXPENSES:
Expense	$ 17	$ 22		$ 56	$ 123

[1] Financial information for 2018 has been recast to reflect the retrospective application of the successful efforts method of accounting. See Note 1.

[2] Financial information for 2018 has been recast to reflect the retrospective application of the successful efforts method of accounting. See Note 1.

[3] Financial information for 2018 has been recast to reflect the retrospective application of the successful efforts method of accounting. See Note 1.