CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018		Jun. 30, 2019		Jun. 30, 2018
REVENUES AND OTHER:
Revenues	$ 2,386	$ 2,289	[1]	$ 4,582		$ 4,813	[1]
Gains on sales of assets	1	18	[1]	20		37	[1],[2]
OPERATING EXPENSES:
Production taxes	40	26	[1]	74		57	[1]
General and administrative	89	105	[1]	192		192	[1]
Restructuring and other termination costs	0	0	[1]	0		38	[1]
Provision for legal contingencies, net	3	4	[1]	3		9	[1]
Depreciation, depletion and amortization	580	471	[1]	1,099		930	[1],[2]
Impairments	1	54	[1]	2		64	[1],[2]
Other operating (income) expense	3	(1)	[1]	64		(1)	[1]
Total Operating Expenses	2,108	2,449	[1]	4,486		4,931	[1]
INCOME (LOSS) FROM OPERATIONS	278	(160)	[1]	96		(118)	[1]
OTHER INCOME (EXPENSE):
Interest expense	(175)	(155)	[1]	(336)	[1]	(317)	[1]
Gains (losses) on investments	(23)	0	[1]	(24)		139	[1]
Other income	18	57	[1]	27	[1]	56	[1]
Total Other Expense	(180)	(98)	[1]	(333)	[1]	(122)	[1]
INCOME (LOSS) BEFORE INCOME TAXES	98	(258)	[1]	(237)	[1]	(240)	[1]
Income tax benefit	0	(9)	[1]	(314)	[1]	(9)	[1]
NET INCOME (LOSS)	98	(249)	[3]	77	[2],[3]	(231)	[2],[3]
Net income attributable to noncontrolling interests	0	0	[3]	0	[3]	(1)	[3]
NET INCOME (LOSS) ATTRIBUTABLE TO CHESAPEAKE	98	(249)	[1]	77	[1]	(232)	[1]
Preferred stock dividends	(23)	(23)	[1]	(46)		(46)	[1]
NET INCOME (LOSS) AVAILABLE TO COMMON STOCKHOLDERS	$ 75	$ (272)	[1]	$ 31		$ (278)	[1]
EARNINGS (LOSS) PER COMMON SHARE:
Basic (in dollars per share)	$ 0.05	$ (0.30)	[1]	$ 0.02		$ (0.31)	[1]
Diluted (in dollars per share)	$ 0.05	$ (0.30)	[1]	$ 0.02		$ (0.31)	[1]
WEIGHTED AVERAGE COMMON AND COMMON EQUIVALENT SHARES OUTSTANDING (in millions):
Basic (in shares)	1,628	909	[1]	1,505		908	[1]
Diluted (in shares)	1,628	909	[1]	1,505		908	[1]
Oil, natural gas and NGL
REVENUES AND OTHER:
Revenues	$ 1,454	$ 982	[1]	$ 2,383		$ 2,225	[1]
Marketing
REVENUES AND OTHER:
Revenues	916	1,273	[1]	2,149		2,519	[1]
OPERATING EXPENSES:
Expense	940	1,292	[1]	2,170		2,560	[1]
Oil, natural gas and NGL and Marketing
REVENUES AND OTHER:
Revenues	2,370	2,255	[1]	4,532		4,744	[1]
Other
REVENUES AND OTHER:
Revenues	15	16	[1]	30		32	[1]
Oil, natural gas and NGL production
OPERATING EXPENSES:
Expense	166	138	[1]	298		285	[1]
Oil, natural gas and NGL gathering, processing and transportation
OPERATING EXPENSES:
Expense	271	340	[1]	545		696	[1]
Exploration
OPERATING EXPENSES:
Expense	$ 15	$ 20	[1]	$ 39		$ 101	[1]

[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.