CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
REVENUES AND OTHER:
Revenues	$ 2,196	$ 2,524	[1]
Gains on sales of assets	19	19	[1],[2]
OPERATING EXPENSES:
Production taxes	34	31	[1]
General and administrative	103	87	[1]
Restructuring and other termination costs	0	38	[1]
Provision for legal contingencies, net	0	5	[1]
Depreciation, depletion and amortization	519	459	[1],[2]
Impairments	1	10	[1],[2]
Other operating expense	61	0	[1]
Total Operating Expenses	2,378	2,482	[1]
INCOME (LOSS) FROM OPERATIONS	(182)	42	[1]
OTHER INCOME (EXPENSE):
Interest expense	(161)	(162)	[1]
Gains (losses) on investments	(1)	139	[1]
Other income (expense)	9	(1)	[1]
Total Other Expense	(153)	(24)	[1]
INCOME (LOSS) BEFORE INCOME TAXES	(335)	18	[1]
Income tax benefit	(314)	0	[1]
NET INCOME (LOSS)	(21)	18	[2],[3]
Net income attributable to noncontrolling interests	0	(1)	[3]
NET INCOME (LOSS) ATTRIBUTABLE TO CHESAPEAKE	(21)	17	[1]
Preferred stock dividends	(23)	(23)	[1]
NET LOSS AVAILABLE TO COMMON STOCKHOLDERS	$ (44)	$ (6)	[1]
EARNINGS (LOSS) PER COMMON SHARE:
Basic (in dollars per share)	$ (0.03)	$ (0.01)	[1]
Diluted (in dollars per share)	$ (0.03)	$ (0.01)	[1]
WEIGHTED AVERAGE COMMON AND COMMON EQUIVALENT SHARES OUTSTANDING (in millions):
Basic (in shares)	1,380	907	[1]
Diluted (in shares)	1,380	907	[1]
Oil, natural gas and NGL
REVENUES AND OTHER:
Revenues	$ 929	$ 1,243	[1]
Marketing
REVENUES AND OTHER:
Revenues	1,233	1,246	[1]
OPERATING EXPENSES:
Expense	1,230	1,268	[1]
Oil, natural gas and NGL and Marketing
REVENUES AND OTHER:
Revenues	2,162	2,489	[1]
Other
REVENUES AND OTHER:
Revenues	15	16	[1]
Oil, natural gas and NGL production
OPERATING EXPENSES:
Expense	132	147	[1]
Oil, natural gas and NGL gathering, processing and transportation
OPERATING EXPENSES:
Expense	274	356	[1]
Exploration
OPERATING EXPENSES:
Expense	$ 24	$ 81	[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.