CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
REVENUES:
Revenues	$ 10,231	$ 9,496	$ 7,872
Revenue from contracts with customers	5,189
OPERATING EXPENSES:
Production taxes	124	89	74
General and administrative	280	262	240
Restructuring and other termination costs	38	0	6
Provision for legal contingencies, net	26	(38)	123
Depreciation, depletion and amortization	1,145	995	1,107
Loss on sale of oil and natural gas properties	578	0	0
Impairments	53	5	3,025
Other operating expenses	10	413	365
Total Operating Expenses	9,349	8,357	12,283
INCOME (LOSS) FROM OPERATIONS	882	1,139	(4,411)
OTHER INCOME (EXPENSE):
Interest expense	(487)	(426)	(296)
Gains (losses) on investments	139	0	(137)
Gains on purchases or exchanges of debt	263	233	236
Other income	70	9	19
Total Other Expense	(15)	(184)	(178)
INCOME (LOSS) BEFORE INCOME TAXES	867	955	(4,589)
Current income taxes	0	(9)	(19)
Deferred income taxes	(10)	11	(171)
Total Income Tax Expense (Benefit)	(10)	2	(190)
NET INCOME (LOSS)	877	953	(4,399)
Net (income) loss attributable to noncontrolling interests	(4)	(4)	9
NET INCOME (LOSS) ATTRIBUTABLE TO CHESAPEAKE	873	949	(4,390)
Preferred stock dividends	(92)	(85)	(97)
Loss on exchange of preferred stock	0	(41)	(428)
Earnings allocated to participating securities	(6)	(10)	0
NET INCOME (LOSS) AVAILABLE TO COMMON STOCKHOLDERS	$ 775	$ 813	$ (4,915)
EARNINGS (LOSS) PER COMMON SHARE:
Basic (in usd per share)	$ 0.85	$ 0.90	$ (6.43)
Diluted (in usd per share)	$ 0.85	$ 0.90	$ (6.43)
WEIGHTED AVERAGE COMMON AND COMMON EQUIVALENT SHARES OUTSTANDING (in millions):
Basic (in shares)	909	906	764
Diluted (in shares)	909	906	764
Oil, Natural Gas and NGL [Member]
REVENUES:
Revenues	$ 5,155	$ 4,985	$ 3,288
Oil, natural gas and NGL production [Member]
OPERATING EXPENSES:
Cost of goods and services	539	562	710
Oil, natural gas and NGL gathering, processing and transportation [Member]
OPERATING EXPENSES:
Cost of goods and services	1,398	1,471	1,855
Marketing [Member]
REVENUES:
Revenue from contracts with customers	5,076	4,511	4,584
OPERATING EXPENSES:
Cost of goods and services	$ 5,158	$ 4,598	$ 4,778