CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
REVENUES:
Natural gas, oil and NGL	$ 2,406	$ 2,117	$ 3,858	$ 3,185
Marketing, gathering and compression	2,057	1,113	3,838	2,328
Oilfield services	212	159	402	294
Total Revenues	4,675	3,389	8,098	5,807
OPERATING EXPENSES:
Natural gas, oil and NGL production	288	335	595	685
Production taxes	59	41	112	89
Marketing, gathering and compression	2,028	1,096	3,772	2,292
Oilfield services	177	109	332	205
General and administrative	106	155	216	291
Employee retirement and other termination benefits	7	1	140	1
Natural gas, oil and NGL depreciation, depletion and amortization	645	588	1,293	1,094
Depreciation and amortization of other assets	76	83	154	166
Impairments of fixed assets and other	231	243	258	243
Net gains on sales of fixed assets	(109)	0	(158)	(2)
Total Operating Expenses	3,508	2,651	6,714	5,064
INCOME FROM OPERATIONS	1,167	738	1,384	743
OTHER INCOME (EXPENSE):
Interest expense	(104)	(14)	(124)	(26)
Earnings (losses) on investments	23	(59)	(4)	(64)
Impairment of investment	0	0	(10)	0
Gains (losses) on sales of investments	(10)	1,030	(10)	1,030
Losses on purchases of debt	(70)	0	(70)	0
Other income	3	5	8	11
Total Other Income (Expense)	(158)	962	(210)	951
INCOME BEFORE INCOME TAXES	1,009	1,700	1,174	1,694
INCOME TAX EXPENSE:
Current income taxes	2	2	3	2
Deferred income taxes	382	661	443	659
Total Income Tax Expense	384	663	446	661
NET INCOME	625	1,037	728	1,033
Net income attributable to noncontrolling interests	(45)	(65)	(89)	(89)
NET INCOME ATTRIBUTABLE TO CHESAPEAKE	580	972	639	944
Preferred stock dividends	(43)	(43)	(86)	(86)
Premium on purchase of preferred shares of a subsidiary	(69)	0	(69)	0
Earnings allocated to participating securities	(11)	0	(11)	0
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 457	$ 929	$ 473	$ 858
EARNINGS PER COMMON SHARE:
Basic	$ 0.70	$ 1.45	$ 0.72	$ 1.34
Diluted	$ 0.66	$ 1.29	$ 0.72	$ 1.25
CASH DIVIDEND DECLARED PER COMMON SHARE	$ 0.0875	$ 0.0875	$ 0.175	$ 0.175
WEIGHTED AVERAGE COMMON AND COMMON EQUIVALENT SHARES OUTSTANDING (in millions):
Basic	653	642	653	642
Diluted	760	751	653	752