Equity - Noncontrolling Interests Narrative (Details) $ / shares in Units, $ in Millions	1 Months Ended			2 Months Ended	3 Months Ended			9 Months Ended		12 Months Ended
	Jul. 31, 2014 USD ($) $ / shares	Mar. 30, 2012 USD ($) a well	Oct. 31, 2011 a County	Dec. 31, 2011 USD ($) well shares	Sep. 30, 2015 USD ($) well a $ / shares shares	Sep. 30, 2014 USD ($) shares	Dec. 31, 2011 USD ($) shares	Sep. 30, 2015 USD ($) a well Quarter $ / shares shares	Sep. 30, 2014 USD ($) shares	Dec. 31, 2012	Dec. 31, 2014 USD ($) $ / shares shares	Dec. 31, 2013 shares	Mar. 31, 2012 shares	Nov. 30, 2011 $ / shares shares
Noncontrolling Interest [Line Items]
Payments for (Proceeds from) Investments								$ 8	$ 14
Stockholders' Equity Attributable to Noncontrolling Interest					$ 264			264			$ 1,302
Net income (loss) attributable to noncontrolling interests					13	$ 30		50	110
Repurchase of preferred shares of CHK Utica					$ 0	$ (447)		$ 0	$ (447)
Common Stock, Shares, Issued | shares					665,042,789	665,046,000		665,042,789	665,046,000		664,944,232	666,192,000
Common stock, par value (usd per share) | $ / shares					$ 0.01			$ 0.01			$ 0.01
Noncontrolling Interest, Chesapeake Cleveland Tonkawa L.L.C [Member]
Noncontrolling Interest [Line Items]
Number Of Net Acres | a		245,000
Payments for (Proceeds from) Investments		$ 1,250
Preferred Stock, Shares Issued | shares													1,250,000
Overriding Royalty Interest Percentage													3.75%
Stockholders' Equity Attributable to Noncontrolling Interest											$ 1,015
Net income (loss) attributable to noncontrolling interests					$ 13	$ 19		$ 50	$ 56
Noncontrolling Interest, Chesapeake Cleveland Tonkawa L.L.C [Member] | Minimum [Member]
Noncontrolling Interest [Line Items]
Number of Wells, Net | well								300
Noncontrolling Interest, Chesapeake Cleveland Tonkawa L.L.C [Member] | Wells, Future Wells [Member]
Noncontrolling Interest [Line Items]
Number of Wells, Net | well		1,000
Noncontrolling Interest, Chesapeake Cleveland Tonkawa L.L.C [Member] | Wells, Drilled Wells [Member]
Noncontrolling Interest [Line Items]
Number of Wells, Net | well								190
Noncontrolling Interest, Chesapeake Utica L L C [Member]
Noncontrolling Interest [Line Items]
Number Of Net Acres | a			700,000
Payments for (Proceeds from) Investments				$ 1,250
Preferred Stock, Shares Issued | shares				1,250,000			1,250,000
Net income (loss) attributable to noncontrolling interests						6			43
Number Of Counties Present In Leasehold Land | County			13
Payments for Repurchase of Preferred Stock and Preference Stock	$ 1,254
Preferred Stock, Redemption Price Per Share | $ / shares	$ 1,189
Repurchase of preferred shares of CHK Utica								$ (447)
Noncontrolling Interest, Chesapeake Utica L L C [Member] | ORRI [Member]
Noncontrolling Interest [Line Items]
Overriding Royalty Interest Percentage				3.00%	3.00%		3.00%	3.00%
Number of Wells, Net | well				1,500				1,500
Percentage of increase in leasehold in which commitment to drill is not met								4.00%		4.00%
Spacing for Wells Drilled | a					150			150
Number of Wells Drilled, Net | well					482			482
Noncontrolling Interest, Chesapeake Utica L L C [Member] | Minimum [Member] | ORRI [Member]
Noncontrolling Interest [Line Items]
Number of Wells, Net | well								1,300
Noncontrolling Interest, Chesapeake Granite Wash Trust [Member]
Noncontrolling Interest [Line Items]
Number Of Net Acres | a								29,000
Stockholders' Equity Attributable to Noncontrolling Interest					$ 264			$ 264			$ 287
Net income (loss) attributable to noncontrolling interests					$ 1	$ 6		$ 0	$ 14
Common stock, par value (usd per share) | $ / shares														$ 19.00
Common Stock, Shares, Outstanding | shares					46,750,000			46,750,000
Percentage Of Beneficial Interest Owned								51.00%
Number of producing wells | well					69			69
Number of development wells drilled | well								103
Number Of Gross Acres | a								45,400
Maximum amount recoverable by trust under lien							$ 263	$ 33
Quarters of Paid Distributions | Quarter								13
Percentage of incentive distributions received								50.00%
Percentage of remaining cash available for distribution in excess of the incentive threshold								50.00%
Noncontrolling Interest, Chesapeake Granite Wash Trust [Member] | Minimum [Member]
Noncontrolling Interest [Line Items]
Percentage Of Proceeds From Royalty Interest Conveyed To Trust								50.00%
Noncontrolling Interest, Chesapeake Granite Wash Trust [Member] | Maximum [Member]
Noncontrolling Interest [Line Items]
Percentage Of Proceeds From Royalty Interest Conveyed To Trust								90.00%
Noncontrolling Interest, Chesapeake Granite Wash Trust [Member] | Wells, Initial Number of Wells [Member]
Noncontrolling Interest [Line Items]
Number of development wells drilled | well								118
Noncontrolling Interest, Chesapeake Granite Wash Trust [Member] | Common Unit [Member]
Noncontrolling Interest [Line Items]
Common Stock, Shares, Issued | shares														23,000,000
Common Stock, Shares, Outstanding | shares					12,062,500			12,062,500
Noncontrolling Interest, Chesapeake Granite Wash Trust [Member] | Subordinated Units [Member]
Noncontrolling Interest [Line Items]
Common Stock, Shares, Outstanding | shares					11,687,500			11,687,500