CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Millions		Total		PREFERRED STOCK:	COMMON STOCK:	ADDITIONAL PAID-IN CAPITAL:	ADDITIONAL PAID-IN CAPITAL: Exchange of preferred stock for shares of common stock	ADDITIONAL PAID-IN CAPITAL: Exchange of senior notes for shares of common stock	ADDITIONAL PAID-IN CAPITAL: Exchange of convertible senior notes for common stock	ACCUMULATED DEFICIT:		ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS):	TREASURY STOCK – COMMON:	TOTAL CHESAPEAKE STOCKHOLDERS’ EQUITY	NONCONTROLLING INTERESTS:
Chesapeake stockholders’ equity, beginning of period at Dec. 31, 2017	[1]			$ 1,671	$ 9	$ 14,437				$ (14,130)		$ (57)	$ (31)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exchange of 40,000, 0, 40,000 and 0 shares of preferred stock for common stock	[1]			0
Common shares issued for WildHorse Merger	[1]				0	0
Exchange of senior notes and convertible senior notes	[1]				0
Exchange of preferred stock	[1]						$ 0
Exchange of notes	[1]							$ 0	$ 0
Equity component of convertible notes repurchases	[1]					0
Stock-based compensation	[1]					26
Dividends on preferred stock	[1]					(69)
Net income (loss) attributable to Chesapeake		$ (378)	[2]							(378)	[1]
Hedging activity	[1]											25
Purchase of 53,337, 30,509, 2,673,903, and 1,499,033 shares for company benefit plans	[1]												(4)
Release of 37,301, 41,617, 296,864 and 431,474 shares from company benefit plans	[1]												4
Chesapeake stockholders’ equity, end of period at Sep. 30, 2018	[1]			1,671	9	14,394				(14,516)		(32)	(31)	$ 1,495
Stockholders' equity attributable to noncontrolling interest, beginning of period at Dec. 31, 2017	[1]														$ 44
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to noncontrolling interests		(1)	[2],[3]												1	[1]
Distributions to noncontrolling interest owners	[1]														(5)
Stockholders' equity attributable to noncontrolling interest, end of period at Sep. 30, 2018	[1]														40
Chesapeake stockholders’ equity, beginning of period at Jun. 30, 2018	[1]			1,671	9	14,408				(14,370)		(40)	(31)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exchange of 40,000, 0, 40,000 and 0 shares of preferred stock for common stock	[1]			0
Common shares issued for WildHorse Merger	[1]				0	0
Exchange of senior notes and convertible senior notes	[1]				0
Exchange of preferred stock	[1]						0
Exchange of notes	[1]							0	0
Equity component of convertible notes repurchases	[1]					0
Stock-based compensation	[1]					9
Dividends on preferred stock	[1]					(23)
Net income (loss) attributable to Chesapeake		(146)	[2]							(146)	[1]
Hedging activity	[1]											8
Purchase of 53,337, 30,509, 2,673,903, and 1,499,033 shares for company benefit plans	[1]												0
Release of 37,301, 41,617, 296,864 and 431,474 shares from company benefit plans	[1]												0
Chesapeake stockholders’ equity, end of period at Sep. 30, 2018	[1]			1,671	9	14,394				(14,516)		(32)	(31)	1,495
Stockholders' equity attributable to noncontrolling interest, beginning of period at Jun. 30, 2018	[1]														42
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to noncontrolling interests		0	[2],[3]												0	[1]
Distributions to noncontrolling interest owners	[1]														(2)
Stockholders' equity attributable to noncontrolling interest, end of period at Sep. 30, 2018	[1]														40
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total Equity	[1]	1,535
Total Equity		2,133
Chesapeake stockholders’ equity, beginning of period at Dec. 31, 2018		2,092		1,671	9	14,378				(13,912)		(23)	(31)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exchange of 40,000, 0, 40,000 and 0 shares of preferred stock for common stock				(40)
Common shares issued for WildHorse Merger					7	2,030
Exchange of senior notes and convertible senior notes					3
Exchange of preferred stock							40
Exchange of notes								438	134
Equity component of convertible notes repurchases						(2)
Stock-based compensation						26
Dividends on preferred stock						(69)
Net income (loss) attributable to Chesapeake		16								16
Hedging activity												26
Purchase of 53,337, 30,509, 2,673,903, and 1,499,033 shares for company benefit plans													(7)
Release of 37,301, 41,617, 296,864 and 431,474 shares from company benefit plans													2
Chesapeake stockholders’ equity, end of period at Sep. 30, 2019		4,696		1,631	19	16,975				(13,896)	[1]	3	(36)	4,696
Stockholders' equity attributable to noncontrolling interest, beginning of period at Dec. 31, 2018		41													41
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to noncontrolling interests		0													0
Distributions to noncontrolling interest owners															(2)
Stockholders' equity attributable to noncontrolling interest, end of period at Sep. 30, 2019		39													39
Chesapeake stockholders’ equity, beginning of period at Jun. 30, 2019				1,671	16	16,380				(13,835)		(5)	(36)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exchange of 40,000, 0, 40,000 and 0 shares of preferred stock for common stock				(40)
Common shares issued for WildHorse Merger					0	0
Exchange of senior notes and convertible senior notes					3
Exchange of preferred stock							$ 40
Exchange of notes								$ 438	$ 134
Equity component of convertible notes repurchases						(2)
Stock-based compensation						8
Dividends on preferred stock						(23)
Net income (loss) attributable to Chesapeake		(61)								(61)
Hedging activity												8
Purchase of 53,337, 30,509, 2,673,903, and 1,499,033 shares for company benefit plans													0
Release of 37,301, 41,617, 296,864 and 431,474 shares from company benefit plans													0
Chesapeake stockholders’ equity, end of period at Sep. 30, 2019		4,696		$ 1,631	$ 19	$ 16,975				$ (13,896)	[1]	$ 3	$ (36)	$ 4,696
Stockholders' equity attributable to noncontrolling interest, beginning of period at Jun. 30, 2019															39
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to noncontrolling interests		0													0
Distributions to noncontrolling interest owners															0
Stockholders' equity attributable to noncontrolling interest, end of period at Sep. 30, 2019		39													$ 39
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total Equity		$ 4,735

[1] Financial information for prior periods 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.