Basis of Presentation Basis of Presentation, Condensed Consolidated Statements of Comprehensive Income (Loss) Restatements Table (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net loss	$ (17)	$ (1,214)	$ 619	$ (4,058)
Comprehensive loss	(9)	(1,211)	648	(4,060)
Comprehensive loss attributable to Chesapeake	$ (10)	(1,212)	$ 645	(4,061)
Scenario, Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net loss		(1,154)		(3,825)
Comprehensive loss		(1,151)		(3,827)
Comprehensive loss attributable to Chesapeake		(1,152)		(3,828)
Restatement Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net loss		(60)		(233)
Comprehensive loss		(60)		(233)
Comprehensive loss attributable to Chesapeake		$ (60)		$ (233)