CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
NET INCOME (LOSS)		$ (9,750)	$ (308)	$ 228
OTHER COMPREHENSIVE INCOME, NET OF INCOME TAX:
Reclassification of losses on settled derivative instruments	[1]	33	35	34
Other Comprehensive Income		33	35	34
COMPREHENSIVE INCOME (LOSS)		(9,717)	(273)	262
COMPREHENSIVE (INCOME) LOSS ATTRIBUTABLE TO NONCONTROLLING INTERESTS		16	0	(2)
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO CHESAPEAKE		$ (9,701)	$ (273)	$ 260

[1] Deferred tax activity incurred in other comprehensive income was offset by a valuation allowance.