Employee Benefit Plans (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Jan. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Extinguished liabilities	$ 43
Chesapeake energy corporation savings and incentive stock bonus plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employer matching contribution		15.00%
Employer contribution amount		$ 24	$ 29	$ 31