Oil and Natural Gas Property Transactions - Purchase Price Allocation (Details) - USD ($) $ in Millions				12 Months Ended
	Nov. 01, 2021	Aug. 10, 2021	Feb. 01, 2019	Dec. 31, 2020
Vine Energy Corporation (Vine)
Consideration:
Cash	$ 253	$ 90
Fair value of Chesapeake’s common stock issued in the Merger	1,231
Restricted stock unit replacement awards	6
Total consideration	1,490	$ 1,500
Fair Value of Liabilities Assumed:
Current liabilities	765
Long-term debt	1,021
Deferred tax liabilities	49
Other long-term liabilities	272
Amounts attributable to liabilities assumed	2,107
Fair Value of Assets Acquired:
Cash and cash equivalents	59
Other current assets	206
Proved oil and natural gas properties	2,181
Unproved properties	1,118
Other property and equipment	1
Other long-term assets	32
Amounts attributable to assets acquired	3,597
Total identifiable net assets	$ 1,490
Wildhorse resource development corporation
Consideration:
Cash			$ 381	$ 381
Fair value of Chesapeake’s common stock issued in the Merger				2,037
Total consideration				2,418
Fair Value of Liabilities Assumed:
Current liabilities				166
Long-term debt				1,379
Deferred tax liabilities				314
Other long-term liabilities				36
Amounts attributable to liabilities assumed				1,895
Fair Value of Assets Acquired:
Cash and cash equivalents				28
Other current assets				128
Proved oil and natural gas properties				3,264
Unproved properties				756
Other property and equipment				77
Other long-term assets				60
Amounts attributable to assets acquired				4,313
Total identifiable net assets				$ 2,418