Fresh Start Accounting - Condensed Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Nov. 19, 2020	Nov. 18, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 593,151	$ 172,114		$ 4,241
Restricted cash				11,800
Accounts receivable, net	781,738	377,202		234,413
Inventory	54,411	28,956		21,969
Prepaid expenses	17,624	6,016		3,760
Derivative instruments	23,735	0		728
Other current assets	11,853	1,836		104
Current assets held for sale		1,029,318		62,070
Total current assets	1,482,512	1,615,442		339,085
Property, plant and equipment
Oil and gas properties (successful efforts method)	5,120,121	1,395,837		795,247
Other property and equipment	72,973	48,981		44,999
Less: accumulated depreciation, depletion and amortization	(481,751)	(124,386)		0
Total property, plant and equipment, net	4,711,343	1,320,432		840,246
Derivative instruments	37,965	44,865		47
Long-term inventory	22,009	17,510		12,234
Operating right-of-use assets	23,875	15,782		10,712
Other assets	22,576	12,756		18,754
Non-current assets held for sale				1,016,913
Total assets	6,631,081	3,026,787		2,237,991
Current liabilities
Accounts payable	29,056	2,136		21,518
Revenues and production taxes payable	607,964	270,306		129,031
Accrued liabilities	362,454	150,674		105,916
Current maturities of long-term debt				0
Accrued interest payable	3,172	2,150		42
Derivative instruments	341,541	89,447		4,969
Advances from joint interest partners	3,736	1,892		2,725
Current operating lease liabilities	9,941	7,893		957
Other current liabilities	3,469	1,046		1,638
Current liabilities held for sale	0	699,653		38,796
Total current liabilities	1,361,333	1,225,197		305,592
Long-term debt	394,209	392,524		340,000
Deferred tax liabilities	0	7		4,431
Asset retirement obligations	146,029	57,604		45,161
Derivative instruments	2,829	115,282		5,357
Operating lease liabilities	13,266	6,724		14,794
Other liabilities	33,617	7,876		3,504
Liabilities subject to compromise				0
Non-current liabilities held for sale				460,721
Total liabilities	1,951,283	1,805,214		1,179,560
Commitments and contingencies
Stockholders’ equity (deficit)
Common stock	438	200		200
Predecessor treasury stock, at cost	(251,950)	(100,000)
Additional paid-in-capital				965,415
Retained earnings	1,445,491	269,690		0
Chord share of stockholders’ equity	4,679,798	1,032,900		965,615
Non-controlling interests	0	188,673		92,816
Total stockholders’ equity	4,679,798	1,221,573	$ 1,012,739	1,058,431		$ 3,837,081
Total liabilities and stockholders’ equity	$ 6,631,081	$ 3,026,787		2,237,991
Predecessor
Current assets
Cash and cash equivalents				69,558
Restricted cash				0
Accounts receivable, net				234,413
Inventory				19,867
Prepaid expenses				8,085
Derivative instruments				728
Other current assets				104
Current assets held for sale				62,070
Total current assets				394,825
Property, plant and equipment
Oil and gas properties (successful efforts method)				9,301,065
Other property and equipment				105,410
Less: accumulated depreciation, depletion and amortization				(8,332,534)
Total property, plant and equipment, net				1,073,941
Derivative instruments				47
Long-term inventory				12,526
Operating right-of-use assets				11,509
Other assets				19,876
Non-current assets held for sale				921,031
Total assets				2,433,755
Current liabilities
Accounts payable				(291)
Revenues and production taxes payable				129,031
Accrued liabilities				46,561
Current maturities of long-term debt				360,640
Accrued interest payable				32,538
Derivative instruments				4,902
Advances from joint interest partners				170
Current operating lease liabilities				109
Other current liabilities				(102)
Current liabilities held for sale				66,810
Total current liabilities				640,368
Long-term debt				0
Deferred tax liabilities				1,097
Asset retirement obligations				283
Derivative instruments				5,316
Operating lease liabilities				72
Other liabilities				80
Liabilities subject to compromise				2,051,294
Non-current liabilities held for sale				461,859
Total liabilities				3,160,369
Commitments and contingencies
Stockholders’ equity (deficit)
Common stock				3,233
Predecessor treasury stock, at cost				(36,637)
Additional paid-in-capital				3,131,446
Retained earnings				(3,995,209)
Chord share of stockholders’ equity				(897,167)
Non-controlling interests				170,553
Total stockholders’ equity				(726,614)
Total liabilities and stockholders’ equity				2,433,755
Reorganization Adjustments
Current assets
Cash and cash equivalents				(65,317)
Restricted cash				11,800
Accounts receivable, net				0
Inventory				0
Prepaid expenses				(4,325)
Derivative instruments				0
Other current assets				0
Current assets held for sale				0
Total current assets				(57,842)
Property, plant and equipment
Oil and gas properties (successful efforts method)				0
Other property and equipment				0
Less: accumulated depreciation, depletion and amortization				0
Total property, plant and equipment, net				0
Derivative instruments				0
Long-term inventory				0
Operating right-of-use assets				0
Other assets				7,017
Non-current assets held for sale				0
Total assets				(50,825)
Current liabilities
Accounts payable				21,809
Revenues and production taxes payable				0
Accrued liabilities				57,470
Current maturities of long-term debt				(360,640)
Accrued interest payable				(32,496)
Derivative instruments				49
Advances from joint interest partners				2,555
Current operating lease liabilities				924
Other current liabilities				1,774
Current liabilities held for sale				(28,014)
Total current liabilities				(336,569)
Long-term debt				340,000
Deferred tax liabilities				9,746
Asset retirement obligations				57,306
Derivative instruments				0
Operating lease liabilities				15,462
Other liabilities				3,456
Liabilities subject to compromise				(2,051,294)
Non-current liabilities held for sale				0
Total liabilities				(1,961,893)
Commitments and contingencies
Stockholders’ equity (deficit)
Common stock				200	$ (3,233)
Predecessor treasury stock, at cost				36,637
Additional paid-in-capital				965,415	(3,131,446)
Retained earnings				4,034,401
Chord share of stockholders’ equity				1,901,974
Non-controlling interests				9,094
Total stockholders’ equity				1,911,068
Total liabilities and stockholders’ equity				(50,825)
Fresh Start Adjustments
Current assets
Cash and cash equivalents				0
Restricted cash				0
Accounts receivable, net				0
Inventory				2,102
Prepaid expenses				0
Derivative instruments				0
Other current assets				0
Current assets held for sale				0
Total current assets				2,102
Property, plant and equipment
Oil and gas properties (successful efforts method)				(8,505,818)
Other property and equipment				(60,411)
Less: accumulated depreciation, depletion and amortization				8,332,534
Total property, plant and equipment, net				(233,695)
Derivative instruments				0
Long-term inventory				(292)
Operating right-of-use assets				(797)
Other assets				(8,139)
Non-current assets held for sale				95,882
Total assets				(144,939)
Current liabilities
Accounts payable				0
Revenues and production taxes payable				0
Accrued liabilities				1,885
Current maturities of long-term debt				0
Accrued interest payable				0
Derivative instruments				18
Advances from joint interest partners				0
Current operating lease liabilities				(76)
Other current liabilities				(34)
Current liabilities held for sale				0
Total current liabilities				1,793
Long-term debt				0
Deferred tax liabilities				(6,412)
Asset retirement obligations				(12,428)
Derivative instruments				41
Operating lease liabilities				(740)
Other liabilities				(32)
Liabilities subject to compromise				0
Non-current liabilities held for sale				(1,138)
Total liabilities				(18,916)
Commitments and contingencies
Stockholders’ equity (deficit)
Common stock				0	$ 0
Predecessor treasury stock, at cost				0
Additional paid-in-capital				0
Retained earnings				(39,192)
Chord share of stockholders’ equity				(39,192)
Non-controlling interests				(86,831)
Total stockholders’ equity				(126,023)
Total liabilities and stockholders’ equity				$ (144,939)