Acquisitions of Oil and Natural Gas Properties (Details) - USD ($) $ in Thousands		12 Months Ended
	Apr. 20, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Acquisition costs		$ 7,616	$ 167	$ 10,977
Costs incurred, acquisition of unproved oil and gas properties		27,165	119,662	2,893,434
Costs Incurred, Acquisition of Oil and Gas Properties with Proved Reserves		24,855	17,310	482,160
Acquisition from Unaffiliated Individuals and Entities
Business Acquisition [Line Items]
Total consideration for acquisition				3,181,100
Costs incurred, acquisition of unproved oil and gas properties				2,716,900
Costs Incurred, Acquisition of Oil and Gas Properties with Proved Reserves				464,200
Double Eagle Acquisition
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	$ 2,469
Total consideration for acquisition	1,395,600
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables	20,756
BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedDerivatives	3,970
BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedProvedOilandNaturalGasProperties	353,000
BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedUnprovedOilandNaturalGasProperties	2,257,266
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	2,637,461
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable	(48,179)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent	(10,167)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	(58,346)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	$ 2,579,115
Leasehold Improvements
Business Acquisition [Line Items]
Acquisition costs		52,000	137,000	194,500
Costs incurred, acquisition of unproved oil and gas properties		27,100	119,700	$ 176,500
Costs Incurred, Acquisition of Oil and Gas Properties with Proved Reserves		$ 24,900	$ 17,300
PE Units | Double Eagle Acquisition
Business Acquisition [Line Items]
Consideration transferred (shares)	39,848,518
Class B common stock | Common Stock | Double Eagle Acquisition
Business Acquisition [Line Items]
Consideration transferred (shares)	39,848,518