Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Narrative (Details)

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Summary of Significant Accounting Policies - Narrative (Details)
12 Months Ended
Dec. 31, 2021
USD ($)
segment
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Accounting Policies [Line Items]      
Computation of proved reserves, discount factor as percent 10.00%    
Impairment of evaluated oil and gas properties | $ $ 0 $ 2,547,241,000 $ 0
Decrease in the 12-month average realized price of oil (75.00%) 31.00% 8.00%
Performance obligation, description of timing The Company records revenue in the month production is delivered to the purchaser. However, settlement statements for sales may not be received for 30 to 90 days after the date production is delivered, and as a result, the Company is required to estimate the amount of production delivered to the purchaser and the price that will be received for the sale of the product.    
Number of operating segments | segment 1    
RSU equity awards | Employees      
Accounting Policies [Line Items]      
Vesting period 3 years    
RSU equity awards | Directors      
Accounting Policies [Line Items]      
Vesting period 1 year    
Cash-settleable RSU awards      
Accounting Policies [Line Items]      
Vesting period 3 years    
Minimum | Cash-settleable RSU awards      
Accounting Policies [Line Items]      
Expiration period 1 year    
Maximum | Cash-settleable RSU awards      
Accounting Policies [Line Items]      
Expiration period 5 years    
Other Property and Equipment | Minimum      
Accounting Policies [Line Items]      
Estimated useful lives of other property and equipment 2 years    
Other Property and Equipment | Maximum      
Accounting Policies [Line Items]      
Estimated useful lives of other property and equipment 20 years