Annual report pursuant to Section 13 and 15(d)

Divestitures - Narrative (Details)

v3.20.4
Divestitures - Narrative (Details) - USD ($)
1 Months Ended 12 Months Ended
Jan. 02, 2020
Jul. 03, 2019
Dec. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Business Acquisition [Line Items]            
Contingent consideration arrangement       $ 6,200,000    
Water Infrastructure Assets            
Business Acquisition [Line Items]            
Proceeds from sale of assets $ 50,000,000.0          
Incentive payments, term 15 years          
Contingent consideration arrangement $ 23,100,000          
Gain (loss) on disposal $ 0          
Utica Shale            
Business Acquisition [Line Items]            
Proceeds from sale of business     $ 29,000,000.0      
Bakken            
Business Acquisition [Line Items]            
Proceeds from sale of business         $ 7,000,000.0  
Louisiana Assets            
Business Acquisition [Line Items]            
Royalty interests   $ 9,200,000        
Contingent payments   2 years        
Asset retirement obligation liabilities removed       $ 30,000,000.0    
Louisiana Assets | Disposal Group, Disposed of by Sale, Not Discontinued Operations            
Business Acquisition [Line Items]            
Purchase price of sale           $ 19,700,000