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RECAPITALIZATION TRANSACTION - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Nov. 09, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Noncontrolling Interest [Line Items]        
Capital contributed $ 628,154 $ 0 $ 628,154 $ 0
Altus Midstream LP        
Noncontrolling Interest [Line Items]        
General partner, ownership interest   23.10%    
Apache | Altus Midstream LP        
Noncontrolling Interest [Line Items]        
Limited partners, ownership interest 76.90% 76.90%    
Class C Common Stock | Apache        
Noncontrolling Interest [Line Items]        
Common stock, ownership percentage   100.00%    
Class A Common Stock | Apache        
Noncontrolling Interest [Line Items]        
Common stock, ownership percentage   9.80%