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TRANSACTIONS WITH AFFILIATES (Details)
a in Millions
12 Months Ended 14 Months Ended
Jan. 01, 2022
USD ($)
Nov. 09, 2018
USD ($)
contract
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
a
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2019
USD ($)
a
Dec. 31, 2019
USD ($)
a
Aug. 24, 2018
USD ($)
Mar. 21, 2018
USD ($)
Dec. 31, 2016
Related Party Transaction [Line Items]                        
Operations and maintenance expenses [1]         $ 55,858,000 $ 53,922,000 $ 16,597,000          
General and administrative expenses [2]         10,301,000 7,368,000 3,991,000          
Lease expense         700,000              
Capitalized interest         2,370,000 8,200,000 7,100,000          
Repayments of related party debt   $ 700,000                    
Affiliated Entity | Apache                        
Related Party Transaction [Line Items]                        
Operations and maintenance expenses         8,800,000 9,100,000 4,700,000          
Affiliated Entity | Apache | Service Agreements                        
Related Party Transaction [Line Items]                        
General and administrative expenses         $ 5,400,000 6,500,000 $ 4,000,000.0          
Affiliated Entity | Apache | Construction, Operations and Maintenance Agreement                        
Related Party Transaction [Line Items]                        
Expenses from transactions with related party                 $ 3,000,000.0      
Related party transaction, prior written notice period         30 days              
Related party transaction, maximum direct or indirect interest ownership of voting or other equity securities         50.00%              
Affiliated Entity | Apache | Construction, Operations and Maintenance Agreement | Scenario, Forecast                        
Related Party Transaction [Line Items]                        
Expenses from transactions with related party $ 9,000,000.0   $ 7,000,000.0 $ 5,000,000.0                
Affiliated Entity | Apache | Lease Agreements                        
Related Party Transaction [Line Items]                        
Base rental charge         $ 44,500              
Lease expense         $ 1,100,000              
Lease expense           $ 100,000            
Initial term of lease agreement   4 years                    
Number of lease renewal term | contract   3                    
Lessee renewal term   24 months                    
Affiliated Entity | Apache | Purchase Rights and Restrictive Covenants Agreement                        
Related Party Transaction [Line Items]                        
Related party transaction agreement term, period after closing date         5 years              
Gas and oil area developed (in acres) | a         1.7     1.7 1.7      
Affiliated Entity | Kayne Anderson Sponsor LLC                        
Related Party Transaction [Line Items]                        
Debt maximum borrowing capacity                   $ 1,000,000.0 $ 500,000  
Kayne Anderson Sponsor LLC | Affiliated Entity | Administrative Services Agreement                        
Related Party Transaction [Line Items]                        
Expenses from transactions with related party               $ 5,000        
Altus Midstream LP | Kayne Anderson Sponsor LLC                        
Related Party Transaction [Line Items]                        
Ownership percentage                       10.00%
[1]
Includes amounts of $8.8 million, $9.1 million, and $4.7 million to related parties for the years ended December 31, 2019, 2018, and 2017, respectively. Refer to Note 3—Transactions with Affiliates.
[2]
Includes amounts of $5.4 million, $6.5 million, and $4.0 million to related parties for the years ended December 31, 2019, 2018, and 2017, respectively. Refer to Note 3—Transactions with Affiliates.