REVENUE RECOGNITION - Disaggregation of Revenue (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Total operating revenues	[1]	$ 335,572	$ 135,766	$ 592,821	$ 283,869
Gathering and processing services
Disaggregation of Revenue [Line Items]
Total operating revenues		102,080	62,242	182,525	129,904
Natural gas, NGLs and condensate sales
Disaggregation of Revenue [Line Items]
Total operating revenues		229,651	71,099	404,579	151,092
Other revenue
Disaggregation of Revenue [Line Items]
Total operating revenues	[1]	$ 3,841	$ 2,425	$ 5,717	$ 2,873

[1] The results of the legacy ALTM business are not included in the Company’s consolidated financials prior to February 22, 2022. Refer to the Form 10-Q basis of presentation in Note 1—Description of the Organization and Summary of Significant Accounting Policies in the Notes to our Condensed Consolidated Financial Statements in this Form 10-Q for further information.