SERIES A CUMULATIVE REDEEMABLE PREFERRED UNITS - Activity Related to Preferred Units (Details) - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Jun. 12, 2019	May 08, 2019
Financial Position
Beginning balance		$ 575,100
Accreted redemption value adjustment		81,975
Ending balance		769,900	$ 575,100
Embedded derivative liability		56,895	$ 139,009	$ 94,459
Redeemable noncontrolling interest, including embedded derivative liability		$ 769,371
Preferred Units, redemption terms, internal rate of return		11.50%
Preferred Units, redemption terms, multiple of invested capital		1.3
Preferred Units, redemption price		$ 738,700
Preferred Unit limited partners
Units Outstanding
Redeemable noncontrolling interest - Preferred Units: beginning of period (in shares)		660,694	638,163
Distribution of in-kind additional Preferred Units (in shares)			22,531
Redeemable noncontrolling interest - Preferred Units: end of period (in shares)		660,694	660,694
Financial Position
Beginning balance	[1]	$ 608,381	$ 555,599
Cash distributions paid to Preferred Unit limited partners	[1]	(46,249)	(23,124)
Distributions payable to Preferred Unit limited partners	[1]	(11,562)
Allocation of Altus Midstream net income		79,931	75,906
Ending balance	[1]	$ 712,476	$ 608,381
Preferred Units, redemption terms, internal rate of return					11.50%
Preferred Units, redemption terms, multiple of invested capital					1.3

[1] Certain redemption features embedded within the Preferred Unit purchase agreement require bifurcation and measurement at fair value. For further detail, refer to Note 11—Series A Cumulative Redeemable Preferred Units.