EQUITY (Details) $ / shares in Units, $ in Thousands		1 Months Ended		3 Months Ended
	Jun. 30, 2020	Dec. 31, 2020 USD ($) $ / shares		Mar. 31, 2021 USD ($)	Mar. 31, 2020 USD ($)	[2]	Nov. 09, 2018 shares
Class of Stock [Line Items]
Redemption value measurement period				5 days
Redeemable noncontrolling interest — Apache limited partner		$ 575,125	[1]	$ 662,432
Payments of common stock dividend				$ 5,620	$ 0
Capital distribution (in USD per share) | $ / shares		$ 1.50
Class A Common Stock
Class of Stock [Line Items]
Stock split, conversion ratio	0.05
Common stock, redemption ratio				1
Dividends declared (in USD per share) | $ / shares		$ 1.50
Payments of common stock dividend				$ 5,600
Class C Common Stock
Class of Stock [Line Items]
Stock split, conversion ratio	0.05
Apache | Class A Common Stock
Class of Stock [Line Items]
Proceeds from noncontrolling interests		$ 500
Altus Midstream LP | Apache
Class of Stock [Line Items]
Number of common units received (in shares) | shares							12,500,000
Limited partners, ownership interest				76.90%
Altus Midstream LP | Apache | Class A Common Stock
Class of Stock [Line Items]
Ownership percentage by noncontrolling owners				9.80%

[1] The Consolidated Balance Sheet as of December 31, 2020 has been derived from the audited consolidated financial statements, revised to reflect the Company’s fair value change of its underlying warrants. Refer to Note 1—Summary of Significant Accounting Policies, see the section titled Revision of Previously Issued Consolidated Financial Statements for Immaterial Adjustment for further information.

[2] This period presented has been revised to reflect the Company’s fair value change of its underlying warrants. Refer to Note 1—Summary of Significant Accounting Policies, see the section titled Revision of Previously Issued Consolidated Financial Statements for Immaterial Adjustment for further information.