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UNITHOLDERS’ EQUITY AND DISTRIBUTIONS - Narrative (Details) - USD ($)	3 Months Ended			6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Jul. 30, 2021	Dec. 31, 2020	Nov. 06, 2020
Limited Partners' Capital Account [Line Items]
Stock repurchased	$ 6,779,000	$ 13,043,000
Cash Distribution
Limited Partners' Capital Account [Line Items]
Cash distributions, period after end of each quarter				60 days
Limited Partner
Limited Partners' Capital Account [Line Items]
Changes in ownership	$ 6,276,000		$ 0	$ 5,943,000	$ 0
Viper Energy Partners LP \| Diamondback Energy, Inc.
Limited Partners' Capital Account [Line Items]
Percent of limited partnership interest				59.00%
Ownership percentage by noncontrolling owners	58.00%			58.00%
Common Units
Limited Partners' Capital Account [Line Items]
Limited partners' capital account, units issued (in shares)	64,546,377			64,546,377			65,817,281
Limited partners' capital account, units outstanding (in shares)	64,546,377			64,546,377			65,817,281
Authorized amount								$ 100,000,000.0
Stock repurchased	$ 6,800,000			$ 19,800,000
Remaining authorized repurchase amount	$ 56,200,000			$ 56,200,000
Common Units \| Diamondback Energy, Inc.
Limited Partners' Capital Account [Line Items]
Limited partners' capital account, units outstanding (in shares)	731,500			731,500
Class B Units
Limited Partners' Capital Account [Line Items]
Limited partners' capital account, units issued (in shares)	90,709,946			90,709,946			90,709,946
Limited partners' capital account, units outstanding (in shares)	90,709,946			90,709,946		90,709,946	90,709,946
Class B Units \| Diamondback Energy, Inc.
Limited Partners' Capital Account [Line Items]
Limited partners' capital account, units outstanding (in shares)	90,709,946			90,709,946
Operating Company Units \| Diamondback Energy, Inc.
Limited Partners' Capital Account [Line Items]
Limited partners' capital account, units outstanding (in shares)	90,709,946			90,709,946