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EQUITY METHOD INVESTMENTS - Narrative (Details)		12 Months Ended
EQUITY METHOD INVESTMENTS - Narrative (Details)	Jun. 30, 2018 PWD_well	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 20, 2019 Mcf / d mi	Nov. 07, 2019	Oct. 01, 2019	Jul. 30, 2019	Mar. 29, 2019 USD ($)	Feb. 15, 2019	Feb. 01, 2019	Oct. 31, 2014
Schedule of Equity Method Investments
Equity method investment impairment		$ 0	$ 0	$ 0
Investment capitalized interest		1,000,000
HMW Fluid Management LLC
Schedule of Equity Method Investments
Ownership interest												25.00%
Rattler LLC \| Epic Pipeline
Schedule of Equity Method Investments
Ownership interest											10.00%
Rattler LLC \| Gray Oak Pipeline
Schedule of Equity Method Investments
Ownership interest										10.00%
Rattler LLC \| OMOG JV LLC
Schedule of Equity Method Investments
Ownership interest							60.00%
Rattler LLC \| Amarillo Rattler, LLC
Schedule of Equity Method Investments
Ownership interest					50.00%
OMOG JV LLC \| Reliance Gathering LLC
Schedule of Equity Method Investments
Percentage acquired						100.00%
2.52% Short-Term Promissory Note \| Rattler LLC \| Gray Oak Pipeline
Schedule of Equity Method Investments
Equity method investment promissory note									$ 123,000,000
Stated interest rate									2.52%
Repayments of short-term debt		$ 23,000,000
Joint Venture Of Wink To Webster Project \| Rattler LLC
Schedule of Equity Method Investments
Noncontrolling interest, ownership percentage								4.00%
PWD Wells \| Rattler MIdstream LP \| HMW Fluid Management LLC
Schedule of Equity Method Investments
Ownership percentage of oil and gas property	50.00%
Oil and gas properties, number of units \| PWD_well	2
PWD Wells \| HMW Fluid Management LLC
Schedule of Equity Method Investments
Oil and gas properties, number of units \| PWD_well	4
Dawson, Martin and Andrews Counties, Texas \| Amarillo Rattler, LLC
Schedule of Equity Method Investments
Gas gathering and cryogenic processing system capacity (in Mcf/d) \| Mcf / d					40,000
Distance of gathering and regional transportation pipelines (over) (in miles) \| mi					84
Martin County, Texas \| Amarillo Rattler, LLC
Schedule of Equity Method Investments
Gas gathering and cryogenic processing system capacity (in Mcf/d) \| Mcf / d					60,000