ACQUISITIONS AND DIVESTITURES  - Schedule Of Acquisition Consideration Paid (Details) - QEP Resources Inc $ / shares in Units, shares in Thousands, $ in Millions	Mar. 17, 2021 USD ($) $ / shares shares
Business Acquisition [Line Items]
Eligible shares of QEP common stock to be converted into shares of Diamondback common stock (in shares)	238,153
Shares of QEP equity awards included in precombination consideration (in shares)	4,221
Total shares of QEP common stock eligible for merger consideration (in shares)	242,374
Exchange ratio	0.050
Additional shares of Diamondback common stock to be issued as merger consideration (in shares)	12,119
Business acquisition, share price (in USD per share) | $ / shares	$ 81.41
Total consideration | $	$ 987