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Viper Energy Partners LP (Details) - USD ($)			1 Months Ended							2 Months Ended		12 Months Ended
Viper Energy Partners LP (Details) - USD ($)	Sep. 19, 2014	Jun. 23, 2014	Jul. 31, 2018	Jul. 31, 2017	Jan. 31, 2017	Dec. 31, 2016	Aug. 31, 2016	Jul. 31, 2016	Jan. 31, 2016	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	May 10, 2018	Aug. 01, 2016
Noncontrolling Interest [Line Items]
Interest in Viper Energy Partners LP				64.00%
Exchange of membership interests for common units											731,500
Limited Partners' Capital Account, Distribution Amount											$ 10,000
Repayment under credit facility												$ 1,241,500,000	$ 383,500,000	$ 89,000,000
Noncontrolling Interest, Period Increase (Decrease)												160,100,000
General Partners' Contributed Capital															$ 1,000,000
Limited Partners' Contributed Capital															$ 1,000,000
Limited partners capital account, percentage of distribution															8.00%
Number of Class B Units Converted											731,500
State												$ (999,000)	999,000	$ 192,000
Follow-on Public Offering [Member]
Noncontrolling Interest [Line Items]
Proceeds from sale of common units, net of offering expenses and underwriting discounts and commissions						$ 1,150,828,000		$ 551,777,000	$ 254,518,000
Viper Energy Partners LP [Member]
Noncontrolling Interest [Line Items]
Interest in Viper Energy Partners LP	88.00%	92.00%										59.00%
Viper Energy Partners LP [Member] \| IPO [Member]
Noncontrolling Interest [Line Items]
Units issued by Viper Energy Partners LP		5,750,000
Noncontrolling owners' interest in Viper Energy Partners LP		8.00%
Price per common unit (in dollars per unit)		$ 26.00
Viper Energy Partners LP [Member] \| Follow-on Public Offering [Member]
Noncontrolling Interest [Line Items]
Interest in Viper Energy Partners LP																83.00%
Units issued by Viper Energy Partners LP	3,500,000		10,080,000	16,100,000	9,775,000		8,050,000
Price per common unit (in dollars per unit)																$ 15.6
Proceeds from sale of common units, net of offering expenses and underwriting discounts and commissions			$ 303,100,000	$ 232,500,000	$ 147,500,000		$ 125,000,000
Repayment under credit facility				$ 152,800,000	$ 120,500,000
Long-term Debt, Gross			$ 361,500,000
Viper Energy Partners LP [Member] \| Over-Allotment Option [Member]
Noncontrolling Interest [Line Items]
Units issued by Viper Energy Partners LP			1,080,000	2,100,000	1,275,000		1,050,000
Viper Energy Partners LP [Member] \| Diamondback Energy, Inc. [Member]
Noncontrolling Interest [Line Items]
Exchange of membership interests for common units		70,450,000
Distribution Made to Limited Partner, Cash Distributions Paid												$ 155,100,000
Parent Company [Member]
Noncontrolling Interest [Line Items]
Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest			59.00%								64.00%
Units of Partnership Interest, Amount															73,150,000
Class B Units Outstanding															73,150,000
Limited Partner [Member] \| Viper Energy Partners LP [Member] \| Diamondback Energy, Inc. [Member]
Noncontrolling Interest [Line Items]
Units issued by Viper Energy Partners LP							2,000,000
General Partner [Member]
Noncontrolling Interest [Line Items]
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest										41.00%	36.00%
Partnership Credit Facility [Member]
Noncontrolling Interest [Line Items]
Long-term Debt, Gross												411,000,000	93,500,000
Diamondback Energy, Inc. [Member] \| Viper Energy Partners LP [Member] \| Over-Allotment Option [Member]
Noncontrolling Interest [Line Items]
Units issued by Viper Energy Partners LP				700,000
Viper Energy Partners LP [Member] \| Tax Sharing Agreement [Member]
Noncontrolling Interest [Line Items]
State												151,000
Affiliated Entity [Member] \| Viper Energy Partners LP [Member] \| Over-Allotment Option [Member]
Noncontrolling Interest [Line Items]
Units issued by Viper Energy Partners LP				3,000,000
Executive Officer [Member] \| Viper Energy Partners LP [Member] \| Over-Allotment Option [Member]
Noncontrolling Interest [Line Items]
Units issued by Viper Energy Partners LP				114,000
General Partner [Member] \| Partnership Agreement [Member]
Noncontrolling Interest [Line Items]
Revenue from Related Parties												$ 2,460,000	$ 2,460,000