Condensed Consolidated Statements of Changes in Unitholders’ Equity (Unaudited) - USD ($) shares in Thousands	Total	Limited Partners	General Partner	Limited Partners Member's Equity Limited Partners	Common Units Limited Partners	Class B Units Limited Partners	Non-Controlling Interest	Accumulated Other Comprehensive Income	Non-Controlling Interest-Accumulated Other Comprehensive Income
Beginning balance at Dec. 31, 2018	$ 527,126,000		$ 0	$ 527,125,000	$ 0	$ 1,000	$ 0
Beginning balance (in shares) at Dec. 31, 2018					0	0
Increase (Decrease) in Partners' Capital [Roll Forward]
Contributions from Diamondback	458,674,000			458,674,000
Net income (loss)	39,356,000			39,356,000
Ending balance at Mar. 31, 2019	1,025,156,000		0	1,025,155,000	$ 0	$ 1,000	0
Ending balance (in shares) at Mar. 31, 2019					0	0
Beginning balance at Dec. 31, 2018	527,126,000		0	527,125,000	$ 0	$ 1,000	0
Beginning balance (in shares) at Dec. 31, 2018					0	0
Increase (Decrease) in Partners' Capital [Roll Forward]
Less: Net income (loss) before initial public offering	65,995,000
Other comprehensive income (loss)	0
Net income (loss) subsequent to initial public offering	68,120,000
Net income (loss)	134,115,000
Ending balance at Sep. 30, 2019	1,115,148,000		1,000,000	0	$ 738,699,000	$ 1,000,000	374,449,000
Ending balance (in shares) at Sep. 30, 2019					43,700	107,815
Beginning balance at Mar. 31, 2019	1,025,156,000		0	1,025,155,000	$ 0	$ 1,000	0
Beginning balance (in shares) at Mar. 31, 2019					0	0
Increase (Decrease) in Partners' Capital [Roll Forward]
Less: Net income (loss) before initial public offering	26,639,000			26,639,000
Distributions	(33,712,000)			(33,712,000)
Ending balance at May. 28, 2019	1,018,083,000		0	1,018,082,000	$ 0	$ 1,000	0
Ending balance (in shares) at May. 28, 2019					0	0
Increase (Decrease) in Partners' Capital [Roll Forward]
Net proceeds from the offering - public	719,627,000				$ 719,627,000
Net proceeds from the offering - public (in shares)					43,700
Net proceeds from the offering - General Partner	1,000,000		1,000,000
Net proceeds from the offering - Diamondback	999,000					$ 999,000
Net proceeds from the offering - Diamondback (in shares)						107,815
Unit-based compensation	831,000				$ 831,000
Elimination of current and deferred tax liabilities	31,094,000			31,094,000
Allocation of net investment to unitholder	0			(322,663,000)			322,663,000
Distributions to Diamondback	(726,513,000)			(726,513,000)
Net income (loss) subsequent to initial public offering	20,040,000				4,803,000		15,237,000
Change in ownership of consolidated subsidiaries		$ 0
Ending balance at Jun. 30, 2019	1,065,161,000		1,000,000	0	$ 725,261,000	$ 1,000,000	337,900,000
Ending balance (in shares) at Jun. 30, 2019					43,700	107,815
Increase (Decrease) in Partners' Capital [Roll Forward]
Less: Net income (loss) before initial public offering	0
Net proceeds from the offering - public	(251,000)				$ (251,000)
Net proceeds from the offering - public (in shares)					0
Unit-based compensation	2,158,000				$ 2,158,000
Other comprehensive income (loss)	0
Net income (loss) subsequent to initial public offering	0
Net income (loss)	48,080,000				11,531,000		36,549,000
Ending balance at Sep. 30, 2019	1,115,148,000		1,000,000	$ 0	$ 738,699,000	$ 1,000,000	374,449,000
Ending balance (in shares) at Sep. 30, 2019					43,700	107,815
Beginning balance at Dec. 31, 2019	1,115,840,000		979,000		$ 737,777,000	$ 979,000	376,928,000	$ (198,000)	$ (625,000)
Beginning balance (in shares) at Dec. 31, 2019					43,700	107,815
Increase (Decrease) in Partners' Capital [Roll Forward]
Unit-based compensation	2,219,000				$ 2,219,000
Distribution equivalent rights payments	(652,000)				(652,000)
Other comprehensive income (loss)	(258,000)							(63,000)	(195,000)
Distributions	(43,979,000)		(20,000)		(12,673,000)	$ (20,000)	(31,266,000)
Net income (loss)	54,588,000				13,031,000		41,557,000
Ending balance at Mar. 31, 2020	1,127,758,000		959,000		$ 739,702,000	$ 959,000	387,219,000	(261,000)	(820,000)
Ending balance (in shares) at Mar. 31, 2020					43,700	107,815
Beginning balance at Dec. 31, 2019	1,115,840,000		979,000		$ 737,777,000	$ 979,000	376,928,000	(198,000)	(625,000)
Beginning balance (in shares) at Dec. 31, 2019					43,700	107,815
Increase (Decrease) in Partners' Capital [Roll Forward]
Less: Net income (loss) before initial public offering	0
Other comprehensive income (loss)	(95,000)
Net income (loss) subsequent to initial public offering	0
Change in ownership of consolidated subsidiaries		(329,034,000)
Net income (loss)	105,846,000
Ending balance at Sep. 30, 2020	1,183,550,000		919,000		$ 399,080,000	$ 919,000	783,550,000	(223,000)	(695,000)
Ending balance (in shares) at Sep. 30, 2020					43,996	107,815
Beginning balance at Mar. 31, 2020	1,127,758,000		959,000		$ 739,702,000	$ 959,000	387,219,000	(261,000)	(820,000)
Beginning balance (in shares) at Mar. 31, 2020					43,700	107,815
Increase (Decrease) in Partners' Capital [Roll Forward]
Unit-based compensation	2,120,000				$ 2,120,000
Unit-based compensation (in shares)					450
Distribution equivalent rights payments	(644,000)				$ (644,000)
Other comprehensive income (loss)	(240,000)							(59,000)	(181,000)
Distributions	(43,980,000)		(20,000)		(12,673,000)	$ (20,000)	(31,267,000)
Change in ownership of consolidated subsidiaries	90,613,000				(329,034,000)		419,647,000
Units repurchased for tax withholding	(1,365,000)				$ (1,365,000)
Units repurchased for tax withholding (in shares)					(154)
Net income (loss)	12,462,000				$ 2,822,000		9,640,000
Ending balance at Jun. 30, 2020	1,186,724,000		939,000		$ 400,928,000	$ 939,000	785,239,000	(320,000)	(1,001,000)
Ending balance (in shares) at Jun. 30, 2020					43,996	107,815
Increase (Decrease) in Partners' Capital [Roll Forward]
Less: Net income (loss) before initial public offering	0
Unit-based compensation	2,216,000				$ 2,216,000
Unit-based compensation (in shares)					0
Distribution equivalent rights payments	(524,000)				$ (524,000)
Other comprehensive income (loss)	403,000							97,000	306,000
Distributions	(44,065,000)		(20,000)		(12,758,000)	$ (20,000)	(31,267,000)
Net income (loss) subsequent to initial public offering	0
Change in ownership of consolidated subsidiaries		$ 0
Net income (loss)	38,796,000				9,218,000		29,578,000
Ending balance at Sep. 30, 2020	$ 1,183,550,000		$ 919,000		$ 399,080,000	$ 919,000	$ 783,550,000	$ (223,000)	$ (695,000)
Ending balance (in shares) at Sep. 30, 2020					43,996	107,815