Guarantor Financial Statements - Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues:
Revenue	$ 526,273	$ 269,434	$ 1,006,468	$ 504,664
Lease bonus income	928	583	928	2,185
Other operating income	2,425	0	4,466	0
Costs and expenses:
Lease operating expenses	42,647	28,989	79,992	55,615
Production and ad valorem taxes	32,202	15,879	59,506	31,604
Depreciation, depletion and amortization	129,867	75,173	245,083	134,102
General and administrative expenses	14,529	11,892	30,854	25,636
Asset retirement obligation accretion	365	350	720	673
Other operating expense	946	0	1,476	0
Total costs and expenses	244,970	137,126	457,519	255,946
Operating Income (Loss)	281,303	132,308	548,949	248,718
Other income (expense):
Interest expense, net	(17,096)	(8,245)	(30,797)	(20,470)
Other income, net	84,472	8,324	87,208	9,469
Gain (loss) on derivative instruments, net	(58,587)	33,320	(90,932)	71,021
Gain on revaluation of investment	4,465	0	5,364	0
Total other income (expense), net	13,254	33,399	(29,157)	60,020
Income (loss) before income taxes	294,557	165,707	519,792	308,738
Provision for income taxes	(6,607)	1,579	40,474	3,536
Net income	301,164	164,128	479,318	305,202
Net income attributable to non-controlling interest	82,018	5,723	97,360	10,524
Net income (loss) attributable to Diamondback Energy, Inc.	219,146	158,405	381,958	294,678
Eliminations [Member]
Revenues:
Revenue	0	(106)	0	(106)
Lease bonus income	0	(106)	0	(106)
Other operating income	0		0
Costs and expenses:
Lease operating expenses	0	0	0	0
Production and ad valorem taxes	0	0	0	0
Depreciation, depletion and amortization	4,627	410	8,102	601
General and administrative expenses	(615)	(615)	(1,230)	(1,230)
Asset retirement obligation accretion	0	0	0	0
Other operating expense	0		0
Total costs and expenses	4,012	(205)	6,872	(629)
Operating Income (Loss)	(4,012)	99	(6,872)	523
Other income (expense):
Interest expense, net	0	0	0	0
Other income, net	(615)	(615)	(1,230)	(1,230)
Gain (loss) on derivative instruments, net	0	0	0	0
Gain on revaluation of investment	0		0
Total other income (expense), net	(615)	(615)	(1,230)	(1,230)
Income (loss) before income taxes	(4,627)	(516)	(8,102)	(707)
Provision for income taxes	0	0	0	0
Net income	(4,627)	(516)	(8,102)	(707)
Net income attributable to non-controlling interest	52,958	5,723	68,300	10,524
Net income (loss) attributable to Diamondback Energy, Inc.	(57,585)	(6,239)	(76,402)	(11,231)
Parent Company [Member] | Reportable Legal Entities [Member]
Revenues:
Revenue	0	0	0	0
Lease bonus income	0	0	0	0
Other operating income	0		0
Costs and expenses:
Lease operating expenses	0	0	0	0
Production and ad valorem taxes	0	0	0	0
Depreciation, depletion and amortization	0	0	0	0
General and administrative expenses	6,539	6,432	14,029	13,540
Asset retirement obligation accretion	0	0	0	0
Other operating expense	0		0
Total costs and expenses	6,539	6,432	14,029	13,540
Operating Income (Loss)	(6,539)	(6,432)	(14,029)	(13,540)
Other income (expense):
Interest expense, net	(10,145)	(6,325)	(19,077)	(17,133)
Other income, net	211	0	334	1,092
Gain (loss) on derivative instruments, net	0	0	0	0
Gain on revaluation of investment	0		0
Total other income (expense), net	(9,934)	(6,325)	(18,743)	(16,041)
Income (loss) before income taxes	(16,473)	(12,757)	(32,772)	(29,581)
Provision for income taxes	65,271	1,579	112,352	3,536
Net income	(81,744)	(14,336)	(145,124)	(33,117)
Net income attributable to non-controlling interest	0	0	0	0
Net income (loss) attributable to Diamondback Energy, Inc.	(81,744)	(14,336)	(145,124)	(33,117)
Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Revenues:
Revenue	450,867	232,918	868,619	434,496
Lease bonus income	0	0	0	0
Other operating income	2,367		4,358
Costs and expenses:
Lease operating expenses	42,647	28,989	79,992	55,615
Production and ad valorem taxes	27,335	13,106	50,400	26,761
Depreciation, depletion and amortization	111,980	65,091	212,196	115,982
General and administrative expenses	6,395	4,521	13,134	9,630
Asset retirement obligation accretion	365	350	720	673
Other operating expense	946		1,476
Total costs and expenses	213,939	116,756	397,398	216,690
Operating Income (Loss)	236,928	116,162	471,221	217,806
Other income (expense):
Interest expense, net	(3,699)	(1,277)	(6,370)	(2,082)
Other income, net	84,429	8,626	87,265	9,480
Gain (loss) on derivative instruments, net	(58,587)	33,320	(90,932)	71,021
Gain on revaluation of investment	0		0
Total other income (expense), net	22,143	40,669	(10,037)	78,419
Income (loss) before income taxes	259,071	156,831	461,184	296,225
Provision for income taxes	0	0	0	0
Net income	259,071	156,831	461,184	296,225
Net income attributable to non-controlling interest	0	0	0	0
Net income (loss) attributable to Diamondback Energy, Inc.	259,071	156,831	461,184	296,225
Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Revenues:
Revenue	75,406	36,622	137,849	70,274
Lease bonus income	928	689	928	2,291
Other operating income	58		108
Costs and expenses:
Lease operating expenses	0	0	0	0
Production and ad valorem taxes	4,867	2,773	9,106	4,843
Depreciation, depletion and amortization	13,260	9,672	24,785	17,519
General and administrative expenses	2,210	1,554	4,921	3,696
Asset retirement obligation accretion	0	0	0	0
Other operating expense	0		0
Total costs and expenses	20,480	14,143	39,220	26,345
Operating Income (Loss)	54,926	22,479	98,629	43,929
Other income (expense):
Interest expense, net	(3,252)	(643)	(5,350)	(1,255)
Other income, net	447	313	839	127
Gain (loss) on derivative instruments, net	0	0	0	0
Gain on revaluation of investment	4,465		5,364
Total other income (expense), net	1,660	(330)	853	(1,128)
Income (loss) before income taxes	56,586	22,149	99,482	42,801
Provision for income taxes	(71,878)	0	(71,878)	0
Net income	128,464	22,149	171,360	42,801
Net income attributable to non-controlling interest	29,060	0	29,060	0
Net income (loss) attributable to Diamondback Energy, Inc.	99,404	22,149	142,300	42,801
Oil sales
Revenues:
Revenue	460,437	237,884	879,705	444,958
Oil sales | Eliminations [Member]
Revenues:
Revenue	65,885	31,771	121,572	60,615
Oil sales | Parent Company [Member] | Reportable Legal Entities [Member]
Revenues:
Revenue	0	0	0	0
Oil sales | Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Revenues:
Revenue	394,552	206,113	758,133	384,343
Oil sales | Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Revenues:
Revenue	0	0	0	0
Natural gas sales
Revenues:
Revenue	11,365	12,693	25,743	22,615
Natural gas sales | Eliminations [Member]
Revenues:
Revenue	2,651	1,954	5,229	3,301
Natural gas sales | Parent Company [Member] | Reportable Legal Entities [Member]
Revenues:
Revenue	0	0	0	0
Natural gas sales | Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Revenues:
Revenue	8,714	10,739	20,514	19,314
Natural gas sales | Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Revenues:
Revenue	0	0	0	0
Natural gas liquid sales
Revenues:
Revenue	43,135	16,857	76,248	32,359
Natural gas liquid sales | Eliminations [Member]
Revenues:
Revenue	5,884	2,208	10,012	4,067
Natural gas liquid sales | Parent Company [Member] | Reportable Legal Entities [Member]
Revenues:
Revenue	0	0	0	0
Natural gas liquid sales | Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Revenues:
Revenue	37,251	14,649	66,236	28,292
Natural gas liquid sales | Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Revenues:
Revenue	0	0	0	0
Royalty [Member]
Revenues:
Revenue	0	0	0	0
Royalty [Member] | Eliminations [Member]
Revenues:
Revenue	(74,420)	(35,933)	(136,813)	(67,983)
Royalty [Member] | Parent Company [Member] | Reportable Legal Entities [Member]
Revenues:
Revenue	0	0	0	0
Royalty [Member] | Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Revenues:
Revenue	0	0	0	0
Royalty [Member] | Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Revenues:
Revenue	74,420	35,933	136,813	67,983
Midstream services
Revenues:
Revenue	7,983	1,417	19,378	2,547
Costs and expenses:
Cost of Goods and Services Sold	17,601	1,828	28,790	2,682
Midstream services | Eliminations [Member]
Revenues:
Revenue	0	0	0	0
Costs and expenses:
Cost of Goods and Services Sold	0	0	0	0
Midstream services | Parent Company [Member] | Reportable Legal Entities [Member]
Revenues:
Revenue	0	0	0	0
Costs and expenses:
Cost of Goods and Services Sold	0	0	0	0
Midstream services | Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Revenues:
Revenue	7,983	1,417	19,378	2,547
Costs and expenses:
Cost of Goods and Services Sold	17,601	1,828	28,790	2,682
Midstream services | Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Revenues:
Revenue	0	0	0	0
Costs and expenses:
Cost of Goods and Services Sold	0	0	0	0
Gathering and Transportation [Member]
Costs and expenses:
Cost of Goods and Services Sold	6,813	3,015	11,098	5,634
Gathering and Transportation [Member] | Eliminations [Member]
Costs and expenses:
Cost of Goods and Services Sold	0	0	0	0
Gathering and Transportation [Member] | Parent Company [Member] | Reportable Legal Entities [Member]
Costs and expenses:
Cost of Goods and Services Sold	0	0	0	0
Gathering and Transportation [Member] | Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Costs and expenses:
Cost of Goods and Services Sold	6,670	2,871	10,690	5,347
Gathering and Transportation [Member] | Non-Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Costs and expenses:
Cost of Goods and Services Sold	$ 143	$ 144	$ 408	$ 287