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Condensed Consolidating Financial Information - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Condensed Financial Statements, Captions [Line Items]
Ownership percentage, guarantors (as percent)			100.00%
Investments in and advances to subsidiaries	$ 0		$ 0		$ 0
Oasis share of stockholders’ equity	3,705,326		3,705,326		3,734,576
Non-controlling interests	194,335		194,335		184,304
Equity in earnings of subsidiaries	0	$ 0	0	$ 0
Net income attributable to non-controlling interest	10,023	3,882	25,344	10,907
Distributions to non-controlling interests			15,551	10,393
Intercompany Eliminations
Condensed Financial Statements, Captions [Line Items]
Investments in and advances to subsidiaries	(5,314,062)		(5,314,062)		(5,256,567)
Oasis share of stockholders’ equity	(5,213,479)		(5,213,479)		(5,139,158)
Non-controlling interests	(119,446)		(119,446)		(128,511)
Equity in earnings of subsidiaries	(97,072)	(129,657)	(153,688)	58,606
Net income attributable to non-controlling interest	(13,843)	(22,577)	(43,155)	(62,168)
Distributions to non-controlling interests			(54,116)	(92,672)
Intercompany Eliminations | (Overstated) / understated
Condensed Financial Statements, Captions [Line Items]
Investments in and advances to subsidiaries					20,700
Oasis share of stockholders’ equity					(163,600)
Non-controlling interests					184,300
Equity in earnings of subsidiaries		5,700		17,200
Net income attributable to non-controlling interest		3,900		10,900
Distributions to non-controlling interests				92,700
Parent/ Issuer
Condensed Financial Statements, Captions [Line Items]
Investments in and advances to subsidiaries	4,941,278		4,941,278		4,900,528
Oasis share of stockholders’ equity	3,705,325		3,705,325		3,734,576
Non-controlling interests	0		0		0
Equity in earnings of subsidiaries	54,755	96,555	39,118	(149,295)
Net income attributable to non-controlling interest	0	0	0	0
Distributions to non-controlling interests			0	0
Parent/ Issuer | (Overstated) / understated
Condensed Financial Statements, Captions [Line Items]
Investments in and advances to subsidiaries					(9,600)
Oasis share of stockholders’ equity					(9,600)
Combined Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Investments in and advances to subsidiaries	372,784		372,784		356,039
Oasis share of stockholders’ equity	4,941,278		4,941,278		4,900,528
Non-controlling interests	0		0		0
Equity in earnings of subsidiaries	42,317	33,102	114,570	90,689
Net income attributable to non-controlling interest	$ 0	0	0	0
Distributions to non-controlling interests			$ 0	0
Combined Guarantor Subsidiaries | (Overstated) / understated
Condensed Financial Statements, Captions [Line Items]
Investments in and advances to subsidiaries					(11,100)
Oasis share of stockholders’ equity					173,200
Non-controlling interests					$ (184,300)
Equity in earnings of subsidiaries		(5,700)		(17,200)
Net income attributable to non-controlling interest		$ (3,900)		(10,900)
Distributions to non-controlling interests				$ (92,700)

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).

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