Segment Information - Summary of Results of Operations by Segment (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Segment Reporting Information [Line Items]
Net revenues		$ 1,612,331	$ 1,109,822	$ 4,617,272	$ 3,165,864
Adjusted Property EBITDA	[1]	472,956	305,435	1,330,506	918,383
Other operating costs and expenses
Pre-opening		6,908	70,778	19,445	150,496
Depreciation and amortization		137,982	106,467	415,488	264,187
Property charges and other		28,293	18,514	38,494	31,366
Corporate expenses and other		31,943	24,697	73,643	60,694
Stock-based compensation		10,503	8,048	29,290	28,856
Equity in income from unconsolidated affiliates		0	0	0	16
Total other operating expenses		215,629	228,504	576,360	535,615
Operating income		257,327	76,931	754,146	382,768
Non-operating income and expenses
Interest income		8,447	3,678	21,998	9,940
Interest expense, net of amounts capitalized		(95,874)	(79,669)	(291,875)	(193,698)
Change in interest rate swap fair value		(2)	1,168	(1,056)	(1,693)
Change in Redemption Note fair value		(41,718)	(22,218)	(69,982)	(19,239)
Loss on extinguishment of debt		(20,774)	0	(43,061)	0
Equity in income from unconsolidated affiliates		0	0	0	16
Other		(1,894)	899	(19,840)	(1,046)
Total other non-operating income and expenses		(151,815)	(96,142)	(403,816)	(205,720)
Income (loss) before income taxes		105,512	(19,211)	350,330	177,048
Benefit (provision) for income taxes		457	(120)	(5,040)	(1,145)
Net income (loss)		105,969	(19,331)	345,290	175,903
Net Income (Loss) Attributable to Noncontrolling Interest		(26,202)	1,894	(89,791)	(47,728)
Net income (loss) attributable to Wynn Resorts, Limited		79,767	(17,437)	255,499	128,175
Wynn Macau
Segment Reporting Information [Line Items]
Net revenues		597,422	518,094	1,867,163	1,765,652
Adjusted Property EBITDA	[1]	183,219	151,009	574,723	532,643
Wynn Palace
Segment Reporting Information [Line Items]
Net revenues		555,322	164,625	1,445,747	164,625
Adjusted Property EBITDA	[1]	138,228	25,547	337,487	25,547
Macau Operations [Domain]
Segment Reporting Information [Line Items]
Net revenues		1,152,744	682,719	3,312,910	1,930,277
Adjusted Property EBITDA		321,447	176,556	912,210	558,190
Las Vegas
Segment Reporting Information [Line Items]
Net revenues		459,587	427,103	1,304,362	1,235,587
Adjusted Property EBITDA	[1]	$ 151,509	$ 128,879	$ 418,296	$ 360,193

[1] "Adjusted Property EBITDA" is net income (loss) before interest, taxes, depreciation and amortization, pre-opening expenses, property charges and other, management and license fees, corporate expenses and other (including intercompany golf course and water rights leases), stock-based compensation, loss on extinguishment of debt, change in interest rate swap fair value, change in Redemption Note fair value and other non-operating income and expenses, and includes equity in income from unconsolidated affiliates. Adjusted Property EBITDA is presented exclusively as a supplemental disclosure because management believes that it is widely used to measure the performance, and as a basis for valuation, of gaming companies. Management uses Adjusted Property EBITDA as a measure of the operating performance of its segments and to compare the operating performance of its properties with those of its competitors, as well as a basis for determining certain incentive compensation. The Company also presents Adjusted Property EBITDA because it is used by some investors as a way to measure a company's ability to incur and service debt, make capital expenditures and meet working capital requirements. Gaming companies have historically reported EBITDA as a supplement to financial measures in accordance with GAAP. In order to view the operations of their casinos on a more stand-alone basis, gaming companies, including Wynn Resorts, have historically excluded from their EBITDA calculations pre-opening expenses, property charges, corporate expenses and stock-based compensation that do not relate to the management of specific casino properties. However, Adjusted Property EBITDA should not be considered as an alternative to operating income as an indicator of the Company's performance, as an alternative to cash flows from operating activities as a measure of liquidity, or as an alternative to any other measure determined in accordance with GAAP. Unlike measures of net income, Adjusted Property EBITDA does not include depreciation or interest expense and therefore does not reflect current or future capital expenditures or the cost of capital. The Company has significant uses of cash flows, including capital expenditures, interest payments, debt principal repayments, taxes and other non-recurring charges, which are not reflected in Adjusted Property EBITDA. Also, Wynn Resorts' calculation of Adjusted Property EBITDA may be different from the calculation methods used by other companies and, therefore, comparability may be limited.