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Basis of Presentation and Significant Accounting Policies - Additional Information (Detail)		1 Months Ended	12 Months Ended
	Feb. 18, 2012 USD ($) shares	Feb. 18, 2012 USD ($) shares	Dec. 31, 2019 USD ($) ft²	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jan. 01, 2019 USD ($)	Jan. 01, 2018 USD ($)	Jan. 01, 2017 USD ($)
Summary of Significant Accounting Policies
Capitalized interest			$ 53,900,000	$ 57,300,000	$ 18,400,000
Amortization of debt issuance costs			28,954,000	36,917,000	25,013,000
Common shares redeemed and canceled (in shares) | shares		24,549,222
Gaming tax expenses			2,240,000,000	2,440,000,000	2,170,000,000
Total advertising costs			$ 61,300,000	$ 40,600,000	$ 37,800,000
Cumulative effect, change in accounting							$ 0	$ 111,000
Accumulated Other Comprehensive Income (Loss)
Summary of Significant Accounting Policies
Cumulative effect, change in accounting							(9,211,000)
Retained Earnings
Summary of Significant Accounting Policies
Cumulative effect, change in accounting							$ 9,211,000	$ (2,696,000)
Accounting Standards Update 2016-02
Summary of Significant Accounting Policies
Operating lease assets and liabilities						$ 154,100,000
Definite-lived intangible assets reclassified to operating lease assets						88,100,000
Property and equipment, net reclassified to operating lease assets						$ 206,900,000
Minimum
Summary of Significant Accounting Policies
Terms of lease contracts			5 years
Maximum
Summary of Significant Accounting Policies
Terms of lease contracts			10 years
Wynn Palace
Summary of Significant Accounting Policies
Square footage of non-cancelable operating leases | ft²			100,000
Wynn Macau
Summary of Significant Accounting Policies
Square footage of non-cancelable operating leases | ft²			59,000
Wynn Las Vegas
Summary of Significant Accounting Policies
Square footage of non-cancelable operating leases | ft²			140,000
Encore Boston Harbor
Summary of Significant Accounting Policies
Square footage of non-cancelable operating leases | ft²			35,500
Aruze USA, Inc.
Summary of Significant Accounting Policies
Common shares redeemed and canceled (in shares) | shares	24,549,222
Debt instrument, aggregate principal amount	$ 1,940,000,000	$ 1,940,000,000
Debt instrument, interest rate	2.00%	2.00%
Aruze USA, Inc. | Promissory Note | Redemption Price Promissory Note With Former Stockholder and Related Party, Due February 18, 2022; Interest At 2%
Summary of Significant Accounting Policies
Common shares redeemed and canceled (in shares) | shares	24,549,222
Debt instrument, aggregate principal amount	$ 1,940,000,000	$ 1,940,000,000
Debt instrument, interest rate	2.00%	2.00%
Debt instrument, fair value	$ 1,880,000,000	$ 1,880,000,000

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