Commitments and Contingencies - Additional Information (Detail) - USD ($)				1 Months Ended	12 Months Ended
	Sep. 17, 2018	Mar. 30, 2018	Feb. 18, 2012	Feb. 18, 2012	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Commitments and Contingencies
Contingent rental income						$ 52,347,000	$ 35,696,000
Rent expenses						27,100,000	18,300,000
2020					$ 396,723,000
2021					86,234,000
2022					45,277,000
2023					19,308,000
2024					13,697,000
Common stock redeemed, shares				24,549,222
Litigation settlement		$ 463,600,000			0	$ 463,557,000	$ 0
Damages sought	$ 1,000,000,000.0
Wynn Las Vegas | Meeting and Convention
Commitments and Contingencies
Guaranteed maximum construction price					$ 295,000,000
Aruze USA, Inc.
Commitments and Contingencies
Common stock redeemed, shares			24,549,222
Redemption price promissory note, principal amount			$ 1,940,000,000	$ 1,940,000,000
Debt instrument, interest rate			2.00%	2.00%
Minimum
Commitments and Contingencies
Term of employment agreement					3 years
Maximum
Commitments and Contingencies
Term of employment agreement					5 years
Employment Contracts
Commitments and Contingencies
2020					$ 70,000,000.0
2021					38,300,000
2022					13,400,000
2023					2,100,000
2024					700,000
Wynn America Credit Facilities | Wynn America | Revolving Credit Facility
Commitments and Contingencies
Letter of credit outstanding					$ 18,100,000