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Organization - Additional Information (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Organization and Basis of Presentation [Line Items]
Cash and cash equivalents	$ 2,880,971	$ 2,351,904
WRF Revolver, due 2024 \| Senior Secured Revolving Credit Facility \| WRF
Organization and Basis of Presentation [Line Items]
Available borrowing capacity	40,900
Wynn Macau Revolver, due 2022 \| Senior Secured Revolving Credit Facility \| Wynn Macau
Organization and Basis of Presentation [Line Items]
Available borrowing capacity	74,200
Commitment to pay salary, tips, and benefits continuation for all U.S. employess for period from April 1 through May 15, 2020
Organization and Basis of Presentation [Line Items]
Accrual of net expense related to commitment to pay salary, tips and benefits continuation for all U.S. employees	$ 75,700
Wynn Las Vegas
Organization and Basis of Presentation [Line Items]
Percentage of ownership	100.00%
Wynn Palace and Wynn Macau
Organization and Basis of Presentation [Line Items]
Percentage of ownership	72.00%
Retail Joint Venture
Organization and Basis of Presentation [Line Items]
Percentage of ownership	50.10%