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Organization - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2021	May 31, 2021	Dec. 31, 2020
Organization and Basis of Presentation [Line Items]
Cash and cash equivalents	$ 2,802,716		$ 3,482,032
Long-term debt, gross	11,997,688		13,154,049
Senior Notes \| Wynn Macau
Organization and Basis of Presentation [Line Items]
Long-term debt, gross	4,700,000
WRF Revolver, due 2024 \| Senior Secured Revolving Credit Facility \| WRF
Organization and Basis of Presentation [Line Items]
Available borrowing capacity	834,200
Long-term debt, gross	0		716,000
Wynn Macau Revolver, due 2022 \| Senior Secured Revolving Credit Facility \| Wynn Macau
Organization and Basis of Presentation [Line Items]
Available borrowing capacity	293,200
Long-term debt, gross	$ 457,290		$ 407,443
Wynn Palace and Wynn Macau
Organization and Basis of Presentation [Line Items]
Percentage of ownership	72.00%
Wynn Las Vegas
Organization and Basis of Presentation [Line Items]
Percentage of ownership	100.00%
Available gaming area capacity (percent)		100.00%
Retail Joint Venture
Organization and Basis of Presentation [Line Items]
Percentage of ownership	50.10%
Encore Boston Harbor
Organization and Basis of Presentation [Line Items]
Percentage of ownership	100.00%
Wynn Interactive
Organization and Basis of Presentation [Line Items]
Percentage of ownership	74.00%
Equity interest retained (percent)	58.00%
Voting interest retained (percent)	72.00%