Organization - Additional Information (Detail)	12 Months Ended	6 Months Ended
	Dec. 31, 2014 Room tower sqft Restaurant	Jun. 30, 2016 Room
Wynn Macau
Organization Consolidation And Presentation Of Financial Statements Disclosure
Percentage of ownership	72.00%
Number of hotel	2
Number of rooms in hotel	1,008
Area of property	31,000
Number of restaurants	8
Wynn Macau | Casino
Organization Consolidation And Presentation Of Financial Statements Disclosure
Area of property	284,000
Wynn Macau | Retail
Organization Consolidation And Presentation Of Financial Statements Disclosure
Area of property	57,000
Wynn Macau | Salon and Spa
Organization Consolidation And Presentation Of Financial Statements Disclosure
Number of facilities	2
Wynn Macau | Pool
Organization Consolidation And Presentation Of Financial Statements Disclosure
Number of facilities	1
Wynn Las Vegas
Organization Consolidation And Presentation Of Financial Statements Disclosure
Percentage of ownership	100.00%
Number of hotel	2
Number of rooms in hotel	4,748
Wynn Las Vegas | Casino
Organization Consolidation And Presentation Of Financial Statements Disclosure
Area of property	186,000
Wynn Las Vegas | Retail
Organization Consolidation And Presentation Of Financial Statements Disclosure
Area of property	99,000
Wynn Las Vegas | Food and Beverage
Organization Consolidation And Presentation Of Financial Statements Disclosure
Number of outlets	34
Wynn Las Vegas | Inperson Committee Meeting
Organization Consolidation And Presentation Of Financial Statements Disclosure
Area of property	290,000
Wynn Las Vegas | Showrooms
Organization Consolidation And Presentation Of Financial Statements Disclosure
Number of showrooms	2
Wynn Las Vegas | Nightclubs and Beachclubs
Organization Consolidation And Presentation Of Financial Statements Disclosure
Number of facilities	3
Forecast | Wynn Palace
Organization Consolidation And Presentation Of Financial Statements Disclosure
Number of rooms in hotel		1,700