Organization	12 Months Ended
Organization	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Organization and Business Organization Wynn Resorts, Limited, a Nevada corporation (together with its subsidiaries, "Wynn Resorts" or the "Company") is a designer, developer, and operator of integrated resorts featuring luxury hotel rooms, high-end retail space, an array of dining and entertainment options, meeting and convention facilities, and gaming. In the Macau Special Administrative Region of the People's Republic of China ("Macau"), the Company owns approximately 72% of Wynn Macau, Limited ("WML"), which includes the operations of the Wynn Palace and Wynn Macau resorts. The Company refers to Wynn Palace and Wynn Macau as its Macau Operations. In Las Vegas, Nevada, the Company operates and, with the exception of certain retail space, owns 100% of Wynn Las Vegas. Additionally, the Company is a 50.1% owner and managing member of a joint venture that owns and leases certain retail space at Wynn Las Vegas (the "Retail Joint Venture"). The Company refers to Wynn Las Vegas and the Retail Joint Venture as its Las Vegas Operations. On June 23, 2019, the Company opened Encore Boston Harbor, an integrated resort in Everett, Massachusetts, that is owned 100% by the Company. On September 20, 2019, and concurrently with the Refinancing Transactions (as defined and discussed in Note 7, "Long-Term Debt"), Wynn Resorts contributed all of its equity interests in Wynn Group Asia, Inc. ("Wynn Asia") to Wynn Resorts Finance, LLC, which was formerly known as Wynn America, LLC ("WRF"), making Wynn Asia a wholly owned subsidiary of WRF. WRF is an indirect wholly owned subsidiary of Wynn Resorts. Wynn Asia is a holding company that holds Wynn Resorts' approximately 72% controlling interest in WML. Macau Operations Wynn Palace, which opened in August 2016, features a luxury hotel tower with 1,706 guest rooms, suites and villas, approximately 424,000 square feet of casino space, 14 food and beverage outlets, approximately 37,000 square feet of meeting and convention space, approximately 106,000 square feet of retail space, public attractions including a performance lake and floral art displays, and recreation and leisure facilities. Wynn Macau features two luxury hotel towers with a total of 1,010 guest rooms and suites, approximately 252,000 square feet of casino space, 12 food and beverage outlets, approximately 31,000 square feet of meeting and convention space, approximately 59,000 square feet of retail space, a rotunda show and recreation and leisure facilities. Las Vegas Operations Wynn Las Vegas features two luxury hotel towers with a total of 4,748 guest rooms, suites and villas, approximately 192,000 square feet of casino space, 33 food and beverage outlets, approximately 507,000 square feet of meeting and convention space (including the 217,000 square foot Meeting and Convention Expansion that opened in February 2020, as discussed in Development Projects below), approximately 160,000 square feet of retail space (the majority of which is owned and operated under a joint venture of which the Company owns 50.1%), as well as two theaters, three nightclubs and a beach club and recreation and leisure facilities. In December 2016, the Company entered into a joint venture arrangement (the "Retail Joint Venture") with Crown Acquisitions Inc. ("Crown") to own and operate approximately 88,000 square feet of existing retail space. In November 2017, the Company contributed approximately 74,000 square feet of additional retail space to the Retail Joint Venture. The Company opened the additional retail space during the fourth quarter of 2018. For more information on the Retail Joint Venture, see Note 18, "Retail Joint Venture." Encore Boston Harbor On June 23, 2019, the Company opened Encore Boston Harbor, an integrated resort in Everett, Massachusetts, adjacent to Boston along the Mystic River. The property features a luxury hotel tower with a total of 671 guest rooms and suites, approximately 210,000 square feet of casino space, 16 food and beverage outlets, approximately 71,000 square feet of meeting and convention space, and approximately 8,000 square feet of retail space. Public attractions include a waterfront park, floral displays, and water shuttle service to downtown Boston. Development Projects In February 2020, the Company opened its meeting and convention space expansion at Wynn Las Vegas (the "Meeting and Convention Expansion"). The facility features approximately 217,000 square feet of state-of-the-art meeting and convention space available for group reservations. Subsequent Events In January 2020, an outbreak of a new strain of coronavirus, COVID-19, was identified in Wuhan, China. Currently, no fully effective vaccines have been developed and there can be no assurance that an effective vaccine can be discovered in time to protect against a potential pandemic. In response, on February 4, 2020, the Macau government announced the closure of all casino operations in Macau, including those at Wynn Palace and Wynn Macau, for a period of 15 days. On February 20, 2020, the Company's casino operations at Wynn Palace and Wynn Macau reopened on a reduced basis, and are expected to fully reopen by March 20, 2020 (the deadline set by the Macau government for Macau casinos to fully reopen). Since reopening, all casinos in Macau are subject to a number of government procedures which address the health and safety of staff and patrons, including limitations on the spacing of open tables and slot machines to ensure adequate distance between people, stopping patrons from congregating together, limiting the number of players and spectators at a table to three to four, temperature checks, mask protection, and health declarations. Visitation to Macau has fallen precipitously since the outbreak of Coronavirus, driven by the Chinese government's suspension of its visa and group tour schemes that allow mainland Chinese residents to travel to Macau, quarantines in certain cities in mainland China, and the suspension by the Hong Kong government of ferry service from Hong Kong to Macau until further notice. The US government has put in place restrictions on travel to the US from mainland China, and could expand the restrictions. A significant portion of the Company's US business relies on the willingness and ability of premium international customers to travel to the US, including from mainland China. As such, the Company's Las Vegas Operations and operations at Encore Boston Harbor may also be adversely impacted. The Coronavirus outbreak has had and will have an adverse effect on the Company's results of operations. Given the uncertainty around the extent and timing of the potential future spread or mitigation of the Coronavirus and around the imposition or relaxation of protective measures, management cannot reasonably estimate the impact to the Company's future results of operations, cash flows, or financial condition.