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Basis of Presentation and Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
Accounting Policies [Abstract] |  |
Gaming tax expenses | $ 176.9 | $ 212.0

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- Definition Gaming tax expense. + References No definition available. + Details
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Namespace Prefix: | wynn_
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Balance Type: | debit
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