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Related Party Transactions - Additional Information (Detail) (USD $)
 1 Months Ended 12 Months Ended 1 Months Ended 24 Months Ended 1 Months Ended 0 Months Ended
Feb. 18, 2012
Dec. 31, 2014
acre
Mar. 01, 2012
Feb. 29, 2012
Dec. 29, 2012
Feb. 25, 2015
Dec. 31, 2013
Related Party Transaction              
Common shares redeemed and canceled 24,549,222us-gaap_StockRedeemedOrCalledDuringPeriodShares            
Amount due to officers and directors   $ 600,000us-gaap_DueToOfficersOrStockholdersCurrentAndNoncurrent         $ 800,000us-gaap_DueToOfficersOrStockholdersCurrentAndNoncurrent
Notice required for lease termination at Villa Suite, days   90 days          
Purchase of home for director   9,400,000wynn_PurchaseAndRenovationCostsForHomePurchasedForEmployee          
Number of percentage points used to determine discount on home purchase   10.00%wynn_NumberOfPercentagePointsUsedToDetermineDiscountOnHomePurchase          
Consideration in event of employee agreement termination   1.00wynn_ConsiderationInEventOfEmployeeAgreementTermination          
Area of land (in acres)   2us-gaap_AreaOfLand          
Term of notice required to exercise option   30 days          
Agreement expiration   2020-10          
Surname Rights Agreement expiration date   October 24, 2017          
SW Lease              
Related Party Transaction              
Rental value     440,000us-gaap_OperatingLeasesIncomeStatementLeaseRevenue
/ wynn_LeaseAgreementAxis
= wynn_SWLeaseMember		 503,831us-gaap_OperatingLeasesIncomeStatementLeaseRevenue
/ wynn_LeaseAgreementAxis
= wynn_SWLeaseMember		      
SW Lease | After Amendment              
Related Party Transaction              
Rental value         525,000us-gaap_OperatingLeasesIncomeStatementLeaseRevenue
/ wynn_LeaseAgreementAxis
= wynn_SWLeaseMember
/ us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis
= wynn_AfterAmendmentMember		    
Subsequent Event | SW Lease | After Amendment              
Related Party Transaction              
Rental value           $ 559,295us-gaap_OperatingLeasesIncomeStatementLeaseRevenue
/ wynn_LeaseAgreementAxis
= wynn_SWLeaseMember
/ us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis
= wynn_AfterAmendmentMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember