Accounts Notes And Loans Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts Notes Loans And Financing Receivables By Legal Entity Of Counterparty Type [Axis] Legal Entity of Counterparty, Type Accounts Payable Current Accounts and construction payables Accounts payable Accounts Receivable Gross Current Receivables, gross Accretion Amortization Of Discounts And Premiums Investments Amortization of discount on investment securities and other Accretion Expense Long-term debt, including the accretion of debt discounts Accrued Income Taxes Current Income taxes payable Accumulated Depreciation Depletion And Amortization Property Plant And Equipment Less: accumulated depreciation Accumulated Other Comprehensive Income [Line Items] Accumulated Other Comprehensive Income [Line Items] Accumulated Other Comprehensive Income [Line Items] Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax December 31, 2012 December 31, 2011 Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax December 31, 2012 December 31, 2011 Accumulated Other Comprehensive Income Loss Net Of Tax December 31, 2012 December 31, 2011 Accumulated other comprehensive income Accumulated Other Comprehensive Income [Member] Accumulated other comprehensive income Accumulated Other Comprehensive Income [Table] Accumulated Other Comprehensive Income [Table] Accumulated Other Comprehensive Income [Table] Acquisition Costs Payment under land concession contract Additional land lease payments. Additional Land Lease Payments Annual lease payments Additional Paid In Capital Additional paid-in capital Additional Paid In Capital [Member] Additional paid-in capital Additions To Noncurrent Assets Capital expenditures Earnings Before Interest, Taxes, Depreciation, Amortization, Pre-opening Costs, Property Charges And Other, Corporate Expenses, Stock-Based Compensation, And Other Non-Operating Income And Expenses And Includes Equity In Income From Unconsolidated Affiliates Adjusted Property Ebitda Adjusted Property EBITDA Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value Stock-based compensation Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation Excess tax benefits from stock-based compensation Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Advertising Costs Policy [Text Block] Advertising Costs Advertising Expense Total advertising costs Airplanes, gross Airplanes Gross Airplanes Airplanes [Member] Airplanes [Member] Airplanes Allowance For Doubtful Accounts [Member] Allowance for Doubtful Accounts Allowance For Doubtful Accounts Receivable Current Less: allowance for doubtful accounts Amended Credit Facility [Member] Amended Credit Facility [Member] Amended Wynn Macau Credit Facilities Amendment Flag Amendment Flag Amortization of cash outflows paid to third parties in connection with debt origination, which will occur over the remaining maturity period of the associated long-term debt. Amortization Of Deferred Financing Costs Amortization and write-offs of deferred financing costs and other Amortization Of Financing Costs And Discounts Interest expense Amortization Of Intangible Assets Finite-lived intangible assets, amortization Amount of complementary tax exemption Amount Of Complementary Tax Exemption Amount of complementary tax exemption Amount of Complementary Tax Exemption Per Share Amount Of Complementary Tax Exemption Per Share Amount of complementary tax exemption per share Amount of time guarantee will be at fixed amount Amount Of Time Guarantee Will Be At Fixed Amount Amount of time guarantee will be at fixed amounts (days) Annual Complementary Tax Obligation Annual Complementary Tax Obligation Annual complementary tax to be paid Annual Fee Paid To Bank Annual Fee Paid To Bank Maximum guarantee by Macau government Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Anti-dilutive stock options excluded from the calculation of diluted earnings per share Area Of Land Area of land Aruze United States Of America, Inc [Member] Aruze United States Of America Inc [Member] Aruze USA, Inc. Assets Assets Total assets Assets [Abstract] ASSETS Assets Current Total current assets Assets Current [Abstract] Current assets: Available For Sale Securities Amortized Cost Available-for-sale securities, Amortized cost Available-for-sale Securities, Debt Maturities, After One Through Two Years, Amortized Cost Availableforsale Securities Debt Maturities After One Through Two Years Amortized Cost Due after one year through two years Available for Sale Securities, Debt Maturities, after One Through Two Years of Balance Sheet Date, Fair Value Available For Sale Securities Debt Maturities After One Through Two Years Fair Value Due after one year through two years Available For Sale Securities Debt Maturities Amortized Cost Amortized cost Available For Sale Securities Debt Maturities Amortized Cost [Abstract] Amortized cost Available For Sale Securities Debt Maturities Fair Value [Abstract] Fair value Amount of available-for-sale debt securities at cost, maturing within one year of the balance sheet date. Available For Sale Securities Debt Maturities Within One Year Of Balance Sheet Date Amortized Cost Due in one year or less Amount of available-for-sale debt securities at fair value maturing within one year of the balance sheet date. Available For Sale Securities Debt Maturities Within One Year Of Balance Sheet Date Fair Value Due in one year or less Available For Sale Securities Debt Securities Fair value Available For Sale Securities Fair Value Disclosure Available-for-sale securities Available-for-sale securities, Fair value (net carrying amount) Availableforsale Securities Gross Unrealized Gain Available-for-sale securities, Gross unrealized gains Available For Sale Securities Gross Unrealized Losses 1 Available-for-sale securities, Gross unrealized losses Available For Sale Securities [Text Block] Schedule of Investment Securities Buildings And Improvements Gross Buildings and improvements Buildings And Improvements [Member] Buildings And Improvements [Member] Buildings And Improvements Business Tax Credit Carryforwards Business Tax [Member] General Business Tax Carryforwards Cancellation Of Contract [Axis] Cancellation of Contract [Axis] Cancellation Of Contract [Domain] Cancellation of Contract [Domain] Capitalized Interest Policy [Text Block] Capitalized Interest Policy [Text Block] Capitalized Interest Capital loss carryforward expiration. Capital Loss Carryforward Expiration U.S. capital loss carryforward expiration Cash Bank deposits and cash on hand Cash And Cash Equivalents At Carrying Value Balance, end of year Balance, beginning of year Cash and cash equivalents Cash And Cash Equivalents Period Increase Decrease Increase (decrease) in cash and cash equivalents Cash And Cash Equivalents Period Increase Decrease [Abstract] Cash and cash equivalents: Cash And Cash Equivalents Policy [Text Block] Cash and Cash Equivalents Cash distribution declared on non-vested stock. Cash Distribution On Non Vested Stock Increase in liability for dividends declared on nonvested stock Cash Dividends Paid To Parent Company By Consolidated Subsidiaries Cash dividends paid to parent company Cash Equivalents At Carrying Value Cash equivalents Casino Expenses Casino Casino [Member] Casino [Member] Casino Casino Revenue Casino Change in Accounting Estimate, Financial Effect, Net Income (Loss) Change In Accounting Estimate Financial Effect Net Income Loss Adjustment effect in net income Change in Accounting Estimate, Financial Effect, Net Income Loss Per Share, Diluted Change In Accounting Estimate Financial Effect Net Income Loss Per Share Diluted Adjustment effect in diluted earning per share Change in Operating Income Change In Operating Income Adjustment effect in operating income Change in Property and Equipment Included in Accounts and Construction Payables Change In Property And Equipment Included In Accounts And Construction Payables Change in property and equipment included in accounts and construction payables Class Of Stock [Line Items] Class of Stock [Line Items] Commercial Paper Not Included With Cash And Cash Equivalents [Member] Commercial Paper Commitment For Additional Donation To Third Party Commitment For Additional Donation To Third Party Commitment for additional donations to be made Commitments And Contingencies Commitments and contingencies (Note 16) Commitments and contingencies (Note 2) Commitments And Contingencies Disclosure [Text Block] Commitments and Contingencies Commitments and Contingencies [Line Items] Commitments And Contingencies [Line Items] Commitments and Contingencies [Line Items] Commitments and Contingencies [Table] Commitments And Contingencies [Table] Commitments and Contingencies [Table] Common Stock Dividends Per Share Cash Paid Declared cash dividend Common Stock Dividends Per Share Declared Dividend per share Dividends declared per common share: Common Stock [Member] Common Stock Common Stock Number Of Votes Common Stock Number Of Votes Number of shares voted Number of Voted Shares Common Stock Par Or Stated Value Per Share Common stock, par value Common Stock Shares Authorized Common stock, shares authorized Common Stock Shares Issued Common stock, shares issued Common Stock Shares Outstanding Ending balance (in shares) Beginning balance (in shares) Common stock, shares outstanding Common Stock Value Common stock, par value $0.01; 400,000,000 shares authorized; 113,730,442 and 137,937,088 shares issued; 100,866,712 and 125,080,998 shares outstanding Common stock, par value $0.01; 400,000,000 shares authorized; 113,730,442 and 137,937,088 shares issued; and, 100,866,712 and 125,080,998 shares outstanding Common Stock Voting Rights Common stock, voting rights Company's matching contribution percentage. Companys Matching Contribution Percentage Company's matching contribution percentage Compensation Related Costs Policy [Text Block] Stock-Based Compensation Complementary Tax Rate Complementary Tax Rate Complementary tax rate Component Of Operating Other Cost And Expense [Line Items] Property Charges and Other [Line Items] Component Of Other Operating Cost And Expense [Table] Component of Other Operating Cost and Expense [Table] Comprehensive Income Net Of Tax Comprehensive income attributable to Wynn Resorts, Limited Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest Less: Comprehensive income attributable to noncontrolling interest Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest Total comprehensive income Comprehensive Income Note [Text Block] Comprehensive Income Comprehensive Income Policy [Text Block] Comprehensive Income Policy [Text Block] Comprehensive Income Condensed Financial Information Of Parent Company Only Disclosure [Text Block] Condensed Financial Statements (Parent Company Only) Condensed Financial Statements Captions [Line Items] Condensed Financial Statements, Captions [Line Items] Consideration In Event Of Employee Agreement Termination Consideration In Event Of Employee Agreement Termination Consideration in event of employee agreement termination Consolidated leverage ratio minimum numerator Consolidated Leverage Ratio Minimum Numerator Consolidated leverage ratio, minimum Consolidation Policy [Text Block] Principles of Consolidation Construction In Progress Gross Construction in progress Carrying value as of the balance sheet date of the amount retained from construction contract payments to ensure the contractor completes the construction before the retention is returned, within one year of the balance sheet date (or one operating cycle, if longer). Construction Retention Payables Current Construction retention Corporate And Other [Member] Corporate and Other Corporate Expenses And Other Corporate Expenses And Other Corporate expenses and other Costs And Expenses Total operating costs and expenses Costs And Expenses [Abstract] Operating costs and expenses: Cotai Development And Land Concession Contract [Member] Cotai Development And Land Concession Contract [Member] Cotai Development and Land Concession Contract Cotai Land Agreement [Member] Cotai Land Agreement [Member] Cotai Land Agreement Current Federal Tax Expense Benefit Federal, Current Current Fiscal Year End Date Current Fiscal Year End Date Current Foreign Tax Expense Benefit Foreign, Current Current Income Tax Expense Benefit Current, Total Customer Deposits Current Customer deposits Customer Loyalty Program Policy [Text Block] Customer Loyalty Program Policy [Text Block] Customer Loyalty Program Debt Instrument [Axis] Debt Instrument Debt Instrument Basis Spread On Variable Rate Interest in addition to LIBOR or HIBOR Spread on variable rate Debt Instrument Face Amount Debt instrument, principal amount Redemption Price Promissory Note Debt Instrument Face Amount From Private Offering Debt Instrument Face Amount From Private Offering Aggregate principal amount of debt instrument issued under private offering Debt Instrument Fair Value Fair value of debt instrument Date when the first installment of debt instrument is scheduled to be repaid, in CCYY-MM-DD format. Debt Instrument First Installment Payment Date Long-term debt, first installment payment date Debt Instrument, Increase Decrease in Premium Debt Instrument Increase Decrease In Premium Debt premium decrease Debt Instrument Interest Rate Stated Percentage Debt instrument, interest rate Debt Instrument [Line Items] Debt Instrument [Line Items] Debt Instrument Maturity Date Long-term debt due date Debt Instrument, Maturity, Month and Year Debt Instrument Maturity Month And Year Maturity period Debt Instrument Name [Domain] Debt Instrument, Name [Domain] Net book value of first mortgage notes. Debt Instrument Net Book Value Debt instrument net book value Debt Instrument Payment Terms Debt instrument payment terms Debt Instrument Period [Axis] Debt Instrument Period [Axis] Debt Instrument Period Debt Instrument Period [Domain] Debt Instrument Period [Domain] Debt Instrument Period [Domain] Debt Instrument Previous Maturity Date Debt Instrument Previous Maturity Date Long-term debt previous due date Debt instruments amount of balloon payment due at maturity Debt Instruments Amount Of Balloon Payment Due At Maturity Balloon payment due at maturity Debt Instrument [Table] Schedule of Long-term Debt Instruments [Table] Debt Instrument Unamortized Discount Original issue discount Debt issued at discount, price as percentage of principal Debt Issued At Discount Price As Percentage Of Principal Debt issued at discount, price as percentage of principal Debt Purchase Price Percent Of Principal Amount Debt Purchase Price Percent Of Principal Amount Debt purchase price percentage of aggregate principal amount Debt redemption price as percentage of principal Debt Redemption Price As Percentage Of Principal Debt redemption price as percentage of principal Debt Type [Axis] Debt Type [Axis] Debt Type [Axis] Debt Type [Domain] Debt Type [Domain] Debt Type [Domain] Deferred Federal Income Tax Expense Benefit Federal, Deferred Deferred Finance Costs Noncurrent Net Deferred financing costs, net Deferred Financing Costs Policy [Text Block] Deferred Financing Costs Policy [Text Block] Deferred Financing Costs Deferred Foreign Income Tax Expense Benefit Foreign, Deferred Deferred Income Tax Expense Benefit Deferred income taxes Deferred tax asset intangibles and related other Deferred Tax Asset Intangibles And Related Other Intangibles and related other Deferred Tax Asset Pre Opening Costs Non Current Deferred Tax Asset Pre Opening Costs Non Current Pre-opening costs Deferred tax asset receivable inventories accrued liabilities and other Deferred Tax Asset Receivable Inventories Accrued Liabilities And Other Receivables, inventories, accrued liabilities and other Deferred Tax Assets And Liabilities [Line Items] Deferred Tax Assets And Liabilities [Line Items] Deferred Tax Assets And Liabilities [Line Items] Deferred Tax Assets And Liabilities [Table] Deferred Tax Assets And Liabilities [Table] Deferred Tax Assets And Liabilities [Table] Deferred Tax Assets Capital Loss Carryforwards U.S. capital loss carryforward incurred Deferred Tax Assets Gross Noncurrent Long-term deferred tax assets gross Deferred Tax Assets Liabilities Net Net deferred tax liability Deferred Tax Assets Net Deferred tax assets, net, total Deferred Tax Assets Net Current Deferred tax assets, net, current, total Deferred Tax Assets Net Noncurrent Deferred tax assets, net, non current Deferred Tax Assets Operating Loss Carryforwards Net operating loss carryforwards Deferred Tax Assets Other Other Deferred Tax Assets Property Plant And Equipment Property and equipment Deferred Tax Assets Tax Credit Carryforwards Foreign Foreign tax credit carryforwards Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost Stock based compensation Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities Accrued liabilities Deferred Tax Assets Valuation Allowance Current Less: valuation allowance Deferred Tax Assets Valuation Allowance Noncurrent Less: valuation allowance Deferred Tax Liabilities Current Deferred income taxes, net Deferred tax liabilities current, total Deferred Tax Liabilities Noncurrent Deferred income taxes, net Long-term deferred tax liabilities, total Deferred Tax Liabilities Property Plant And Equipment Property and equipment Deferred Tax Liability Not Recognized Amount Of Unrecognized Deferred Tax Liability Deferred tax liability associated with temporary differences Deferred Tax Liability Not Recognized Cumulative Amount Of Temporary Difference Temporary differences resulting from earnings of certain non-U.S. subsidiaries Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plans Disclosures Defined Benefit Plans [Axis] Defined Benefit Plans and Other Postretirement Benefit Plans Defined Benefit Plans [Domain] Defined Benefit Plans and Other Postretirement Benefit Plans [Domain] Defined Contribution Plan Cost Recognized Retirement savings plan contribution expense Defined Contribution Plan Employers Matching Contribution Annual Vesting Percentage Company's matching contribution percentage Defined Contribution Plan Maximum Annual Contribution Per Employee Percent Employee contribution percentage Depreciation Depreciation expense Depreciation And Amortization Depreciation and amortization Derivative Contract Type [Domain] Derivative Contract Type [Domain] Derivative Fixed Interest Rate Interest rate swap fixed interest rate Derivative Instrument Risk [Axis] Derivative Instrument Risk Derivative Instruments And Hedging Activities Disclosure [Text Block] Interest Rate Swaps Derivative Maturity Dates Interest rate swap maturity date Derivatives Policy [Text Block] Derivative Financial Instruments Director [Member] Directors Disclosure Benefit Plans Additional Information [Abstract] Disclosure Benefit Plans Additional Information [Abstract] Disclosure Benefit Plans Additional Information [Abstract]