Accounting Policies [Abstract] Accounting Policies [Abstract] 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 Receivable Gross Current Receivables, gross 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 March 31, 2013 December 31, 2012 Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax March 31, 2013 December 31, 2012 Accumulated Other Comprehensive Income Loss Net Of Tax March 31, 2013 December 31, 2012 Accumulated other comprehensive income Accumulated Other Comprehensive Income [Member] Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income [Table] Accumulated Other Comprehensive Income [Table] Accumulated Other Comprehensive Income [Table] 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 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 After Amendment [Member] After Amendment [Member] After Amendment Airplanes, gross Airplanes Gross Airplanes 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 Amount of complementary tax exemption Amount Of Complementary Tax Exemption Amount of complementary tax exemption 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, 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 Award Type [Axis] Award Type Buildings And Improvements Gross Buildings and improvements Cancellation Of Contract [Axis] Cancellation of Contract [Axis] Cancellation Of Contract [Domain] Cancellation of Contract [Domain] Cash Bank deposits and cash on hand Cash And Cash Equivalents At Carrying Value Balance, end of period Balance, beginning of period Cash and cash equivalents Cash And Cash Equivalents Period Increase Decrease Increase 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 Equivalents At Carrying Value Cash equivalents Cash Flow Supplemental Disclosures [Line Items] Cash Flow Supplemental Disclosures [Line Items] Supplemental Disclosure of Cash Flow Information [Line Items] Cash Flow Supplemental Disclosures [Table] Cash Flow Supplemental Disclosures [Table] Cash Flow Supplemental Disclosures [Table] Cash Flow Supplemental Disclosures [Text Block] Supplemental Disclosure of Cash Flow Information Casino Expenses Casino Casino [Member] Casino [Member] Casino Casino Revenue Casino Change in Property and Equipment Included in Accounts and Construction Payables Change In Property And Equipment Included In Accounts And Construction Payables Change in construction payables and retention 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 15) Commitments And Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] 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 Dividends declared per common share: Common Stock [Member] Common Stock Common Stock Number Of Votes Common Stock Number Of Votes 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; 113,794,842 and 113,730,442 shares issued; 100,910,137 and 100,866,712 shares outstanding 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] Accumulated Other Comprehensive Income 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 Current Fiscal Year End Date Current Fiscal Year End Date Customer Deposits Current Customer deposits Debt Disclosure [Abstract] Debt Disclosure [Abstract] Debt Instrument Basis Spread On Variable Rate Interest in addition to LIBOR or HIBOR Debt Instrument Face Amount Redemption Price Promissory Note Redemption price promissory note, principal amount Debt instrument, principal amount Redemption price of promissory note 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 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 Net book value of first mortgage notes. Debt Instrument Net Book Value Debt instrument net book value 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 [Table] Schedule of Long-term Debt Instruments [Table] Debt Instrument Unamortized Discount Original issue discount Debt Purchase Price Percent Of Principal Amount Debt Purchase Price Percent Of Principal Amount Debt purchase price percentage of aggregate principal amount Debt Type [Axis] Debt Type [Axis] Debt Type [Axis] Debt Type [Domain] Debt Type [Domain] Debt Type [Domain] Deferred Finance Costs Noncurrent Net Deferred financing costs, net Deferred Income Tax Expense Benefit Deferred income taxes Deferred Tax Liabilities Current Deferred income taxes, net Deferred Tax Liabilities Noncurrent Deferred income taxes, net 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 [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments And Hedging Activities Disclosure [Text Block] Interest Rate Swaps Derivative Maturity Dates Interest rate swap maturity date Director [Member] Directors Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Stock-Based Compensation Dividend Payable Date To Be Paid Day Month And Year Dividend payable, date to be paid Dividends Cash Cash dividends Dividends Payable Date Declared Day Month And Year Dividend payable, date declared Dividends Payable Date Of Record Day Month And Year Dividend payable, record date Document Documentand Entity Information [Abstract] Document Documentand Entity Information [Abstract] Document Documentand Entity Information [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Document Information [Line Items] Document Information [Line Items] Document Period End Date Document Period End Date Document Type Document Type Domestic And Foreign Corporate Bonds [Member] Domestic And Foreign Corporate Bonds [Member] Domestic and Foreign Corporate Bonds Donation To Third Party Donation To Third Party Donation to University of Macau Development Foundation Down payment of premium Down Payment Of Premium Down payment of premium Due To Officers Or Stockholders Current And Noncurrent Amount due to officers and directors Earnings Per Share [Abstract] Net income attributable to Wynn Resorts, Limited: Earnings Per Share Basic Basic Net income attributable to Wynn Resorts, Ltd. per common share, basic Earnings Per Share Basic And Diluted [Abstract] Basic and diluted income per common share: Earnings Per Share Diluted Diluted Net income attributable to Wynn Resorts, Ltd. per common share, diluted Earnings Per Share [Line Items] Earnings Per Share [Line Items] Earnings Per Share [Line Items] Earnings Per Share [Table] Earnings Per Share [Table] Earnings Per Share [Table] Earnings Per Share [Text Block] Earnings Per Share Effect Of Exchange Rate On Cash And Cash Equivalents Effect of exchange rate on cash Employee Benefits And Share Based Compensation Total stock-based compensation costs Employee Related Liabilities Current Accrued compensation and benefits Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount Total stock-based compensation capitalized Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Employment Agreement Expiration Date Employment Agreement Expiration Date Agreement expiration Costs incurred during the period related to generating revenue from shows, retail outlets, convention space, spa, salon, wedding salon, and golf course operations. Entertainment Retail And Other Costs Entertainment, retail and other Entertainment Retail And Other [Member] Entertainment Retail And Other [Member] Entertainment, Retail and Other Revenue earned during the period from shows, retail outlets, convention space, spa, salon, wedding salon, and golf course. Entertainment Retail And Other Revenue Entertainment, retail and other Entities [Table] Entities [Table] Entity Central Index Key Entity Central Index Key Entity Common Stock Shares Outstanding Entity Common Stock, Shares Outstanding Entity [Domain] Entity [Domain] Entity Filer Category Entity Filer Category Entity Registrant Name Entity Registrant Name Equity [Abstract] Equity [Abstract] Equity Component [Domain] Equity Component [Domain] Equity Method Investment Ownership Percentage Percentage of ownership in joint ventures Estimated Cost Of Project Estimated Cost Of Project Project Budget Estimated costs of promotional allowances primarily included in Casino Expense. Estimated Costs Of Promotional Allowances Primarily Included In Casino Expenses Estimated costs of promotional allowances primarily included in casino expense Excess Tax Benefit From Share Based Compensation Financing Activities Excess tax benefits from stock-based compensation Excess Tax Benefit From Share Based Compensation Operating Activities Excess tax benefits from stock-based compensation Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value By Fair Value Hierarchy Level [Axis] Fair Value, Hierarchy Fair Value By Measurement Frequency [Axis] Measurement Frequency Fair Value Inputs Level 1 [Member] Quoted Market Prices in Active Markets (Level 1) Fair Value Inputs Level 2 [Member] Other Observable Inputs (Level 2) Fair Value Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value Measurements Fair Value Hierarchy [Domain] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Measurements Recurring [Member] Fair Value, Measurements, Recurring Fair Value Of Financial Instruments Policy Fair Value Measurements Five And Three Over Eight Percentage Wynn Las Vegas First Mortgage Notes Due March Fifteen Two Thousand Twenty Two [Member] Five And Three Over Eight Percentage Wynn Las Vegas First Mortgage Notes Due March Fifteen Two Thousand Twenty Two [Member] 5 3/8% Wynn Las Vegas First Mortgage Notes, Due March 15, 2022 Food And Beverage Cost Of Sales Food and beverage Food And Beverage [Member] Food And Beverage [Member] Food and Beverage Food And Beverage Revenue Food and beverage Fourty Two Million Dollar Note Payable, Due April One Two Thousand Seventeen [Member] Fourty Two Million Dollar Note Payable Due Aprilone Two Thousand Seventeen [Member] $42 Million Note Payable, Due April 1, 2017 Functional Area Square Footage. Functional Area Square Footage Area of property Furniture And Fixtures Gross Furniture, fixtures and equipment Gain Loss On Derivative Instruments Net Pretax Increase in swap fair value Gains Losses On Extinguishment Of Debt Loss on retirement of debt Loss on retirement of debt Carrying amount as of the balance sheet date for taxes payable (due within one year or within one normal operating cycle, if longer) based on gross gaming revenue in the jurisdictions in which we operate, subject to applicable jurisdictional adjustments. Gaming Taxes Payable Current Gaming taxes payable Gaming Taxes Policy [Text Block] Gaming Taxes Policy [Text Block] Gaming Taxes Gaming tax expense. Gaming Tax Expenses Gaming tax expenses General And Administrative [Member] General And Administrative [Member] General and Administrative Aggregate revenue earned from hotel, casino, food and beverage, entertainment, retail, and other operations. This amount includes the retail value of complimentary provided on a routine basis as part of our normal day to day operations. Gross Revenue Gross revenues Hotel [Member] Hotel Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Income before income taxes Income before income taxes Income Loss From Equity Method Investments Equity in income from unconsolidated affiliates