Receivables [Abstract] Receivables, net Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Other Income and Expenses [Abstract] Property Charges and Other Property Charges And Other [Text Block] Entire disclosure for the aggregate amount of expenses charged against earnings to eliminate the capitalized costs of projects abandoned during the reporting period, expenses associated with business termination activities and other expenses. Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Wynn Las Vegas, LLC [Member] Wynn Las Vegas, LLC [Member] Wynn Las Vegas LLC Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] 7 3/4% First Mortgage Notes, due August 15, 2020 Seven And Three Over Four Wynn Las Vegas First Mortgage Notes Due Augustfifteen Two Thousand Twenty [Member] Seven And Three Over Four Wynn Las Vegas First Mortgage Notes Due Augustfifteen Two Thousand Twenty [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Mortgages [Member] Mortgages [Member] Wynn Macau Senior Term Loan Facilities, Due July 31, 2017 And July 31, 2018 Wynn Macau Senior Term Loan Facilities As Amended July Two Thousand Twelve Due July Thirty First Two Thousand Seventeen And July Thirty First Two Thousand Eighteen [Member] Wynn Macau Senior Term Loan Facilities As Amended July Two Thousand Twelve Due July Thirty First Two Thousand Seventeen And July Thirty First Two Thousand Eighteen [Member] Wynn Macau Senior Revolver, Due July 31, 2017 Wynn Macau Senior Revolver [Member] Wynn Macau Senior Revolver [Member] 5 1/4% Wynn Macau Senior Notes Due October 15, 2021 Five And Two Point Five Percentage Wynn Macau Senior Notes Due October Fifteen Twenty Twenty One [Member] Five And Two Point Five Percentage Wynn Macau Senior Notes Due October Fifteen Twenty Twenty One [Member] 7 7/8% Wynn Las Vegas First Mortgage Notes Due May 1, 2020 Seven And Seven Over Eight Percentage Wynn Las Vegas First Mortgage Notes Due Mayone Two Thousand Twenty [Member] Seven And Seven Over Eight Percentage Wynn Las Vegas First Mortgage Notes Due Mayone Two Thousand Twenty [Member] 7 3/4% First Mortgage Notes, due August 15, 2020 5 3/8% First Mortgage Notes, due March 15, 2022 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] 4 1/4% Senior Notes, due May 30, 2023 Four And One Over Four Percentage Wynn Las Senior Notes Due May Thirty Twenty Twenty Three [Member] Four And One Over Four Percentage Wynn Las Senior Notes Due May Thirty Twenty Twenty Three [Member] 5 1/2% Senior Notes, due March 1, 2025 Five and One Half Percent Senior Notes Due March One Twenty Twenty Five [Member] Five and One Half Percent Senior Notes Due March One Twenty Twenty Five [Member] Redemption Price Promissory Note with former stockholder and related party, due February 18, 2022; interest at 2% Redemption Price Promissory Note With Former Stockholder And Related Party Due February Eighteen Two Thousand Twenty Two [Member] Redemption Price Promissory Note with Former Stockholder And Related Party, Due February Eighteen, Two Thousand Twenty Two [Member] Debt Instrument Period [Axis] Debt Instrument Period [Axis] Debt Instrument Period [Axis] Debt Instrument Period [Domain] Debt Instrument Period [Domain] Debt Instrument Period [Domain] Due July 31, 2017 Period One [Member] Period 1 [Member] Due July 31,2018 Period Two [Member] Period 2 [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Notes Under Tender Offer Face Amount Redeemed Notes Under Tender Offer Face Amount Redeemed Notes Under Tender Offer, Face Amount Redeemed Original issue discount Debt Instrument, Unamortized Discount Original issue premium Debt Instrument, Unamortized Premium Interest in addition to LIBOR Debt Instrument, Basis Spread on Variable Rate Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Debt instrument, principal amount Debt Instrument, Face Amount Long-term debt due date Debt Instrument, Maturity Date Property, Plant and Equipment [Abstract] Schedule of Property and Equipment, Net Property, Plant and Equipment [Table Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Stock-based compensation capitalized into construction Employee Service Share-Based Compensation, Allocation Of Recognized Period Costs, Capitalized Amount From Restricted Stock Award Represents the compensation cost capitalized during the period arising from restricted stock award granted to employees, directors and certain consultants qualifying for treatment as employees. Long-Term Debt Long-term Debt [Text Block] Summary of Long-Term Debt Schedule of Long-term Debt Instruments [Table Text Block] Schedule of Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Business Segments Segments [Axis] Segments [Domain] Segments [Domain] Casino Casino [Member] Casino [Member] Rooms Rooms [Member] Rooms [Member] Food and beverage Food And Beverage [Member] Food And Beverage [Member] Entertainment, retail and other Entertainment Retail And Other [Member] Entertainment Retail And Other [Member] General and administrative General And Administrative [Member] General And Administrative [Member] Pre-opening costs Pre-Open Costs [Member] Pre-Open Costs [Member] Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Total stock-based compensation expense Share-based Compensation Allocated Share-based Compensation Expense Allocated Share-based Compensation Expense Total stock-based compensation capitalized Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost Component Of Other Operating Income And Expense [Table] Component Of Other Operating Income And Expense [Table] Component Of Other Operating Income And Expense [Table] Wynn Macau Wynn Macau [Member] Wynn Macau [Member] Component of Operating Other Cost and Expense [Line Item] Component Of Operating Income And Expense [Line Items] Component Of Operating Income And Expense [Line Items] Property charges and other Project Abandonment Costs The aggregate amount of expenses charged against earnings to eliminate the capitalized costs of projects abandoned during the reporting period and expenses associated with business termination activities and other expenses. Square footage of renovated area Area Of Real Estate Property, Renovated Area Of Real Estate Property, Renovated Summary of Total Compensation Cost Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Related Party Transactions [Abstract] Related Party Transactions Related Party Transactions Disclosure [Text Block] Investments, Debt and Equity Securities [Abstract] Due in one year or less Available For Sale Securities Debt Maturities Within One Year Of Balance Sheet Date Fair Value Amount of available-for-sale debt securities at fair value maturing within one year of the balance sheet date. Due after one year through two years Available For Sale Securities Debt Maturities After One Through Two Years Fair Value Available for Sale Securities, Debt Maturities, after One Through Two Years of Balance Sheet Date, Fair Value Fair value Available-for-sale Securities, Debt Securities Derivative Instruments and Hedging Activities Disclosure [Abstract] Interest Rate Swaps [Table] Interest Rate Swaps [Table] Interest Rate Swaps [Table] Measurement Frequency Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value, Measurements, Recurring Fair Value, Measurements, Recurring [Member] Derivative Instrument Risk Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Wynn Macau Swap Wynn Macau Swap [Member] Wynn Macau Swap [Member] Major Types of Debt and Equity Securities Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] Two of the swap agreements Interest Rate Swaps One [Member] Interest Rate Swaps One [Member] Interest Rate Swap 3 Interest Rate Swap Three [Member] Interest Rate Swap 3 [Member] Interest Rate Swaps [Line Items] Interest Rate Swaps [Line Items] Interest Rate Swaps [Line Items] Interest rate swap assets (liability) included in deposits and other assets, fair value Interest Rate Derivatives, at Fair Value, Net Number of interest rate swap agreements Number of Interest Rate Derivatives Held Interest rate swap fixed interest rate (percentage) Derivative, Fixed Interest Rate Interest rate swap notional amount Derivative Asset, Notional Amount Interest rate swap maturity date Derivative, Maturity Date Segment Reporting [Abstract] Summary of Operations by Segment Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Summary of Assets by Segment Reconciliation of Assets from Segment to Consolidated [Table Text Block] Maximum [Member] 4 1/4% Wynn Las Vegas Senior Notes Due May 30, 2023 Four And One Over Four Percentage Wynn Las Vegas Senior Notes Due May Thirty Two Thousand Twenty Three [Member] Four And One Over Four Percentage Wynn Las Vegas Senior Notes Due May Thirty Two Thousand Twenty Three [Member] 5 3/8% First Mortgage Notes, due March 15, 2022 Senior Secured Credit Facility Term Loans [Member] Senior Secured Credit Facility Term Loans [Member] Senior Secured Credit Facility Term Loans [Member] 5 1/2% Senior Notes due 2025 [Member] [Member] 5 1/2% Senior Notes due 2025 [Member] [Member] 5 1/2% Senior Notes due 2025 [Member] [Member] Senior Revolving Credit Facility due July 31, 2017 [Member] Senior Revolving Credit Facility due July 31, 2017 [Member] Senior Revolving Credit Facility due July 31, 2017 [Member] Five And One Over Four Percentage Wynn Macau Senior Notes Due October Fifteen Two Thousand Twenty One [Member] Five And One Over Four Percentage Wynn Macau Senior Notes Due October Fifteen Two Thousand Twenty One [Member] Five And One Over Four Percentage Wynn Macau Senior Notes Due October Fifteen Two Thousand Twenty One [Member] Redemption Price Promissory Note with former stockholder and related party, due February 18, 2022; interest at 2% Wynn Macau [Member] Wynn Las Vegas, LLC and Wynn Las Vegas Capital Corp [Member] Wynn Las Vegas, LLC and Wynn Las Vegas Capital Corp [Member] Wynn Las Vegas, LLC and Wynn Las Vegas Capital Corp Aruze USA, Inc. Aruze United States Of America Inc [Member] Aruze United States Of America Inc [Member] Notes Payable to Banks [Member] Notes Payable to Banks [Member] Revolving Credit Facility Revolving Credit Facility [Member] Senior Notes [Member] Senior Notes [Member] Notes Payable, Other Payables [Member] Notes Payable, Other Payables [Member] Payment default classification period for interest payment Payment Default Classification Period For Interest Payment Payment Default Classification Period For Interest Payment Unamortized deferred financing costs Unamortized Deferred Financing Costs Unamortized Deferred Financing Costs Expensed Long-term debt total Long-term Debt Current portion of long-term debt Long-term Debt, Current Maturities Non current portion of long-term debt Long-term Debt, Excluding Current Maturities Extinguishment of Debt, Fees included in Gain (Loss) Extinguishment of Debt, Fees included in Gain (Loss) Extinguishment of Debt, Fees included in Gain (Loss) Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization and Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Equity [Abstract] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Foreign currency translation Accumulated Translation Adjustment [Member] Unrealized gain on investment securities Accumulated Net Unrealized Investment Gain (Loss) [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Changes in Accumulated Other Comprehensive Income [Roll Forward] Changes in Accumulated Other Comprehensive Income [Roll Forward] Changes in Accumulated Other Comprehensive Income [Roll Forward] December 31, 2014 Accumulated Other Comprehensive Income (Loss), Net of Tax Current period other comprehensive (loss) gain Other Comprehensive Income (Loss), before Reclassifications, Net of Tax March 31, 2015 Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Total Wynn Resorts, Ltd. stockholders’ equity (deficit) Parent Company [Member] Common stock Common Stock [Member] Treasury stock Treasury Stock [Member] Additional paid-in capital Additional Paid-in Capital [Member] Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss) [Member] (Accumulated deficit) retained earnings Retained Earnings [Member] Noncontrolling interest Noncontrolling Interest [Member] Statement [Line Items] Statement [Line Items] Beginning balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Beginning balance (in shares) Common Stock, Shares, Outstanding Net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Net unrealized gain on investment securities Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Exercise of stock options (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Shares repurchased by the Company and held as treasury shares Treasury Stock, Value, Acquired, Cost Method Shares repurchased by the Company and held as treasury shares (in shares) Treasury Stock, Shares, Acquired Issuance of restricted stock Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Shares of subsidiary repurchased for share award plan Shares of Subsidiary Repurchased for Share Award Plan Amount of cash outflow by majority owned subsidiary for the repurchase of its shares used in employee share award plan Issuance of restricted stock (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Cash dividends declared Dividends, Cash Excess tax benefits from stock-based compensation Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation Stock-based compensation Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Ending balance Ending balance (in shares) Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Domestic and foreign corporate bonds Domestic And Foreign Corporate Bonds [Member] Domestic And Foreign Corporate Bonds [Member] Commercial paper Commercial Paper, Not Included with Cash and Cash Equivalents [Member] U.S. government agency bonds US Treasury Bond Securities [Member] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Amortized cost Available-for-sale Securities, Amortized Cost Basis Gross unrealized gains Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax Gross unrealized losses Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax Fair value (net carrying amount) Available-for-sale Securities Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies [Table] Commitments And Contingencies [Table] Commitments and Contingencies [Table] Litigation Status [Axis] Litigation Status [Axis] Litigation Status [Domain] Litigation Status [Domain] Pending Litigation Pending Litigation [Member] Litigation Case [Axis] Litigation Case [Axis] Litigation Case [Domain] Litigation Case [Domain] Redemption Action and Counterclaim Redemption Action and Counterclaim [Member] Redemption Action and Counterclaim [Member] Derivative Claims Derivative Claims [Member] Derivative Claims [Member] Jurisdiction [Axis] Jurisdiction [Axis] Statutory Accounting Practices, Jurisdiction [Domain] Statutory Accounting Practices, Jurisdiction [Domain] United States District Court, District of Nevada United States District Court, District of Nevada [Member] United States District Court, District of Nevada [Member] Eighth Judicial District Court of Clark County, Nevada Eighth Judicial District Court of Clark County, Nevada [Member] Eighth Judicial District Court of Clark County, Nevada [Member] Payments For Leases By Third Parties [Axis] Payments For Leases By Third Parties [Axis] Payments for Leases by Third Parties [Axis] Payments For Leases By Third Parties [Domain] Payments For Leases By Third Parties [Domain] Payments for Leases by Third Parties [Domain] Cotai Development and Land Concession Contract Cotai Development And Land Concession Contract [Member] Cotai Development And Land Concession Contract [Member] Pre Construction Completion Payments Pre Construction Completion Payments [Member] Pre Construction Completion Payments [Member] Post Construction Completion Payments Post Construction Completion Payments [Member] Post Construction Completion Payments [Member] Contract Termination [Axis] Contract Termination [Axis] Contract Termination [Axis] Contract Termination [Domain] Contract Termination [Domain] Contract Termination [Domain] Directors Director [Member] Wynn Palace Wynn Palace [Member] Wynn Palace [Member] 2022 Indenture Two Thousand Twenty Two Indenture [Member] Two Thousand Twenty Two Indenture [Member] 2023 Indenture Two Thousand Twenty Three Indenture [Member] Two Thousand Twenty Three Indenture [Member] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Guarantee Obligations Guarantee Obligations [Member] Commitments and Contingencies [Line Items] Commitments And Contingencies [Line Items] Commitments And Contingencies [Line Items] Number of rooms in hotel Number Of Rooms In Hotel Number Of Rooms In Hotel Quantity of land acquired (acres) Quantity Of Land Acquired Quantity of land acquired Land concession contract period (years) Land Concession Contract Period Land concession contract period Total land premium payable Total Land Premium Payable Total land premium payable Down payment of premium Down Payment Of Premium Down payment of premium Number of additional semi-annual payments Number Of Installments Number of Installments Individual semi-annual payment of premium (8 total) Semi Annual Payment Of Premium Semi Annual Payment Of Premium Rate of interest on premium Rate Of Interest On Premium Rate Of Interest On Premium Land premium payment obligation, current Land Premium Payment Obligation Current Land premium payment obligation current. Land premium payment obligation, noncurrent Land Premium Payment Obligation Non Current Land premium payment obligation non current. Annual lease payments Additional Land Lease Payments Additional land lease payments. Guaranteed maximum price of contract Guaranteed Maximum Construction Price Guaranteed maximum construction price Bond as a percentage of guaranteed maximum price Performance Bond Rate Percentage of the guaranteed maximum price which the performance bond is for. Project costs incurred Project Costs Incurred Project costs incurred Project budget Estimated Cost Of Project Estimated Cost Of Project Percentage of shares voted in favor of removal of Mr. Okada Percentage Of Voting In Favor Of Removal Percentage Of Voting In Favor Of Removal Of Director Number of voted shares (over 86 mil) Common Stock Number Of Votes Common Stock Number Of Votes Common stock redeemed, shares Stock Redeemed or Called During Period, Shares Redemption price promissory note, principal amount Period for an offer to repurchase notes after a change of control Debt Instrument, Call Period, Change of Control and Subsequent Credit Rating Condition Debt Instrument, Call Period, Change of Control and Subsequent Credit Rating Condition Debt purchase price percentage of aggregate principal amount Debt Purchase Price Percent Of Principal Amount Debt Purchase Price Percent Of Principal Amount Interest payment due Interest Expense, Long-term Debt Interim status update period Loss Contingency, Interim Status Update Period Loss Contingency, Interim Status Update Period Period for a stay of derivative action Loss Contingency, Period of Stay Loss Contingency, Period of Stay Number of derivative actions commenced in the U.S. District Court Loss Contingency, New Claims Filed, Number Period after dismissal of claim to file an amended complaint Loss Contingency, Period to Complete Court-Mandated Actions After Stay Loss Contingency, Period to Complete Court-Mandated Actions After Stay Statement of Financial Position [Abstract] ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Restricted Cash Restricted Cash and Cash Equivalents, Current Investment securities Short-term Investments Receivables, net Receivables, Net, Current Inventories Inventory, Net Prepaid expenses and other Prepaid Expense and Other Assets, Current Total current assets Assets, Current Property and equipment, net Property, Plant and Equipment, Net Restricted Cash Restricted Cash and Cash Equivalents, Noncurrent Investment securities Marketable Securities, Noncurrent Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Deferred financing costs, net Deferred Finance Costs, Noncurrent, Net Deposits and other assets Other Assets, Noncurrent Investment in unconsolidated affiliates Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Total assets Assets LIABILITIES AND STOCKHOLDERS’ EQUITY (DEFICIT) Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts and construction payables Accounts Payable, Current Current portion of long-term debt Current portion of land concession obligation Customer deposits Customer Deposits, Current Gaming taxes payable Gaming Taxes Payable Current 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 operation, subject to applicable jurisdictional adjustments. Accrued compensation and benefits Employee-related Liabilities, Current Accrued interest Interest Payable, Current Other accrued liabilities Other Accrued Liabilities, Current Deferred income taxes, net Deferred Tax Liabilities, Net, Current Total current liabilities Liabilities, Current Long-term debt Land concession obligation Other long-term liabilities Other Liabilities, Noncurrent Deferred income taxes, net Deferred Tax Liabilities, Net, Noncurrent Total liabilities Liabilities Commitments and contingencies (Note 14) Commitments and Contingencies Stockholders’ equity (deficit): Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Preferred stock, par value $0.01; 40,000,000 shares authorized; zero shares issued and outstanding Preferred Stock, Value, Issued Common stock, par value $0.01; 400,000,000 shares authorized; 114,559,019 and 114,426,960 shares issued; 101,524,590 and 101,439,297 shares outstanding, respectively Common Stock, Value, Issued Treasury stock, at cost; 13,034,429 and 12,987,663 shares, respectively Treasury Stock, Value Additional paid-in capital Additional Paid in Capital Accumulated other comprehensive income (Accumulated deficit) retained earnings Retained Earnings (Accumulated Deficit) Total Wynn Resorts, Limited stockholders’ deficit Stockholders' Equity Attributable to Parent Noncontrolling interest Stockholders' Equity Attributable to Noncontrolling Interest Total equity (deficit) Total liabilities and stockholders’ equity (deficit) Liabilities and Equity Earnings Per Share [Abstract] Earnings Per Share Earnings Per Share [Text Block] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Numerator: Net Income (Loss) Available Common Stockholders, Basic And Diluted [Abstract] Net Income (Loss) Available Common Stockholders, Basic And Diluted [Abstract] Net income (loss) attributable to Wynn Resorts, Limited Net Income (Loss) Attributable to Parent Denominator: Weighted Average Number Of Shares Outstanding, Basic And Diluted [Abstract] Weighted Average Number Of Shares Outstanding, Basic And Diluted [Abstract] Weighted average common shares outstanding (shares) Weighted Average Number of Shares Outstanding, Basic Potential dilutive effect of stock options and restricted stock (shares) Weighted Average Number Diluted Shares Outstanding Adjustment Weighted average common and common equivalent shares outstanding (shares) Weighted Average Number of Shares Outstanding, Diluted Net income attributable to Wynn Resorts, Ltd. per common share, basic (in dollars per share) Earnings Per Share, Basic Net income attributable to Wynn Resorts, Ltd. per common share, diluted (in dollars per share) Earnings Per Share, Diluted Antidilutive securities excluded from computation of earnings per share (shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Investment Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Summary of Receivables, Net Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Scenario, Forecast [Member] Scenario, Forecast [Member] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Las Vegas Wynn Las Vegas [Member] Wynn Las Vegas [Member] Lease Agreement Lease Agreement [Axis] Lease Agreement [Axis] Lease Agreement [Domain] Lease Agreement [Domain] Lease Agreement [Domain] SW Lease S W Lease [Member] S W Lease [Member] Property Subject to or Available for Operating Lease [Axis] Property Subject to or Available for Operating Lease [Axis] Property Subject to or Available for Operating Lease [Domain] Property Subject to or Available for Operating Lease [Domain] Lease agreements [Member] Lease agreement [Member] Lease agreement [Member] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Annual credit for personal usage of aircraft Annual credit for personal use aircraft Annual credit of which Mr. Wynn will not be required to reimburse the Company for the aggregate incremental costs of certain flights pursuant to time sharing agreement. Amount due to officers and directors Due to Officers or Stockholders Operating Leases, Income Statement, Monthly Lease Revenue Operating Leases, Income Statement, Annual Lease Revenue Operating Leases, Income Statement, Annual Lease Revenue Rental Property, Valuation Frequency Rental Property, Valuation Frequency Rental Property, Valuation Frequency Area of land (in acres) Area of Land Term of notice required to exercise option Notice Period To Exercise Aircraft Purchase Option Number Of Days Written Notice Required To Exercise Aircraft Purchase Option. Agreement expiration Employment Agreement Expiration Date Employment Agreement Expiration Date Surname Rights Agreement Expiration Date Surname Rights Agreement Expiration Date Surname Rights Agreement Expiration Date Accumulated Other Comprehensive Income Comprehensive Income (Loss) Note [Text Block] Stock-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Schedule of Shares used in Calculation of Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Legal Entity of Counterparty, Type Legal Entity of Counterparty, Type [Axis] Legal Entity Type of Counterparty [Domain] Legal Entity Type of Counterparty [Domain] Hotel Hotel [Member] Retail leases and other Retail Leases And Other [Member] Retail Leases And Other [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Receivables, gross Accounts Receivable, Gross, Current Less: allowance for doubtful accounts Allowance for Doubtful Accounts Receivable, Current Receivables, net Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Macau MACAU Other Macau Other Macau [Member] Other Macau [Member] Las Vegas Operations Corporate and other Corporate and Other [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Assets Schedule of Investment Securities Available-for-sale Securities [Table Text Block] Investments by Contractual Maturity Date Investments Classified by Contractual Maturity Date [Table Text Block] Segment Information Segment Reporting Disclosure [Text Block] Statement of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income (loss) to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Deferred income taxes Deferred Income Tax Expense (Benefit) Excess tax benefits from stock-based compensation Excess Tax Benefit from Share-based Compensation, Operating Activities Amortization and write-offs of deferred financing costs and other Amortization Of Deferred Financing Costs Amortization and or write-offs 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. Loss on extinguishment of debt Losses On Extinguishment Of Debt Amount represents (1) the difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity and/or (2) the write-off of amounts capitalized as deferred financing costs associated with the extinguishment prior to maturity. Provision (benefit) for doubtful accounts Provision for Doubtful Accounts Property charges and other Noncash Project Abandonment Costs Equity in income of unconsolidated affiliates, net of distributions Income (Loss) from Equity Method Investments, Net of Dividends or Distributions Decrease (increase) in swap fair value Unrealized Gain (Loss) on Derivatives Increase (decrease) in cash from changes in: Increase (Decrease) in Operating Capital [Abstract] Receivables, net Increase (Decrease) in Receivables Inventories and prepaid expenses and other Increase Decrease In Inventories Prepaid Expenses And Other Current Assets The net change during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities, the net change during the reporting period in the amount of outstanding money paid in advance for goods or services that bring economic benefits for future periods and the net change during the reporting period in other operating assets not otherwise defined in the taxonomy. Customer deposits Increase (Decrease) in Customer Deposits Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Net cash (used in) provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Capital expenditures, net of construction payables and retention Payments to Acquire Property, Plant, and Equipment Purchase of investment securities Payments to Acquire Available-for-sale Securities, Debt Proceeds from sale or maturity of investment securities Proceeds from Sale and Maturity of Marketable Securities Restricted cash Increase (Decrease) in Restricted Cash Deposits and purchase of other assets Payments For Deposits And Other Assets Net cash inflow or (outflow) from other deposits and/or other assets not otherwise defined in the taxonomy. Proceeds from sale of assets Proceeds from Sale of Productive Assets Net cash (used in) provided by investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from exercise of stock options Proceeds from Stock Options Exercised Excess tax benefits from stock-based compensation Excess Tax Benefit from Share-based Compensation, Financing Activities Dividends paid Payments of Dividends Proceeds from issuance of long-term debt Proceeds from Issuance of Long-term Debt Principal payments on long-term debt Repayments of Long-term Debt Repurchase of first mortgage notes Repurchase of First Mortgage Notes Cash outflows from repurchase of first mortgage notes Restricted cash Proceeds from (Repayments of) Restricted Cash, Financing Activities Repurchase of common stock Payments for Repurchase of Common Stock Payments for financing costs Payments of Debt Issuance Costs Net cash (used in) provided by financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate on cash Effect of Exchange Rate on Cash and Cash Equivalents Cash and cash equivalents: Cash and Cash Equivalents, Period Increase (Decrease) [Abstract] (Decrease) increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Balance, beginning of period Balance, end of period Supplemental cash flow disclosures: Supplemental Cash Flow Information [Abstract] Cash paid for interest, net of amounts capitalized Interest Paid, Net Non-cash transactions: Non-cash Transactions [Abstract] Non-cash Transactions [Abstract] Stock-based compensation capitalized into construction 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 Statement of Comprehensive Income [Abstract] Other comprehensive income: Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax [Abstract] Foreign currency translation adjustments, net of tax Unrealized gain on investment securities, net of tax Total comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Less: comprehensive income attributable to noncontrolling interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive income (loss) attributable to Wynn Resorts, Limited Comprehensive Income (Loss), Net of Tax, Attributable to Parent Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Declared cash dividend Dividends Payable, Amount Per Share Extinguishment of debt Extinguishment of Debt, Amount Debt redemption price as percentage of principal Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed Premium of redemption price expensed Extinguishment of Debt, Premium of Redemption Price Extinguishment of Debt, Premium of Redemption Price Unamortized financing costs and original issue discount Unamortized financing costs and original issue discount expensed with redemption Unamortized financing costs and original issue discount expensed with redemption Income Statement [Abstract] Operating revenues: Revenues [Abstract] Casino Casino Revenue Rooms Occupancy Revenue Food and beverage Food and Beverage Revenue Entertainment, retail and other Entertainment Retail And Other Revenue Revenue earned during the period from shows, retail outlets, convention space, spa, salon, wedding salon, golf course and other. Gross revenues Gross Revenue 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. Less: promotional allowances Promotional Allowances Net revenues Revenue, Net Operating costs and expenses: Costs and Expenses [Abstract] Casino Casino Expenses Rooms Occupancy Costs Food and beverage Food and Beverage, Cost of Sales Entertainment, retail and other Entertainment Retail And Other Costs Costs incurred during the period related to generating revenue from shows, retail outlets, convention space, spa, salon, wedding salon, golf course, and other operations. General and administrative Selling, General and Administrative Expense Provision (benefit) for doubtful accounts Pre-opening costs Pre-Opening Costs Total operating costs and expenses Costs and Expenses Operating income Operating Income (Loss) Other income (expense): Nonoperating Income (Expense) [Abstract] Interest income Investment Income, Interest Interest expense, net of amounts capitalized Interest Expense (Decrease) increase in swap fair value Gain (Loss) on Derivative Instruments, Net, Pretax Loss on extinguishment of debt Equity in income from unconsolidated affiliates Income (Loss) from Equity Method Investments Other Other Nonoperating Income (Expense) Other income (expense), net Nonoperating Income (Expense) Income (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Provision for income taxes Income Tax Expense (Benefit) Net income (loss) Less: net income attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Net income (loss) attributable to Wynn Resorts, Limited Basic and diluted income (loss) per common share: Earnings Per Share, Basic and Diluted [Abstract] Net income (loss) attributable to Wynn Resorts, Limited: Basic (in dollars per share) Diluted (in dollars per share) Weighted average common shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Diluted (in shares) Dividends declared per common share (in dollars per share) Common Stock, Dividends, Per Share, Declared Document And Entity Information [Abstract] Document And Entity Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Trading Symbol Trading Symbol (Provision) benefit for income taxes Excess tax deductions associated with stock compensation costs Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Amount Length of second tax exemption period Tax Exemption Period Tax Exemption Period Complementary tax exemption Amount Of Complementary Tax Exemption Amount of complementary tax exemption Gaming tax Special Gaming Tax On Gross Revenue Special Gaming Tax On Gross Revenue Accounting Policies [Abstract] Summary of Estimated Cost of Promotional Allowances Summary Of Estimated Cost Of Promotional Allowance [Table Text Block] Summary of estimated cost of promotional allowance. Schedule of Assets and Liabilities Carried at Fair Value Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Noncontrolling Interest [Abstract] Noncontrolling Interest Noncontrolling Interest Disclosure [Text Block] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Hierarchy Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Quoted Market Prices in Active Markets (Level 1) Fair Value, Inputs, Level 1 [Member] Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] 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] Assets: Assets, Fair Value Disclosure [Abstract] Cash equivalents Cash Equivalents, at Carrying Value Interest rate swaps Restricted cash Restricted Cash and Cash Equivalents Available-for-sale securities Liabilities: Liabilities, Fair Value Disclosure [Abstract] Redemption Note Debt Instrument, Fair Value Disclosure Property and Equipment, net Property, Plant and Equipment Disclosure [Text Block] Subsequent Events Subsequent Events [Text Block] Noncontrolling Interest [Table] Noncontrolling Interest [Table] Wynn Macau, Limited Wynn Macau, Limited [Member] Wynn Macau, Limited [Member] Noncontrolling Interest [Line Items] Noncontrolling Interest [Line Items] Dividends paid (HKD per share) Common Stock, Dividends, Per Share, Cash Paid Dividends paid Dividends, Common Stock Dividends paid to Wynn Resorts Proceeds from Dividends Received Reduction to noncontrolling interest Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Changes by Component in Accumulated Other Comprehensive Income Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Organization Consolidation And Presentation Of Financial Statements Disclosure [Table] Organization, Consolidation and Presentation of Financial Statements Disclosure [Table] Meeting and convention Inperson Committee Meeting [Member] In-person Committee Meeting [Member] Retail Retail [Member] Retail [Member] Salon and Spa Salon And Spa [Member] Salon And Spa [Member] Pool Pool [Member] Pool [Member] Showrooms Showrooms [Member] Showrooms [Member] Nightclubs Nightclubs [Member] Nightclubs [Member] Organization and Basis of Presentation [Line Items] Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] Organization and Basis of Presentation [Abstract] Percentage of ownership Noncontrolling Interest, Ownership Percentage by Parent Number of hotel Number Of Hotel Towers Number of Hotel Towers Area of property Functional Area Square Footage Functional Area Square Footage. Number of restaurants Number of Restaurants Number of facilities Number Of Facilities Number of Facilities Number of outlets Number Of Food And Beverage Outlets Number Of Food And Beverage Outlets. Number of showrooms Number Of Showrooms Number of Showrooms. Wynn America Wynn America [Member] Wynn America [Member] Amended Wynn Macau Credit Facility Amended Wynn Macau Credit Facility [Member] Amended Wynn Macau Credit Facility [Member] Wynn America Credit Facilities Wynn America Credit Facilities [Member] Wynn America Credit Facilities [Member] Senior Secured Revolving Credit Facility Senior Secured Revolving Credit Facility [Member] Senior Secured Revolving Credit Facility [Member] Lender Name [Axis] Lender Name [Axis] Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Amended Wynn Macau Credit Facilities Amended Credit Facility [Member] Amended Credit Facility [Member] Long-term line of credit Long-term Line of Credit Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Current borrowing capacity Line of Credit Facility, Current Borrowing Capacity Principal amount for cash tender price Principal Amount For Cash Tender Price Principal Amount For Cash Tender Price Tender offer consideration in cash tender offer. TenderOfferConsiderationInCashTenderOffer. Cash tender offer consideration received by note holder per stated principal amount owed to note holder. Principal amount for cash tender price wynn_PrincipalAmountForCashTenderPrice Principal Amount For Cash Tender Price Losses on extinguishment of debt Gains (Losses) on Extinguishment of Debt Debt instrument, aggregate principal amount Debt issuance cost Debt Issuance Cost Percentage of principal repayment on the event of change of control Percentage Of Principal Repayment On Event Of Change Of Control Percentage Of Principal Repayment On Event Of Change Of Control Letters of credit outstanding Letters of Credit Outstanding, Amount Fair value, excluding the redemption note Debt Instrument, Fair Value, Excluding The Redemption Note Debt Instrument, Fair Value, Excluding The Redemption Note Long term debt excluding redemption note Long Term Debt Excluding Redemption Note Long Term Debt Excluding Redemption Note Interest Rate Swaps Derivative Instruments and Hedging Activities Disclosure [Text Block] Promotional Allowance [Table] Promotional Allowance [Table] Promotional Allowance [Table] Promotional Allowances Promotional Allowances [Axis] Promotional Allowances [Axis] Promotional Allowances [Domain] Promotional Allowances [Domain] Promotional Allowances [Domain] Promotional Allowances [Line Items] Promotional Allowance [Line Items] Promotional Allowance [Line Items] 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 Expenses Land and improvements Land Buildings and improvements Buildings and Improvements, Gross Airplanes Flight Equipment Owned, Gross Furniture, fixtures and equipment Furniture and Fixtures, Gross Leasehold interests in land Leasehold Interest In Land Gross Leasehold interest in land, gross Construction in progress Construction in Progress, Gross Property and equipment, gross Property, Plant and Equipment, Gross Less: accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property and equipment, net Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Investment Securities Marketable Securities, Policy [Policy Text Block] Accounts Receivable and Credit Risk Trade and Other Accounts Receivable, Policy [Policy Text Block] Redemption Price Promissory Note Redemption Price Promissory Note Policy [Policy Text Block] Redemption Price Promissory Note [Policy Text Block] Revenue Recognition and Promotional Allowances Revenue Recognition, Policy [Policy Text Block] Gaming Taxes Gaming Taxes Policy [Policy Text Block] Gaming Taxes Policy Fair Value Measurements Fair Value of Financial Instruments, Policy [Policy Text Block] Recently Issued Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Preferred stock, par value (usd per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Common stock, par value (usd per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Common stock, shares outstanding Treasury stock, shares Treasury Stock, Shares Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Games Promoters in Macau Games Promoters in Macau [Member] Games Promoters in Macau [Member] Summary of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Percentage of ownership in joint ventures Equity Method Investment, Ownership Percentage Bank deposits and cash on hand Cash Percentage of credit markers due from customers residing outside of the United States Percentage Of Credit Markers Due From Customers Residing Outside Of United States Percentage of credit markers due from customers residing outside of the United States. Games promoters advances Games promoters advances Advanced Commissions to games promoters Commissions payable Commissions Payable Commissions payable to games promoters Gaming tax expenses Gaming Tax Expenses Gaming tax expense. Percentage of cash equivalents which are deposits held in foreign currencies Percentage Of Cash And Cash Equivalent Invested Percentage of Cash and Cash Equivalent Invested Net revenues Adjusted Property EBITDA Adjusted Property Ebitda 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 Other operating costs and expenses Other Operating Costs And Expenses [Abstract] Other Operating Costs and Expenses [Abstract] Corporate expenses and other Corporate Expenses And Other Corporate Expenses And Other Stock-based compensation expense Equity in income from unconsolidated affiliates Total Other Cost and Expense, Operating Non-operating income and expenses Other income (expense), net