Total stockholders' equity Beginning balance Ending balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Payments for financing costs Payment of related fees and expenses Payments of Debt Issuance Costs Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Stock-based compensation APIC, Share-based Payment Arrangement, Increase for Cost Recognition Total current liabilities Liabilities, Current Commitments and Contingencies [Line Items] Commitments And Contingencies [Line Items] Commitments And Contingencies [Line Items] Change in outstanding chips and front money deposits Increase Decrease in outstanding chips and front money deposits Increase Decrease in outstanding chips and front money deposits Change in loyalty program liabilities Change in loyalty program liabilities Change in loyalty program liabilities Preopening [Member] Preopening [Member] Preopening [Member] Treasury stock, shares Treasury Stock, Shares Debt redemption price as percentage of principal, redeemable from cash proceeds from equity offerings Debt Instrument, Redemption Price, Percentage, Redeemable From Cash Proceeds From Equity Offerings Debt Instrument, Redemption Price, Percentage, Redeemable From Cash Proceeds From Equity Offerings Complementary tax rate Complementary Tax Rate Complementary Tax Rate WML 5 1/2% Senior Notes, due 2027 Five And One Over Two Percentage Wynn Macau Limited Senior Notes Due October One Two Thousand Twenty Seven [Member] Five And One Over Two Percentage Wynn Macau Limited Senior Notes Due October One Two Thousand Twenty Seven [Member] Recently Issued and Adopted Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Cost of goods and services sold Cost of Goods and Services Sold Allowance for credit losses, percent of gross receivables Accounts Receivable, Allowance For Credit Loss, Percent Of Gross Receivables Accounts Receivable, Allowance For Credit Loss, Percent Of Gross Receivables Current Fiscal Year End Date Current Fiscal Year End Date Diluted (in shares) Weighted average common and common equivalent shares outstanding (shares) Weighted Average Number of Shares Outstanding, Diluted Entity Address, Postal Zip Code Entity Address, Postal Zip Code Issuance of restricted stock (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Summary of Operations by Segment Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Other Retail Leases And Other [Member] Retail Leases And Other [Member] Long-term debt excluding the Redemption Note Long Term Debt Excluding Redemption Note Long Term Debt Excluding Redemption Note Less: Unamortized debt issuance costs and original issue discounts and premium, net Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Property and equipment, net Property and equipment, net Property, Plant and Equipment, Net Term Loan Medium-term Notes [Member] LIBOR London Interbank Offered Rate (LIBOR) [Member] Accumulated other comprehensive loss AOCI Attributable to Parent [Member] Interest in addition to variable rate Debt Instrument, Basis Spread on Variable Rate Total assets Assets Assets Entity Shell Company Entity Shell Company Cover page. Cover [Abstract] Document Type Document Type Subsidiaries Subsidiaries [Member] Cash equivalents Cash Equivalents, at Carrying Value 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] Variable Rate [Domain] Variable Rate [Domain] Repayments of long-term debt Repayments of Long-term Debt Shares repurchased by the Company and held as treasury shares (in shares) Treasury Stock, Shares, Acquired Third Fiscal Quarter of the Financial Covenant Increase Period Third Fiscal Quarter Of The Financial Covenant Increase Period [Member] Third Fiscal Quarter Of The Financial Covenant Increase Period Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Share-based Payment Arrangement [Abstract] General and Administrative Expense General and Administrative Expense [Member] Current liabilities: Liabilities, Current [Abstract] Retail Retail [Member] Segment Information Segment Reporting Disclosure [Text Block] Equity [Abstract] Equity [Abstract] Total stock-based compensation capitalized Share-based Payment Arrangement, Amount Capitalized Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Available borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Document Quarterly Report Document Quarterly Report Commitments and contingencies (Note 14) Commitments and Contingencies Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Balance, beginning of period Balance, end of period Total cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Loss on extinguishment of debt Loss on extinguishment of debt Gain (Loss) on Extinguishment of Debt Debt Instrument [Line Items] Debt Instrument [Line Items] Consolidation Items [Domain] Consolidation Items [Domain] Each Subsequent Fiscal Quarter Thereafter of the Financial Covenant Increase Period Fourth Fiscal Quarter And Thereafter Of The Financial Covenant Increase Period [Member] Fourth Fiscal Quarter And Thereafter Of The Financial Covenant Increase Period Total other operating expenses Other Cost and Expense, Operating Land and improvements Land and Land Improvements WRF 5 1/8% Senior Notes, due 2029 Five and One Over Eight Percentage Senior Notes, Due 2029 [Member] Five and One Over Eight Percentage Senior Notes, Due 2029 Entity File Number Entity File Number Basic and diluted net income (loss) per common share: Earnings Per Share, Basic and Diluted [Abstract] Treasury stock Treasury Stock [Member] Wynn Macau Credit Facilities [Member] Wynn Macau Credit Facilities [Member] Wynn Macau Credit Facilities Segments [Axis] Segments [Axis] Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] 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Notes, due 2029 Five and One Over Eight Percentage Wynn Macau Limited Senior Notes Due Two Thousand Twenty Nine [Member] Five and One Over Eight Percentage Wynn Macau Limited Senior Notes Due Two Thousand Twenty Nine Local Phone Number Local Phone Number Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Schedule of Property and Equipment, Net Property, Plant and Equipment [Table Text Block] Cash Cash Proceeds from sale of assets and other Proceeds from Sale of Productive Assets Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Other income (expense), net Total other non-operating income and expenses Nonoperating Income (Expense) Additional paid-in capital Additional Paid in Capital Long-Term Debt Long-term Debt [Text Block] Share Based Compensation Allocated Costs Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Organization Consolidation And Presentation Of Financial Statements Disclosure [Table] Organization Consolidation And Presentation Of Financial Statements Disclosure [Table] Organization, Consolidation and Presentation of Financial Statements Disclosure [Table] Prepaid expenses and other Prepaid Expense and Other Assets, Current Exercise of stock options (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Less: comprehensive (income) loss attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Outstanding letters of credit Letters of Credit Outstanding, Amount Wynn/CA Plaza Property Owner, LLC And Wynn/CA Property Owner, LLC (The Borrowers) Wynn/CA Plaza Property Owner, LLC And Wynn/CA Property Owner, LLC [Member] Wynn/CA Plaza Property Owner, LLC And Wynn/CA Property Owner, LLC [Member] Total current assets Assets, Current Entity Current Reporting Status Entity Current Reporting Status Increase (decrease) in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Net income (loss) attributable to Wynn Resorts, Limited Net income (loss) attributable to Wynn Resorts, Limited Net Income (Loss) Attributable to Parent Proceeds from exercise of stock options Proceeds from Stock Options Exercised Liabilities: Liabilities, Fair Value Disclosure [Abstract] Common stock Common Stock [Member] Current assets: Assets, Current [Abstract] Leases [Abstract] Leases [Abstract] Receivables, net Increase (Decrease) in Receivables Debt Instrument [Axis] Debt Instrument [Axis] Accounts receivable, net of allowance for credit losses of $88,319 and $39,317 Receivables, net Receivables, Net, Current Redemption Period One Debt Instrument, Redemption, Period One [Member] Wynn Palace and Wynn Macau Wynn Palace and Wynn Macau [Member] Wynn Palace and Wynn Macau [Member] Net income (loss) Net income (loss) Net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Product and Service [Axis] Product and Service [Axis] Entity Small Business Entity Small Business Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Entity Filer Category Entity Filer Category Numerator: Net Income (Loss) Available Common Stockholders, Basic And Diluted [Abstract] Net Income (Loss) Available Common Stockholders, Basic And Diluted [Abstract] Minimum number of consecutive days Debt Instrument, Covenant, Required Redemption, Minimum Consecutive Period Debt Instrument, Covenant, Required Redemption, Minimum Consecutive Period Other accrued liabilities Other Accrued Liabilities, Current Stock-based compensation expense Share-based Payment Arrangement, Expense Change in advanced room deposits and ticket sales Change in advanced room deposits and ticket sales Change in advanced room deposits and ticket sales Total liabilities and stockholders' equity Liabilities and Equity Entity Address, City or Town Entity Address, City or Town Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Other Macau Other Macau [Member] Other Macau [Member] Incremental compensation cost recognized in connection with vesting of restricted stock awards Restricted Stock or Unit Expense Percentage of markers due from customers Concentration Risk, Percentage Wynn Macau Revolver, due 2022 Senior Revolving Credit Facility, due 2022 Senior Revolving Credit Facility, Due 2022 [Member] Senior Revolving Credit Facility, Due 2022 [Member] Current portion of long-term debt Less: Current portion of long-term debt Long-term Debt, Current Maturities Long-term operating lease liabilities Operating Lease, Liability, Noncurrent Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Preferred stock, shares authorized Preferred 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Method Investments [Table] Schedule of Equity Method Investments [Table] Operating expenses: Costs and Expenses [Abstract] Less: net (income) loss attributable to noncontrolling interests Net (income) loss attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax During Financial Covenant Relief Period During Financial Covenant Relief Period [Member] During Financial Covenant Relief Period Geographical [Axis] Geographical [Axis] Retained earnings (accumulated deficit) Retained Earnings [Member] Amortization of debt issuance costs Amortization of Debt Issuance Costs Change in total customer contract liabilities Change in total customer contract liabilities Change in total customer contract liabilities Document Period End Date Document Period End Date Statement [Table] Statement [Table] Entity Registrant Name Entity Registrant Name Dividends paid Payments of Dividends Schedule of Assets and Liabilities Carried at Fair Value Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Material Adverse Effect Debt Instrument, Redemption, Period Five [Member] Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Furniture, fixtures and equipment Furniture and Fixtures, Gross Maximum Maximum [Member] Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Receivables [Abstract] Receivables [Abstract] Schedule of Share-based Compensation, Allocation of Recognized Period Costs [Table] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Ownership [Axis] Ownership [Axis] Net proceeds received from settlement agreement becoming effective and final Proceeds from Legal Settlements Outside the United States, primarily Asia Asia [Member] Schedule of Receivables, net Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Retained earnings (accumulated deficit) Retained Earnings (Accumulated Deficit) Repurchase of common stock Payments for Repurchase of Common Stock Rooms Rooms [Member] Rooms [Member] Entity Tax Identification Number Entity Tax Identification Number Commitments and Contingencies [Table] Commitments And Contingencies [Table] Commitments and Contingencies [Table] Debt instrument, face amount Debt Instrument, Face Amount WLV 5 1/4% Senior Notes, due 2027 Five and One Over Four Percentage Senior Notes, Due May 15, 2027 [Member] Five and One Over Four Percentage Senior Notes, Due May 15, 2027 Diluted (in usd per share) Net income attributable to Wynn Resorts, Ltd. per common share, diluted (in usd per share) Earnings Per Share, Diluted Stockholders' equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Casino outstanding chips and front money deposits Casino outstanding chips and front money deposits Casino outstanding chips and front money deposits Trading Symbol Trading Symbol Minimum Minimum [Member] Cash dividends declared Cash dividends Dividends, Cash Noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest Accounts Receivable Accounts Receivable [Policy Text Block] Macau Operations Macau Operations [Domain] Macau Operations [Domain] Schedule of Restricted Cash and Cash Equivalents Restrictions on Cash and Cash Equivalents [Table Text Block] Foreign currency translation adjustments, before and after tax Currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Legal Entity [Axis] Legal Entity [Axis] Deferred income taxes Deferred Income Tax Expense (Benefit) Statistical Measurement [Domain] Statistical Measurement [Domain] Adjustments to reconcile net income (loss) to net cash (used in) provided by operating 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Loyalty program liabilities Loyalty programs Loyalty programs Corporate and other Corporate and Other [Member] Gain Contingencies, Nature [Axis] Gain Contingencies, Nature [Axis] Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate Accounts Receivable, Allowance For Credit Loss, Effect Of Exchange Rate Accounts Receivable, Allowance For Credit Loss, Effect Of Exchange Rate Payment default classification period for interest payment Payment Default Classification Period For Interest Payment Payment Default Classification Period For Interest Payment Entity [Domain] Entity [Domain] (Provision) benefit for income taxes Income tax expense (benefit) Income Tax Expense (Benefit) Stock-Based Compensation Share-based Payment Arrangement [Text Block] WRF Revolver, due 2024 Senior Revolving Credit Facility, Due 2024 [Member] Senior Revolving Credit Facility, Due 2024 [Member] Other long-term liabilities Other Liabilities, Noncurrent Unusual or Infrequent Item, or Both [Axis] Unusual or Infrequent Item, or Both [Axis] City Area Code City Area Code Accrual of net expense related to commitment to pay salary, tips and benefits continuation for all U.S. employees Employee-related Liabilities Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Title of 12(b) Security Title of 12(b) Security Counterparty Name [Axis] Counterparty Name [Axis] Hotel Hotel [Member] Net income (loss) attributable to Wynn Resorts, Limited: Earnings Per Share [Abstract] Fair Value, Hierarchy Fair Value Hierarchy and NAV [Axis] WRF Term Loan, due 2024 Senior Term Loan Facility, Due 2024 [Member] Senior Term Loan Facility, Due 2024 [Member] Distribution to noncontrolling interest Reduction to noncontrolling interest Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Deferred income taxes, net Deferred Income Tax Assets, Net WML 4 7/8% Senior Notes, due 2024 Four and Seven Over Eight Percentage Wynn Macau Limited Senior Notes Due October One Two Thousand Twenty Four [Member] Four and Seven Over Eight Percentage Wynn Macau Limited Senior Notes Due October One Two Thousand Twenty Four [Member] Interest rate during period Debt Instrument, Interest Rate During Period Cash, Cash Equivalents and Restricted Cash Cash and Cash Equivalents Disclosure [Text Block] Income (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Long-term debt, gross Long-term Debt, Gross ASSETS Assets [Abstract] Beginning balance (in shares) Ending balance (in shares) Shares, Outstanding Preferred stock, par value (usd per share) Preferred Stock, Par or Stated Value Per Share Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] WRF 7 3/4% Senior Notes, due 2025 Seven And Three Over Four Percentage WRF Senior Notes Due 2025 [Member] Seven And Three Over Four Percentage WRF Senior Notes Due 2025 Receivables, net Loans, Notes, Trade and Other Receivables, Excluding Allowance for Credit Losses [Text Block] Positive Outcome of Litigation Positive Outcome of Litigation [Member] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Total rental income Operating Lease, Lease Income Other income (expense): Other non-operating income and expenses Nonoperating Income (Expense) [Abstract] Inventories, 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. Potential dilutive effect of stock options and restricted stock (shares) Weighted Average Number Diluted Shares Outstanding Adjustment Cancellation of restricted stock Stock Issued During Period, Value, Restricted Stock Award, Forfeitures Corporate expenses and other Corporate Expenses And Other Corporate Expenses And Other Segment Reporting [Abstract] Segment Reporting [Abstract] Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction 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 Minimum rental income Operating Lease, Lease Income, Lease Payments Tax exemption period Tax Exemption Period Tax Exemption Period General and administrative General And Administrative [Member] General And Administrative [Member] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Schedule of Cash and Cash Equivalents Schedule of Cash and Cash Equivalents [Table Text Block] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Income Statement Location [Domain] Income Statement Location [Domain] Statistical Measurement [Axis] Statistical Measurement [Axis] Supplemental cash flow disclosures: Supplemental Cash Flow Information [Abstract] Total operating revenues Total operating revenues Revenue from Contract with Customer, Including Assessed Tax Second Fiscal Quarter of the Financial Covenant Increase Period Second Fiscal Quarter Of The Financial Covenant Increase Period [Member] Second Fiscal Quarter Of The Financial Covenant Increase Period Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Debt redemption price as percentage of principal Debt Instrument, Redemption Price, Percentage Cash and Cash Equivalents [Abstract] Cash and Cash Equivalents [Abstract] Change in derivatives fair value Gain (Loss) on Derivative Instruments, Net, Pretax Dividends and Noncontrolling Interest [Table] Noncontrolling Interest [Table] Company's share of dividend Proceeds from Dividends Received Write-offs Accounts Receivable, Allowance for Credit Loss, Writeoff Other operating expenses Other Operating Costs And Expenses [Abstract] Other Operating Costs and Expenses [Abstract] Common stock, shares authorized Common Stock, Shares Authorized Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Gain related to settlement agreement becoming effective and final, recognized as reduction of general and administrative expense Net gain related to derivative litigation settlement Gain (Loss) Related to Litigation Settlement Entity Central Index Key Entity Central Index Key Entity Emerging Growth Company Entity Emerging Growth Company Noncontrolling interests Noncontrolling Interest [Member] General and administrative Selling, General and Administrative Expense Encore Boston Harbor Encore Boston Harbor [Member] Encore Boston Harbor [Member] Derivative Litigation Derivative Litigation [Member] Derivative Litigation Senior Notes Senior Notes [Member] Debt Instrument, Covenant, Period In Effect [Axis] Debt Instrument, Covenant, Period In Effect [Axis] Debt Instrument, Covenant, Period In Effect Unusual or Infrequent Item, or Both [Domain] Unusual or Infrequent Item, or Both [Domain] Stock-based compensation Share-based Payment Arrangement, Noncash Expense Schedule of Shares used in Calculation of Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Distribution to noncontrolling interest Payments to Noncontrolling Interests Long-term debt Total long-term debt, net of current portion Long-term Debt, Excluding Current Maturities Assets: Assets, Fair Value Disclosure [Abstract] Effect of exchange rate on cash, cash equivalents and restricted cash Effect of Exchange Rate on Cash and Cash Equivalents Accrued compensation and benefits Employee-related Liabilities, Current Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Income Taxes Income Tax Disclosure [Text Block] Change of Control Debt Instrument, Redemption, Period Three [Member] Purchase of intangible and other assets Payments to Acquire Intangible Assets Percentage of ownership Noncontrolling Interest, Ownership Percentage by Parent Revenue Revenue Recognition [Text Block] Revenue Recognition [Text Block] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Preferred stock, shares issued Preferred Stock, Shares Issued LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity [Abstract] Summary of Assets by Segment Reconciliation of Assets from Segment to Consolidated [Table Text Block] Other assets Other Assets, Noncurrent Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] WLV 4 1/4% Senior Notes, due 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] Wynn Macau Term Loan, due 2022 Senior Term Loan Facility, due 2022 Senior Term Loan Facility, Due 2022 [Member] Senior Term Loan Facility, Due 2022 [Member] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Wynn Palace Wynn Palace [Member] Wynn Palace [Member] Legal Entity Type of Counterparty [Domain] Legal Entity Type of Counterparty [Domain] Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Change in or Amendment to Tax Laws or Tax Positions Debt Instrument, Redemption, Period Four [Member] Long-term debt total Long-term debt Long-term Debt Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Capital expenditures, net of construction payables and retention Payments to Acquire Property, Plant, and Equipment Proceeds from issuance of long-term debt Proceeds from Issuance of Long-term Debt Accrued interest Interest Payable, Current Amount of complementary tax exemption Amount Of Complementary Tax Exemption Amount of complementary tax exemption Recoveries of receivables previously written-off Accounts Receivable, Allowance for Credit Loss, Recovery Cash, cash equivalents and restricted cash: Cash and Cash Equivalents, Period Increase (Decrease) [Abstract] WLV 5 1/2% Senior Notes, due 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] Provision for credit losses Provision for credit losses Accounts Receivable, Credit Loss Expense (Reversal) Leases Lessor, Operating Leases [Text Block] Total Wynn Resorts, Ltd. stockholders' equity Parent [Member] Accounting Policies [Abstract] Accounting Policies [Abstract] Additional paid-in capital Additional Paid-in Capital [Member] Interest income Investment Income, Interest Schedule of Minimum and Contingent Operating Lease Income Operating Lease, Lease Income [Table Text Block] 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, expenses associated with business termination activities and other expenses. Cash dividend paid (usd per share) Common Stock, Dividends, Per Share, Cash Paid Receivables Accounts Receivable [Member] Issuance of restricted stock Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Gaming tax expenses Gaming Tax Expenses Gaming tax expense. Other comprehensive income (loss): Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax [Abstract] Entity Address, Address Line One Entity Address, Address Line One Property and equipment, gross Property, Plant and Equipment, Gross Geographical [Domain] Geographical [Domain] Nonrecurring regulatory expense Nonrecurring Regulatory Expense Nonrecurring Regulatory Expense Property and Equipment, net Property, Plant and Equipment Disclosure [Text Block] Retail Joint Venture Retail Joint Venture [Member] Retail Joint Venture [Member] Commitment to pay salary, tips, and benefits continuation for all U.S. employess for period from April 1 through May 15, 2020 COVID-19, Commitment To Pay Salary, Tips, And Benefits Continuation For U.S. Employees For Specified Period [Member] COVID-19, Commitment To Pay Salary, Tips, And Benefits Continuation For U.S. Employees For Specified Period Entity Address, State or Province Entity Address, State or Province Income Statement Location [Axis] Income Statement Location [Axis] Operating Segments Operating Segments [Member] Redemption percentage, redeemable from cash proceeds from equity offerings Debt Instrument, Redemption Percentage, Redeemable From Cash Proceeds From Equity Offerings, Maximum Debt Instrument, Redemption Percentage, Redeemable From Cash Proceeds From Equity Offerings, Maximum Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Accounts and construction payables Accounts Payable, Current Basis of Presentation and Significant Accounting Policies Significant Accounting Policies [Text Block] WML Wynn Macau, Limited [Member] Wynn Macau, Limited [Member] Food and beverage Food and beverage Food and Beverage [Member] Entity Interactive Data Current Entity Interactive Data Current Pre-opening Pre-Opening Costs Geographic Concentration Risk Geographic Concentration Risk [Member] Common stock, shares issued Common Stock, Shares, Issued Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Total operating expenses Costs and Expenses Common stock, par value (usd per share) Common Stock, Par or Stated Value Per Share Wynn Las Vegas Las Vegas Operations Wynn Las Vegas [Member] Wynn Las Vegas [Member] Property charges and other Property Charges and Other The expense charged against earnings to eliminate the capitalized cost of projects that have been terminated during the reporting period and other operating expenses, which are added back to net income when calculating cash provided by (used in) operations using the indirect method. Schedule of Variable Interest Entities [Line Items] Schedule of Equity Method Investments [Line Items] Inventories Inventory, Net Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Accounts and construction payables related to property and equipment Accounts Payable, Current, Amount Related to Property Plant and Equipment Accounts Payable, Current, Amount Related to Property Plant and Equipment Measurement Frequency Measurement Frequency [Axis] Buildings and improvements Buildings and Improvements, Gross Earnings Per Share Earnings Per Share [Text Block] Less: accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Entertainment, retail and other Entertainment, retail and other Entertainment Retail And Other [Member] Entertainment Retail And Other [Member] Redemption Period Two Debt Instrument, Redemption, Period Two [Member] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Senior Secured Revolving Credit Facility Revolving Credit Facility [Member] Pre-opening expenses excluded from stock-based compensation Pre-Opening Costs Excluded from Share-based Compensation Pre-Opening Costs Excluded from Share-based Compensation Minimum liquidity required to be maintained at all times during Financial Covenant Relief Period Debt Instrument, Covenant Terms, Minimum Liquidity Requirement Debt Instrument, Covenant Terms, Minimum Liquidity Requirement Ownership [Domain] Ownership [Domain] Event of default, option to accelerate amounts due, minimum percentage of aggregate principal amount of debt held Debt Instrument, Debt Default, Option to Accelerate Amounts Due, Minimum Percentage of Aggregate Principal Amount of Debt Held Debt Instrument, Debt Default, Option to Accelerate Amounts Due, Minimum Percentage of Aggregate Principal Amount of Debt Held Summary of Long-Term Debt Schedule of Long-term Debt Instruments [Table Text Block] Consolidated Entities [Axis] Consolidated Entities [Axis] WRF Wynn Resorts Finance, LLC [Member] Wynn Resorts Finance, LLC [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] Total liabilities Liabilities Liabilities Schedule of Customer Contract Liabilities Schedule of Customer Contract Liabilities [Table Text Block] [Table Text Block] for Schedule of Customer Contract Liabilities [Table] Common stock, par value $0.01; 400,000,000 shares authorized; 123,425,898 and 122,837,930 shares issued; 107,869,865 and 107,363,943 shares outstanding, respectively Common Stock, Value, Issued Counterparty Name [Domain] Counterparty Name [Domain] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Revenue Recognition [Abstract] Revenue Recognition [Abstract] Rooms Occupancy [Member] Reversal of compensation cost previously recognized for awards forfeited in connection with departure of employee Pension and Other Postretirement Benefits Expense (Reversal of Expense), Noncash Cash and cash equivalents Total cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Total customer contract liabilities Total Customer Contract Liabilities Total Customer Contract Liabilities Basic (in shares) Weighted average common shares outstanding (shares) Weighted Average Number of Shares Outstanding, Basic Operating lease assets Operating Lease, Right-of-Use Asset Construction in progress Construction in Progress, Gross 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. Equity Components [Axis] Equity Components [Axis] Total Wynn Resorts, Limited stockholders' equity Stockholders' Equity Attributable to Parent Concentration Risk Type [Domain] Concentration Risk Type [Domain] Fair value, excluding the redemption note Debt Instrument, Fair Value, Excluding The Redemption Note Debt Instrument, Fair Value, Excluding The Redemption Note Customer deposits Contract with Customer, Liability, Current Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Fair Value Measurements Fair Value Disclosures [Text Block] Gaming Taxes Gaming Taxes Policy [Policy Text Block] Gaming Taxes Policy Change in other gaming related liabilities Change in other gaming related liabilities Change in other gaming related liabilities Receivables, gross Accounts Receivable, before Allowance for Credit Loss, Current Cash paid for interest, net of amounts capitalized Interest Paid, Excluding Capitalized Interest, Operating Activities Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] Liability settled with shares of common stock Stock Issued Preferred stock, par value $0.01; 40,000,000 shares authorized; zero shares issued and outstanding Preferred Stock, Value, Issued Balance at beginning of year Balance at end of period Accounts Receivable, Allowance for Credit Loss Variable Rate [Axis] Variable Rate [Axis] Shares repurchased by the Company and held as treasury shares Treasury Stock, Value, Acquired, Cost Method Security Exchange Name Security Exchange Name Denominator: Weighted Average Number Of Shares Outstanding, Basic And Diluted [Abstract] Weighted Average Number Of Shares Outstanding, Basic And Diluted [Abstract] Antidilutive securities excluded from computation of earnings per share (shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Depreciation expense Depreciation Litigation Case [Axis] Litigation Case [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Total comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Advanced room deposits and ticket sales Advanced room deposits and ticket sales Advanced room deposits and ticket sales Net cash (used in) provided by operating activities Net Cash Provided by (Used in) Operating Activities Equity Component [Domain] Equity Component [Domain] Customer deposits Increase (Decrease) in Contract with Customer, Liability Document Transition Report Document Transition Report Debt issuance costs Debt Issuance Costs, Net Finance lease payment Finance Lease, Principal Payments First Fiscal Quarter of the Financial Covenant Increase Period First Fiscal Quarter Of The Financial Covenant Increase Period [Member] First Fiscal Quarter Of The Financial Covenant Increase Period Consolidated Entities [Domain] Consolidated Entities [Domain] Gain Contingency, Nature [Domain] Gain Contingency, Nature [Domain] Credit Agreement Line of Credit [Member] Allowance for Doubtful Accounts Receivable [Roll Forward] Accounts Receivable, Allowance for Credit Loss [Roll Forward] WML 5 1/2% Senior Notes, due 2026 Five And One Over Two Percentage Wynn Macau Limited Senior Notes Due Two Thousand Twenty Six [Member] Five And One Over Two Percentage Wynn Macau Limited Senior Notes Due Two Thousand Twenty Six Income Statement [Abstract] Income Statement [Abstract] WLV Wynn Las Vegas, LLC and Wynn Las Vegas Capital Corp [Member] Wynn Las Vegas, LLC and Wynn Las Vegas Capital Corp Macau MACAU Retail Joint Venture Variable Interest Entity Disclosure [Text Block] Other gaming related liabilities Other gaming related liabilities Other gaming related liabilities Retail Term Loan, due 2025 Retail Term Loan Agreement [Member] Retail Term Loan Agreement [Member]