Interest coverage ratio, minimum Interest Coverage Ratio Minimum Numerator Interest coverage ratio minimum numerator Weighted-average discount rate - Operating leases Operating Lease, Weighted Average Discount Rate, Percent Vested shares issued (in shares) Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Interest Expense Carryforwards Interest Expense Carryforwards [Member] Interest Expense Carryforwards Total current assets Assets, Current Derivative Financial Instruments Derivatives, Policy [Policy Text Block] Debt covenant, maximum leverage ratio Debt Instrument, Covenant Terms, Leverage Ratio Debt Instrument, Covenant Terms, Leverage Ratio Commitments and Contingencies Commitments And Contingencies [Line Items] Commitments And Contingencies [Line Items] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Total operating expenses Costs and Expenses 2023 Finance Lease, Liability, Payments, Due Year Four Issuance of common stock Stock Issued During Period, Value, New Issues Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Total undiscounted cash flows Finance Lease, Liability, Payments, Due Accounts and construction payables Accounts Payable, Current Change in loyalty program liabilities Change in loyalty program liabilities Change in loyalty program liabilities Capital Expenditures Schedule of Capital Expenditures [Table Text Block] Schedule of Capital Expenditures [Table Text Block] Guaranteed maximum construction price Guaranteed Maximum Construction Price Guaranteed maximum construction price LIBOR London Interbank Offered Rate (LIBOR) [Member] Complementary tax rate Complementary Tax Rate Complementary Tax Rate 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] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Current Fiscal Year End Date Current Fiscal Year End Date Multi-employer plan, period contributions Multiemployer Plan, Contributions by Employer Number of acres of undeveloped land leased Lessee, Operating Lease, Number of Acres of Undeveloped Land Lessee, Operating Lease, Number of Acres of Undeveloped Land Unrealized loss on investment securities Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Unrecognized tax benefits that would impact the effective tax rate if recognized Unrecognized Tax Benefits that Would Impact Effective Tax Rate Schedule of Assets and Liabilities Carried at Fair Value Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [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 Option Activity Share-based Compensation, Stock Options, Activity [Table Text Block] Operating revenues: Revenues [Abstract] Accrued interest Interest Payable, Current Variable Interest Entity Disclosure Variable Interest Entity Disclosure [Text Block] Diluted (in shares) Weighted average common and common equivalent shares outstanding (used in calculation of diluted earnings per share) Weighted Average Number of Shares Outstanding, Diluted Debt instrument, fair value Debt Instrument, Fair Value Disclosure Cover page. Document Type Document Type Customer deposits Increase (Decrease) in Contract with Customer, Liability Organization Consolidation And Presentation Of Financial Statements Disclosure Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] Deferred tax assets, net, non current Deferred Tax Assets, Net of Valuation Allowance, Noncurrent Amount of complementary tax exemption per share Amount Of Complementary Tax Exemption Per Share Amount of Complementary Tax Exemption Per Share Type of Adoption [Domain] Type of Adoption [Domain] Consolidated Entities [Axis] Consolidated Entities [Axis] Net book value of assets and liabilities transferred to Retail Joint Venture Real Estate Investments, Joint Ventures WRL 2002 Plan WRL 2002 Plan [Member] WRL 2002 Plan [Member] Subsidiary or Equity Method Investee, Sale of Stock by Subsidiary or Equity Investee [Table] Subsidiary or Equity Method Investee, Sale of Stock by Subsidiary or Equity Investee [Table] Schedule of Intangible Assets [Table] Schedule Of Intangible Assets [Table] Schedule of Intangible Assets [Table] Finite-Lived Intangible Assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Valuation Allowances and Reserves [Domain] SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] Amortization of debt issuance costs Amortization Of Deferred Financing Costs and Other 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. Matching contribution expenses Defined Contribution Plan, Cost Fully vested and expected to vest as of December 31, 2019 Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Comprehensive income attributable to Wynn Resorts, Limited Comprehensive Income (Loss), Net of Tax, Attributable to Parent Leasehold Interest in Land Leasehold Interest In Land [Member] Leasehold interest In Land [Member] 2019 Long-term Debt, Maturities, Repayments of Principal in Year Two Term of employment agreement Initial Term Of Employment Agreement Initial Term of Employment Agreement Maximum guarantee by Macau government Annual Fee Paid To Bank Annual Fee Paid To Bank Consolidation Items [Domain] Consolidation Items [Domain] Gaming tax Special Gaming Tax On Gross Revenue Special Gaming Tax On Gross Revenue Other Other Nonoperating Income (Expense) Expected dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Stock options granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Segments [Axis] Segments [Axis] Property and equipment acquired under capital lease Capital Lease Obligations Incurred Construction in progress Deferred Tax Assets, Construction in Progress Deferred Tax Assets, Construction in Progress 2021 Operating Leases, Future Minimum Payments, Due in Three Years Total minimum lease payments Capital Leases, Future Minimum Payments Due United States Income (Loss) from Continuing Operations before Income Taxes, Domestic WRF 5 1/8% Senior Notes, due 2029 2029 Notes Five and One Over Eight Percentage Senior Notes, Due 2029 [Member] Five and One Over Eight Percentage Senior Notes, Due 2029 Counterparty Name [Axis] Counterparty Name [Axis] Buildings and Improvements Buildings And Improvements [Member] Buildings And Improvements [Member] Amortization 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Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options Other-than-temporary impairment losses Other than Temporary Impairment Losses, Investments Percentage of markers due from customers Concentration Risk, Percentage Terms of lease contracts Lessor, Operating Lease, Term of Contract Stock-based compensation Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Lease Arrangement, Type [Axis] Lease Arrangement, Type [Axis] Weighted-average grant date fair value (in dollars per share) Granted Weighted average grant date fair value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Other Commitments [Axis] Other Commitments [Axis] Operating Lease, Right-of-Use Asset Operating leases Operating lease assets related to amount allocated to leasehold interests in land Operating Lease, Right-of-Use Asset Medium-term Notes Medium-term Notes [Member] Weighted-average remaining lease term - Operating leases Operating Lease, Weighted Average Remaining Lease Term Treasury stock, at cost (in shares) Treasury Stock, Shares Tax Credit Carryforward Expiry In 2020 Tax Credit Carryforward Expiry In Two Thousand Twenty [Member] Tax Credit Carryforward Expiry in Two Thousand Twenty [Member] Income Taxes Income Taxes [Line Items] Income Taxes [Line Items] Less: accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Total stockholders' equity Beginning balance Ending balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Financing costs included in accounts payable and other liabilities Debt Issuance Costs Incurred During Noncash or Partial Noncash Transaction Debt Covenant Components [Domain] Debt Covenant Components [Domain] [Domain] for Debt Covenant Components [Axis] 2020 Operating Leases, Future Minimum Payments, Due in Two Years Outside the United States, primarily Asia Asia [Member] Renewal terms of ground lease contracts Lessee, Operating Lease, Renewal Term Finite-Lived Intangible Assets by Major Class Finite-Lived Intangible Assets by Major Class [Axis] Non-current liabilities Lease, Liabilities, Noncurrent, Lessee [Abstract] Lease, Liabilities, Noncurrent, Lessee [Abstract] Additional paid-in capital Additional Paid in Capital Capital expenditures, net of construction payables and retention Capital expenditures Payments to Acquire Property, Plant, and Equipment Other liabilities related to intangible assets Intangible Assets, Other Liabilities Incurred Intangible Assets, Other Liabilities Incurred Disallowed interest carryforwards not subject to expiration Deferred Tax Asset, Disallowed Interest Expense Carryforwards, Not Subject to Expiration Deferred Tax Asset, Disallowed Interest Expense Carryforwards, Not Subject to Expiration Number of hotel towers Number Of Hotel Towers Number of Hotel Towers Forfeited or expired Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Schedule II- Valuation and Qualifying Accounts SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] Total Wynn Resorts,  Limited stockholders' equity Parent [Member] Other income (expense), net Nonoperating Income (Expense) Local Phone Number Local Phone Number Amortization each year 2020 through 2028 Annual Amortization, 2020 Through 2028 [Member] Annual Amortization, 2020 Through 2028 [Member] Debt Instrument, Unamortized Discount (Premium), Net Debt Instrument, Unamortized Discount (Premium), Net Principles of Consolidation Consolidation, Policy [Policy Text Block] Long-term debt total Long-term Debt Long-term Debt Other long-term liabilities Other Liabilities, Noncurrent Other Deferred Tax Liabilities, Other Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Amortization thereafter through 2037 Annual Amortization, 2029 Through 2037 [Member] Annual Amortization, 2029 Through 2037 [Member] Pre-Open Costs Pre-Open Costs [Member] Pre-Open Costs [Member] Fair Value, Inputs, Level 3 Fair Value, Inputs, Level 3 [Member] Total lease liabilities Liability associated with ground lease Operating Lease, Liability Potential dilution from the assumed exercise of stock options and nonvested stock Weighted Average Number Diluted Shares Outstanding Adjustment Restricted Stock Award Activity Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] Wynn/CA Plaza Property Owner, LLC And Wynn/CA Property Owner, LLC 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] Employee contribution percentage Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Contingent rental income Operating Leases, Income Statement, Contingent Revenue Unrecognized tax benefit increase resulting in tax settlements Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit Change in tax rate Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Current, Total Current Income Tax Expense (Benefit) Income before income taxes Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Receivables, inventories, accrued liabilities and other Deferred Tax Asset Receivable Inventories Accrued Liabilities And Other Deferred tax asset receivable inventories accrued liabilities and other Company's matching contribution percentage Defined Contribution Plan, Employer Matching Contribution, Percent of Match Thereafter Capital Leases, Future Minimum Payments Due Thereafter Stock based compensation costs Stock based compensation costs Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost Domestic Plan Domestic Plan [Member] Total Wynn Resorts, Limited stockholders' equity Stockholders' Equity Attributable to Parent WRL Term Loan I WRL Term Loan I [Member] WRL Term Loan I Net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Operating Lease, Liability, Noncurrent Operating leases Long-term lease liabilities Operating Lease, Liability, Noncurrent Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Assets: Assets, Fair Value Disclosure [Abstract] Treasury stock, at cost; 15,473,987 and 14,883,559 shares, respectively Treasury Stock, Value Numerator: Net Income (Loss) Available Common Stockholders, Basic And Diluted [Abstract] Net Income (Loss) Available Common Stockholders, Basic And Diluted [Abstract] Fully vested and expected to vest as of December 31, 2019 Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Original Share Option Plan Share Option Plan [Member] Share Option Plan [Member] Minimum number of consecutive days Debt Instrument, Covenant, Required Redemption, Minimum Consecutive Period Debt Instrument, Covenant, Required Redemption, Minimum Consecutive Period 2023 Other Commitment, Due in Fourth Year Change in advanced room deposits and ticket sales Change in advanced room deposits and ticket sales Change in advanced room deposits and ticket sales Purchase of intangible and other assets Payments For Intangible Assets And Other Assets Net cash inflow or (outflow) from intangible assets and/or other assets not otherwise defined in the taxonomy. Entity Address, City or Town Entity Address, City or Town Document Annual Report Document Annual Report Assets Leased to Others Assets Leased to Others [Member] Thereafter Ground lease payments due thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Five Senior Revolving Credit Facility, Due 2022 Senior Revolving Credit Facility, Due 2022 [Member] Senior Revolving Credit Facility, Due 2022 [Member] Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Distribution to noncontrolling interest Payments to Noncontrolling Interests Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Change of control Redemption period three Debt Instrument, Redemption, Period Three [Member] Exercisable as of December 31, 2019 Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Wynn Macau Wynn Resorts (Macau) [Member] Wynn Resorts (Macau) [Member] Geographical [Domain] Geographical [Domain] Basic (in shares) Weighted average common shares outstanding (used in calculation of basic earnings per share) Weighted Average Number of Shares Outstanding, Basic Concentration Risk Type [Axis] Concentration Risk Type [Axis] Weighted Average Remaining Contractual Term Share Based Compensation Arrangement By Share Based Payment Award Options Weighted Average Remaining Contractual Term [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Weighted Average Remaining Contractual Term [Abstract] Other Commitments [Domain] Other Commitments [Domain] Price per share (usd per share) Sale of Stock, Price Per Share Vesting period Defined Contribution Plan, Employer Matching Contribution, Vesting Period Defined Contribution Plan, Employer Matching Contribution, Vesting Period Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Construction in progress Construction in Progress, Gross Valuation Allowances and Reserves Type SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] Earnings Per Share Earnings Per Share [Text Block] Assets Lease, Assets, Lesse [Abstract] Lease, Assets, Lesse [Abstract] Provisions for Doubtful Accounts SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense Wynn Resorts Limited 2014 Omnibus Incentive Plan Wynn Resorts Limited 2014 Omnibus Incentive Plan [Member] Omnibus Plan Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Proceeds from the sale or maturity of investment securities Proceeds from Sale and Maturity of Marketable Securities Finite-lived intangible assets, net Finite-Lived Intangible Assets, Net Inventories Inventory, Policy [Policy Text Block] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Multiemployer Plan Name [Domain] Multiemployer Plan Name [Domain] Counterparty Name [Domain] Counterparty Name [Domain] Liability settled with shares of common stock Stock Issued Retained earnings Retained Earnings (Accumulated Deficit) Change in derivatives fair value Gain (Loss) on Derivative Instruments, Net, Pretax 2024 Finance Lease, Liability, Payments, Due Year Five Finance leases Short-term lease liabilities Finance Lease, Liability, Current Receivables, gross Accounts Receivable, Gross, Current Allowance for Doubtful Accounts SEC Schedule, 12-09, Allowance, Credit Loss [Member] Wynn America Wynn America [Member] Wynn America [Member] Number of restaurants Number of Restaurants Repurchase of common stock Payments for Repurchase of Common Stock Less: Amount representing interest Capital Leases, Future Minimum Payments, Interest Included in Payments 2021 Other Commitment, Due in Second Year Senior Notes Senior Notes [Member] Offering expenses Sale of Stock, Offering Expenses Sale of Stock, Offering Expenses Depreciation Depreciation Expiration period Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period 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 Net income attributable to Wynn Resorts, Limited: Earnings Per Share [Abstract] 2024 Other Commitment, Due in Fifth Year Retail Retail Site [Member] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Debt redemption price as percentage of principal Debt Instrument, Redemption Price, Percentage Terms of ground lease contracts Lessee, Operating Lease, Term of Contract Newly issued shares of common stock in registered public offering (shares) Sale of Stock, Number of Shares Issued in Transaction 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] Repatriation of foreign earnings Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Percent Debt Disclosure [Abstract] Debt Disclosure [Abstract] Rooms Rooms [Member] Rooms [Member] Stock-based compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost Long-term debt, gross Amount of term loan facility Long-term Debt, Gross Long-term Debt, Gross Entity Tax Identification Number Entity Tax Identification Number Commitments and Contingencies [Table] Commitments And Contingencies [Table] Commitments and Contingencies [Table] Interest rate during period on debt Debt Instrument, Interest Rate During Period Future amortization expense, 2020 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 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 Casino outstanding chips and front money deposits Casino outstanding chips and front money deposits Casino outstanding chips and front money deposits Stockholders' equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Share-Based Compensation Allocated Costs Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Receivables, net Loans, Notes, Trade and Other Receivables, Excluding Allowance for Credit Losses [Text Block] Trading Symbol Trading Symbol 2022 Operating Leases, Future Minimum Payments, Due in Four Years Amortization each year 2020 through 2096 Annual Amortization, 2020 Through 2096 [Member] Annual Amortization, 2020 Through 2096 [Member] Common stock, shares issued (in shares) Common Stock, Shares, Issued Balance-beginning of year Balance-end of year Unrecognized Tax Benefits Legal Entity [Axis] Legal Entity [Axis] 2019 Operating Leases, Future Minimum Payments Due, Next Twelve Months Variable lease cost Variable Lease, Cost Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Deferred Tax Liabilities, Gross, Noncurrent Deferred Tax Liabilities, Gross, Noncurrent Less: Unamortized debt issuance costs and original issue discounts and premium, net Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Class of Treasury Stock [Table] Class of Treasury Stock [Table] 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. Loyalty program liabilities Loyalty programs Loyalty programs Schedule Of Finite And Indefinite Lived Intangible Assets Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items] Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items] Stock Option Exercises from the Plans [Abstract] Stock Option Exercises from the Plans [Abstract] Stock Option Exercises From the Plans [Abstract] Income Statement Location [Axis] Income Statement Location [Axis] Bank Guarantee Reimbursement Agreement Bank Guarantee Reimbursement Agreement [Member] Bank Guarantee Reimbursement Agreement Conditional increase limit on line of credit Line of Credit Facility, Conditional, Increase Limit Line of Credit Facility, Conditional, Increase Limit ASSETS Assets [Abstract] Valuation and Qualifying Accounts [Abstract] SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] 5 3/8% Wynn Las Vegas 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] Director [Member] Related Party [Domain] City Area Code City Area Code Options Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Distribution to noncontrolling interest Decrease from distributions to noncontrolling interest Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Damages sought Loss Contingency, Damages Sought, Value Title of 12(b) Security Title of 12(b) Security Due from Joint Ventures, Noncurrent Due from Joint Ventures, Noncurrent Schedule of Operating Lease Maturity Analysis Lessee, Operating Lease, Liability, Maturity [Table Text Block] Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] Disallowed interest expense carryforward Deferred Tax Asset, Disallowed Interest Expense Carryforwards Deferred Tax Asset, Disallowed Interest Expense Carryforwards CPF System Central Provident Fund System [Member] Central Provident Fund System Interest rate swap notional amount Derivative Asset, Notional Amount Leasehold interests in land Leasehold Interest In Land Gross Leasehold interest in land, gross Corporate and Other Corporate and Other [Member] Equity, Class of Treasury Stock Equity, Class of Treasury Stock [Line Items] Granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Bank guarantee carrying amount Guarantor Obligations, Current Carrying Value Deferred, Total Total Deferred Income Tax Expense Benefit Federal And Foreign Total deferred income tax expense benefit federal and foreign Beginning balance Ending balance SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount Balance, beginning of period Balance, end of period Total cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents 2022 Ground lease payments due 2022 Lessee, Operating Lease, Liability, Payments, Due Year Three 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] Cash paid for amounts included in the measurement of lease liabilities: Cash Flow, Lessee [Abstract] Cash Flow, Lessee [Abstract] Property and equipment Deferred Tax Liabilities, Property, Plant and Equipment Dividends paid Payments of Dividends Minimum employee contribution percentage Defined Contribution Plan, Minimum Annual Contributions Per Employee, Percent Defined Contribution Plan, Minimum Annual Contributions Per Employee, Percent Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Area of land acquired Area Of Land, Acquired Area Of Land, Acquired Term of interest rate collar Derivative, Term of Contract Dividends declared per common share (usd per share) Common Stock, Dividends, Per Share, Declared Share-based Compensation Arrangement by Share-based Payment Award Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Retirement Plan Name [Axis] Retirement Plan Name [Axis] Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Land and improvements Land 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. Income taxes paid from sale of ownership interest in subsidiary Income Taxes Paid from Sale of Ownership Interest in Subsidiary Income taxes paid from a combination of transactions in which noncurrent assets are sold, which may include the sale of a business, an investment in an affiliate (including an equity method investee), property, plant and equipment and intangible assets. 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Less: net income attributable to noncontrolling interests Net income attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Expected amortization of associated intangible assets, each year 2020-2033 Finite-Lived Intangible Assets, Annual Amortization Expense, Excluding Final Year Finite-Lived Intangible Assets, Annual Amortization Expense, Excluding Final Year Property charges and other expenses excluded from stock-based compensation Property Charges and Other Expenses Excluded from Share-based Compensation Property Charges and Other Expenses Excluded from Share-based Compensation Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Total advertising costs Advertising Expense 2021 Ground lease payments due 2021 Lessee, Operating Lease, Liability, Payments, Due Year Two Cash and Cash Equivalents [Abstract] Cash and Cash Equivalents [Abstract] Legal Entity of Counterparty, Type [Axis] Legal Entity of Counterparty, Type [Axis] Debt Instrument, Maturity Date Redemption price promissory note, maturity date Debt Instrument, Maturity Date Debt Covenant Components [Axis] Debt Covenant Components [Axis] Debt Covenant Components [Axis] Authorized amount under repurchase program Stock Repurchase Program, Authorized Amount Aruze USA, Inc. Aruze United States Of America Inc [Member] Aruze United States Of America Inc [Member] Less: accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Foreign currency translation Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Amortization in 2097 Annual Amortization, 2097 [Member] Annual Amortization, 2097 [Member] Change in tax laws or tax positions Redemption period four Debt Instrument, Redemption, Period Four [Member] Undeveloped Land - Las Vegas Leases, Acquired-in-Place [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Subsequent Event Subsequent Event [Member] Geographical [Axis] Geographical [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Expected amortization of associated intangible assets, 2034 Finite-Lived Intangible Assets, Amortization Expense, Final Year Finite-Lived Intangible Assets, Amortization Expense, Final Year Future amortization expense, 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Three WRF Wynn Resorts Finance, LLC [Member] Wynn Resorts Finance, LLC 2023 Lessor, Operating Lease, Payments to be Received, Four Years Multiemployer Plan Type [Axis] Multiemployer Plan Type [Axis] Statement [Table] Statement [Table] Foreign Tax Credit Foreign Tax Credit [Member] Foreign Tax Credit [Member] Tax Credit Carryforward Expiry In 2024 Tax Credit Carryforward, Expires 2024 [Member] Tax Credit Carryforward, Expires 2024 [Member] Expected prepayment period Debt Instrument, Anticipated Debt Extinguishment or Debt Prepayment, Expected Period for Prepayment Debt Instrument, Anticipated Debt Extinguishment or Debt Prepayment, Expected Period for Prepayment Finite-lived intangible assets, gross Finite-Lived Intangible Assets, Gross Performance Guarantee Performance Guarantee [Member] Property and Equipment, Net Property, Plant and Equipment [Table Text Block] Future Minimum Lease Payments, Operating Leases Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Total customer contract liabilities Total Customer Contract Liabilities Total Customer Contract Liabilities Proceeds from issuance of common stock, net of issuance costs Proceeds from Issuance of Common Stock Increase (decrease) in valuation allowance for deferred tax assets Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Debt instrument, interest rate Debt Instrument, Interest Rate, Stated Percentage Redemption period two Debt Instrument, Redemption, Period Two [Member] Exercisable as of December 31, 2019 Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price Redemption Note Accumulated Gain (Loss), Financial Liability, Fair Value Option, Attributable to Parent [Member] Litigation settlement LitigationSettlement_PromissoryNote Amount to settle allegations surrounding the interest rate on the redemption note. Proceeds Sale of Stock, Consideration Received on Transaction 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. 2022 Long-term Debt, Maturities, Repayments of Principal in Year Five Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Income Statement Location [Domain] Income Statement Location [Domain] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Long-term debt Total long-term debt, net of current portion Long-term Debt, Excluding Current Maturities Organization Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Weighted-average remaining lease term - Finance leases Finance Lease, Weighted Average Remaining Lease Term Availability of credit facility Line of Credit Facility, Remaining Borrowing Capacity Outstanding as of January 1, 2019 Outstanding as of December 31, 2019 Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Debt Instrument [Axis] Debt Instrument [Axis] Shares repurchased by the company and held as treasury shares Net cost for common stock purchased Treasury Stock, Value, Acquired, Cost Method Change in other gaming related liabilities Change in other gaming related liabilities Change in other gaming related liabilities Fair Value, Hierarchy [Axis] Fair Value Hierarchy and NAV [Axis] Schedule of Estimated Useful Lives of Assets Schedule Of Estimated Useful Lives Of Assets Table [Table Text Block] Schedule of estimated useful lives of assets [Table Text Block]. 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