Interest coverage ratio, minimum Interest Coverage Ratio Minimum Numerator Interest coverage ratio minimum numerator 2024 Finance Lease, Liability, Payments, Due Year Four Total stockholders' equity (deficit) Beginning balance Ending balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Payments for financing costs Payment of related fees and expenses Payments for related fees and expenses Payments of Debt Issuance Costs 2027 and 2028 WML Senior Notes Two Thousand And Twenty Six And Two Thousand And Twenty Eight WML Notes [Member] Two Thousand And Twenty Six And Two Thousand And Twenty Eight WML Notes Fair Value, Inputs, Level 3 Fair Value, Inputs, Level 3 [Member] Lease cost: Lease, Cost [Abstract] Lessee Arrangements Lessee, Leases [Policy Text Block] Real Estate [Domain] Real Estate [Domain] Stock-based compensation APIC, Share-based Payment Arrangement, Increase for Cost Recognition 2024 Long-term Debt, Maturities, Repayments of Principal in Year Four Future amortization expense, 2021 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months Debt covenant, maximum leverage ratio Debt Instrument, Covenant Terms, Leverage Ratio Debt Instrument, Covenant Terms, Leverage Ratio Commitments And Contingencies [Line Items] Commitments And Contingencies [Line Items] Commitments And Contingencies [Line Items] Assumed in business combination Share-based Compensation Arrangements by Share-based Payment Award, Options, Assumed In Business Combination, Weighted Average Exercise Price Share-based Compensation Arrangements by Share-based Payment Award, Options, Assumed In Business Combination, Weighted Average Exercise Price Multi-employer plan, period contributions Multiemployer Plan, Contributions by Employer Amount prepaid Amount related to prepayment of debt Payment for Debt Extinguishment or Debt Prepayment Cost 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] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Treasury stock, at cost (in shares) Treasury Stock, Shares 2021 Finance Lease, Liability, Payments, Due Next Twelve Months 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] Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Employer matching contributions, percentage of eligible compensation Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay Security Exchange Name Security Exchange Name Proceeds from issuance of common stock, net of issuance costs Amount raised in equity offering Proceeds from Issuance of Common Stock 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 Operations by Segment Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Outstanding as of January 1, 2020 Outstanding as of December 31, 2020 Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Issuance of common stock Stock Issued During Period, Value, New Issues 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 Interest on lease liabilities Finance Lease, Liability, Undiscounted Excess Amount 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 Financing costs included in accounts payable and other liabilities Debt Issuance Costs Incurred During Noncash or Partial Noncash Transaction LIBOR London Interbank Offered Rate (LIBOR) [Member] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Exercisable as of December 31, 2020 Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Common shares redeemed and canceled (in shares) Stock Redeemed or Called During Period, Shares Cash equivalents Cash Equivalents, at Carrying Value 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] Amount of complementary tax exemption per share Amount Of Complementary Tax Exemption Per Share Amount of Complementary Tax Exemption Per Share Repayments of long-term debt Contractual amortization payments Repayments of Long-term Debt 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 Schedule of Intangible Assets [Table] Schedule Of Intangible Assets [Table] Schedule of Intangible Assets [Table] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Share-based Payment Arrangement [Abstract] Intangible assets Intangible Assets [Member] Intangible Assets 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. Current liabilities: Liabilities, Current [Abstract] Credit Facility [Axis] Credit Facility [Axis] Leasehold Interest in Land Leasehold Interest In Land [Member] Leasehold interest In Land [Member] WML Share Award Plan WML Share Award Plan [Member] WML Share Award Plan [Member] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Term of employment agreement Initial Term Of Employment Agreement Initial Term of Employment Agreement Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Inventories Inventory, Policy [Policy Text Block] Gaming tax Special Gaming Tax On Gross Revenue Special Gaming Tax On Gross Revenue Effect of exchange rate on cash, cash equivalents and restricted cash Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Equity [Abstract] Equity [Abstract] Forfeited or expired Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Segment Reporting Information Segment Reporting Information [Line Items] Income Tax Authority [Domain] Income Tax Authority [Domain] Commitments and contingencies (Note 17) Commitments and Contingencies Property and Equipment Deferred Tax Assets, Construction in Progress Deferred Tax Assets, Construction in Progress Balance, beginning of period Balance, end of period Total cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] (Loss) gain on extinguishment of debt Loss on extinguishment of debt (Loss) gain on extinguishment of debt (Loss) gain on extinguishment of debt Gain (Loss) on Extinguishment of Debt Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Debt Instrument [Line Items] Debt Instrument [Line Items] Repurchase authority remaining under the program Stock Repurchase Program, Remaining Authorized Repurchase Amount Consolidation Items [Domain] Consolidation Items [Domain] Total advertising costs Advertising Expense Finance lease liabilities arising from obtaining finance lease assets Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Matching contribution expenses Defined Contribution Plan, Cost United States Income (Loss) from Continuing Operations before Income Taxes, Domestic Reduction to remaining contractual amortization payments on a pro rata basis Long-term Debt, Maturities, Repayments of Principal, Reduction On Pro Rata Basis Due To Prepayment Of Debt Long-term Debt, Maturities, Repayments of Principal, Reduction On Pro Rata Basis Due To Prepayment Of Debt Price per share (usd per share) Sale of Stock, Price Per Share 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 Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Amortization each year 2021 through 2096 Annual Amortization, Current Year Through 2096 [Member] Annual Amortization, Current Year Through 2096 [Member] Buildings and Improvements Buildings And Improvements [Member] Buildings And Improvements [Member] Amortization of leasehold interests in land Operating Lease, Right-of-use Asset, Amortization Operating Lease, Right-of-use Asset, Amortization Treasury Stock Treasury Stock [Member] 2022 Lessor, Operating Lease, Payments to be Received, Two Years Goodwill and intangible assets, net Total intangible assets, net Intangible Assets, Net (Including Goodwill) 2025 Other Commitment, Due in Fifth Year Segments [Axis] Segments [Axis] Aggregate Intrinsic Value Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Aggregate Intrinsic Value [Abstract] Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Aggregate Intrinsic Value [Abstract] 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 Treasury stock, at cost; 15,594,500 and 15,473,987 shares, respectively Treasury Stock, Value Goodwill: Goodwill [Roll Forward] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] 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] Secured Debt Secured Debt [Member] Operating income (loss) Operating Income (Loss) Entity Small Business Entity Small Business Foreign tax credits Foreign Tax Credits [Member] Foreign Tax Credits Income Taxes Income Taxes [Line Items] Income Taxes [Line Items] Fair Value, Measurement Frequency [Domain] Measurement Frequency [Domain] Segments [Domain] Segments [Domain] Earnings Per Share, Basic Net income (loss) attributable to Wynn Resorts, Limited per common share, basic (in usd per share) Earnings Per Share, Basic Intrinsic value of stock options exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Amendment Flag Amendment Flag Outstanding as of January 1, 2020 Outstanding as of December 31, 2020 Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Debt Covenant Components [Domain] Debt Covenant Components [Domain] [Domain] for Debt Covenant Components [Axis] Comprehensive income (loss) attributable to Wynn Resorts, Limited Comprehensive Income (Loss), Net of Tax, Attributable to Parent Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Intangible assets other than goodwill Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill 2021 Ground lease payments due 2021 Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Assumed in business combination Share-based Compensation Arrangement by Share-based Payment Award, Options, Assumed In Business Combination Share-based Compensation Arrangement by Share-based Payment Award, Options, Assumed In Business Combination Increase (decrease) in cash from changes in: Increase (Decrease) in Operating Capital [Abstract] Non-current liabilities Lease, Liabilities, Noncurrent, Lessee [Abstract] Lease, Liabilities, Noncurrent, Lessee [Abstract] Consolidation Items [Axis] Consolidation Items [Axis] Interest expense, net of amounts capitalized Interest expense, net of amounts capitalized Interest Expense Unrecognized compensation, stock options Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount Restricted cash Restricted cash Restricted Cash and Cash Equivalents 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 Plan Name [Domain] Plan Name [Domain] Use of Estimates Use of Estimates, Policy [Policy Text Block] Organization Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Fair value of non-controlling interest Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value Litigation settlement Litigation Settlement, Promissory Note Amount to settle allegations surrounding the interest rate on the redemption note. Other, net Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Valuation Allowance of Deferred Tax Assets SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member] Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Cash Cash Proceeds from sale of assets and other Proceeds from Sale of Productive Assets Finance Leases Finance Lease, Liability, Payment, Due [Abstract] Unrecognized tax benefit increase resulting in tax settlements Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit Other income (expense), net Nonoperating Income (Expense) Long-Term Debt Long-term Debt [Text Block] Amortization thereafter through 2037 Annual Amortization, 2029 Through 2037 [Member] Annual Amortization, 2029 Through 2037 [Member] Prepaid expenses and other Prepaid Expense and Other Assets, Current Exercise of stock options (in shares) Exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Pre-Open Costs Pre-Open Costs [Member] Pre-Open Costs [Member] Granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Less: comprehensive (income) loss attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Derivative Financial Instruments Derivatives, Policy [Policy Text Block] Write-offs, Net of Recoveries SEC Schedule, 12-09, Valuation Allowances and Reserves, Increase (Decrease) Adjustment Renewal terms of ground lease contracts Lessee, Operating Lease, Renewal Term 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 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 Parent Net Income (Loss) Attributable to Parent Receivables, inventories, accrued liabilities and other Deferred Tax Asset Receivable Inventories Accrued Liabilities And Other Deferred tax asset receivable inventories accrued liabilities and other Liabilities: Liabilities, Fair Value Disclosure [Abstract] Current assets: Assets, Current [Abstract] Leases [Abstract] Leases [Abstract] Debt Issuance Costs Debt, Policy [Policy Text Block] Debt Instrument [Axis] Debt Instrument [Axis] Accounts receivable, net of allowance for credit losses of $100,329 and $39,317 Receivables, net Receivables, Net, Current Cost method investment, fair value Equity Securities, FV-NI Fully vested and expected to vest as of December 31, 2020 Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Economic interest held following merger Percent interest held following acquisition Business Acquisition, Percentage of Voting Interests Acquired Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] 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 Corporate and other Corporate, Non-Segment [Member] Related Party Transaction [Domain] Related Party Transaction [Domain] Change in advanced room deposits and ticket sales Change in advanced room deposits and ticket sales Change in advanced room deposits and ticket sales Thereafter Ground lease payments due thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Five 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. Lease asset Deferred Tax Liabilities, Leasing Arrangements Ground lease payments due after 2023 Lessee, Operating Lease, Liability, Payments, Due After Year Three Lessee, Operating Lease, Liability, Payments, Due After Year Three 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 leases Long-term lease liabilities Operating Lease, Liability, Noncurrent Wynn Macau Wynn Resorts (Macau) [Member] Wynn Resorts (Macau) [Member] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Tax Credit Carryforward, Name [Domain] Tax Credit Carryforward, Name [Domain] Minimum rental income Operating Leases, Income Statement, Minimum Lease Revenue Cancellation of restricted stock (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Forfeited 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] Multiemployer Plan Type [Axis] Multiemployer Plan Type [Axis] Vesting period Defined Contribution Plan, Employer Matching Contribution, Vesting Period Defined Contribution Plan, Employer Matching Contribution, Vesting Period Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Weighted average grant date fair value Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Fair value of interest rate collar liability Derivative Liability Derivative Liability Intangible assets, useful life, years Finite-Lived Intangible Asset, Useful Life Litigation Case [Domain] Litigation Case [Domain] U.S. Federal statutory rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Assets Lease, Assets, Lesse [Abstract] Lease, Assets, Lesse [Abstract] Intangibles Deferred Tax Liabilities, Intangible Assets Non-taxable foreign income Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent Fair Value, Measurements, Recurring Fair Value, Recurring [Member] WRL Omnibus Plan Wynn Resorts Limited 2014 Omnibus Incentive Plan [Member] Omnibus Plan Allowance for credit losses Less: allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss, Current Schedule II- Valuation and Qualifying Accounts SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] Cash dividends declared, recorded as reduction of retained earnings Dividends, Common Stock, Cash Foreign loss carryforwards Foreign Loss Carryforwards [Member] Foreign Loss Carryforwards Defined Contribution Plan [Table] Defined Contribution Plan [Table] Related Party Transactions Related Party Transactions Disclosure [Text Block] Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Cash used in operating activities - Operating leases Operating Lease, Payments During Financial Covenant Relief Period During Financial Covenant Relief Period [Member] During Financial Covenant Relief Period Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Betbull Acquisition Betbull Transaction [Member] Betbull Transaction Domestic Plan Domestic Plan [Member] 2025 Finance Lease, Liability, Payments, Due Year Five Offering expenses Sale of Stock, Offering Expenses Sale of Stock, Offering Expenses Foreign Current Foreign Tax Expense (Benefit) Dividends paid Payments of Dividends Purchase of investment securities Payments to Acquire Debt Securities, Available-for-sale Fair value of shares vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Furniture, fixtures and equipment Furniture and Fixtures, Gross Shares authorized for issuance Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Director [Member] Related Party [Domain] Outstanding as of December 31, 2020 Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term 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] Reconciliation of Unrecognized Tax Benefits Summary of Income Tax Contingencies [Table Text Block] Net proceeds received from settlement agreement becoming effective and final Proceeds from Legal Settlements Retained earnings (accumulated deficit) Retained Earnings (Accumulated Deficit) Repurchase of common stock Payments for Repurchase of Common Stock Rooms Rooms [Member] Rooms [Member] Commitments and Contingencies [Table] Commitments And Contingencies [Table] Commitments and Contingencies [Table] Payment to acquire derivatives Cash payment Payments for Derivative Instrument, Financing Activities 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 Earnings Per Share, Diluted Net income attributable to Wynn Resorts, Ltd. per common share, diluted (in usd per share) Earnings Per Share, Diluted Stockholders' equity (deficit): 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 Minimum Minimum [Member] Noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest Schedule of Consideration and Identifiable Assets Acquired and Liabilities Assumed Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Schedule of Restricted Cash and Cash Equivalents Restrictions on Cash and Cash Equivalents [Table Text Block] Future amortization expense, 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Two Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Entity [Domain] Entity [Domain] Deferred income taxes Deferred Income Tax Expense (Benefit) Finance leases Long-term lease liabilities Finance Lease, Liability, Noncurrent Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Option Activity Share-based Payment Arrangement, Option, Activity [Table Text Block] 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 Gain Contingencies, Nature [Axis] Gain Contingencies, Nature [Axis] 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] Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Expected dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate (Provision) benefit for income taxes Income tax benefit (provision), total Income Tax Expense (Benefit) Operating Leases Lessee, Operating Lease, Liability, Payment, Due [Abstract] 2022 Ground lease payments due 2022 Lessee, Operating Lease, Liability, Payments, Due Year Two Amounts reclassified to net income Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Beginning balance Ending balance SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount Property and equipment Deferred Tax Liabilities, Property, Plant and Equipment Deferred Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Other long-term liabilities Other Liabilities, Noncurrent Leases Lessee, Finance Leases [Text Block] 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 Hotel Hotel [Member] Total Total Deferred Income Tax Expense Benefit Federal And Foreign Total deferred income tax expense benefit federal and foreign Fair value of interest rate collar liability recorded in Other accrued liabilities Derivative Liability, Current Foreign currency translation Goodwill, Foreign Currency Translation Gain (Loss) 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 on debt Debt Instrument, Interest Rate During Period Cash, Cash Equivalents and Restricted Cash Cash and Cash Equivalents Disclosure [Text Block] Valuation Allowances and Reserves [Domain] SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] Cash paid for amounts included in the measurement of lease liabilities: Cash Flow, Lessee [Abstract] Cash Flow, Lessee [Abstract] Long-term debt, gross Amount of term loan facility Long-term debt, gross Long-term Debt, Gross 2022 Other Commitment, Due in Second Year ASSETS Assets [Abstract] Retail Retail Site [Member] Beginning balance (in shares) Ending balance (in shares) Shares, Outstanding Minimum employee contribution percentage Defined Contribution Plan, Minimum Annual Contributions Per Employee, Percent Defined Contribution Plan, Minimum Annual Contributions Per Employee, Percent Unamortized debt issuance costs and original issue discounts and premium, net Debt Instrument, Unamortized Discount (Premium), Net Weighted-average remaining lease term - Operating leases Operating Lease, Weighted Average Remaining Lease Term Total Current Income Tax Expense (Benefit) Property and equipment acquired under finance leases Lease Obligation Incurred Entity Registrant Name Entity Registrant Name Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] 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 WML 5 5/8% Senior Notes, due 2028 Five and Five Over Eight Percentage Wynn Macau Limited Senior Notes Due Two Thousand Twenty Eight [Member] Five and Five Over Eight Percentage Wynn Macau Limited Senior Notes Due Two Thousand Twenty Eight Positive Outcome of Litigation Positive Outcome of Litigation [Member] Award Incentive Bonus Performance Shares [Member] 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 dilution from the assumed exercise of stock options and nonvested stock Weighted Average Number Diluted Shares Outstanding Adjustment Defined Benefit Plan Disclosure Defined Benefit Plan Disclosure [Line Items] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Finite-lived intangible assets, net Finite-Lived Intangible Assets, Net 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 Water rights and other Water Rights and Other [Member] Water Rights and Other [Member] Total undiscounted cash flows Finance Lease, Liability, Payment, Due Intangible Assets Intangible Assets [Line Items] Intangible Assets [Line Items] Derivative Instrument [Axis] Derivative Instrument [Axis] Schedule of Cash and Cash Equivalents Schedule of Cash and Cash Equivalents [Table Text Block] Range [Axis] Statistical Measurement [Axis] Supplemental cash flow disclosures Supplemental Cash Flow Information [Abstract] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Future amortization expense, 2024 through 2030 Finite-Lived Intangible Assets, Amortization Expense, Year Four Through Final Year Finite-Lived Intangible Assets, Amortization Expense, Year Four Through Final Year Total identifiable assets acquired and liabilities assumed Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net 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 Gain reflecting fair value of interest at date of acquisition Equity Securities, FV-NI, Realized Gain Amortization each year 2021 through 2028 Annual Amortization, Current Year Through 2028 [Member] Annual Amortization, Current Year Through 2028 [Member] Foreign tax credit carryforwards Deferred Tax Assets, Tax Credit Carryforwards, Foreign Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Cash and Cash Equivalents [Abstract] Cash and Cash Equivalents [Abstract] Change in derivatives fair value Gain (Loss) on Derivative Instruments, Net, Pretax Exercisable as of December 31, 2020 Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number Defined Contribution Plan Disclosure Defined Contribution Plan Disclosure [Line Items] Other operating expenses Other Operating Costs And Expenses [Abstract] Other Operating Costs and Expenses [Abstract] Weighted-average discount rate - Finance leases Finance Lease, Weighted Average Discount Rate, Percent WML Share Option Plan WML Share Option Plan [Member] WML Share Option Plan Variable lease cost Variable Lease, Cost Common stock, shares authorized (in shares) Common Stock, Shares Authorized Less: accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Stock-Based Compensation Compensation Related Costs, Policy [Policy Text Block] Term of interest rate collar Derivative, Term of Contract 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 Nonvested, beginning of period Nonvested, end of period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number General and administrative Selling, General and Administrative Expense Derivative Litigation Derivative Litigation [Member] Derivative Litigation 2025 Long-term Debt, Maturities, Repayments of Principal in Year Five Stock-based compensation Share-based Payment Arrangement, Noncash Expense Payments for additional ownership interest in Wynn Interactive Payments to purchase Wynn Interactive shares from non-controlling shareholders 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] State State and Local Jurisdiction [Member] Income Taxes Income Tax, Policy [Policy Text Block] Credit Facility [Domain] Credit Facility [Domain] Accrued compensation and benefits Employee-related Liabilities, Current Number of theaters Number Of Showrooms Number of Showrooms. Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Terms of ground lease contracts Lessee, Operating Lease, Term of Contract Recognized foreign tax credit tax benefit net of valuation allowance Recognized Foreign Tax Credit Tax Benefit Net Of Valuation Allowance Recognized Foreign Tax Credit tax benefit net of valuation allowance Schedule of Finance Lease Maturity Analysis Finance Lease, Liability, Maturity [Table Text Block] Percentage of ownership Noncontrolling Interest, Ownership Percentage by Parent Deferred Tax Asset [Domain] Deferred Tax Asset [Domain] Pre-opening expenses Deferred Tax Asset Pre Opening Costs Non Current Deferred Tax Asset Pre Opening Costs Non Current Concentration Risk Type [Axis] Concentration Risk Type [Axis] Commitment fee percentage Line of Credit Facility, Commitment Fee Percentage Document Fiscal Year Focus Document Fiscal Year Focus Chief Operating Officer Chief Operating Officer [Member] Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued LIABILITIES AND STOCKHOLDERS' EQUITY (DEFICIT) Liabilities and Equity [Abstract] Entity Current Reporting Status Entity Current Reporting Status Allowance for credit losses, percent of gross casino receivables Accounts Receivable, Allowance For Credit Loss, Percent Of Gross Casino Receivables Accounts Receivable, Allowance For Credit Loss, Percent Of Gross Casino Receivables Other assets Other Assets, Noncurrent Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Derivative Contract [Domain] Derivative Contract [Domain] 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] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Legal Entity Type of Counterparty [Domain] Legal Entity Type of Counterparty [Domain] Wynn Palace Wynn Palace [Member] Wynn Palace [Member] Long-term debt total Long-term Debt Long-term Debt Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Cost method investment, book value Equity Securities without Readily Determinable Fair Value, Amount Accrued interest Interest Payable, Current Equity Repurchase Program Equity Repurchase Program [Member] Equity Repurchase Program [Member] Amount of complementary tax exemption Amount Of Complementary Tax Exemption Amount of complementary tax exemption Interest rate swap notional amount Derivative Asset, Notional Amount WLV 5 1/2% Senior Notes, due 2025 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] Sale of Stock [Axis] Sale of Stock [Axis] Provision for credit losses Provision for credit losses Accounts Receivable, Credit Loss Expense (Reversal) Unvested awards compensation costs period of recognition Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Accounting Policies [Abstract] Accounting Policies [Abstract] Entity Address, City or Town Entity Address, City or Town Interest income Investment Income, Interest Consolidated leverage ratio, minimum Consolidated Leverage Ratio Minimum Numerator Consolidated leverage ratio minimum numerator 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. Receivables Accounts Receivable [Member] United States UNITED STATES Foreign Deferred Foreign Income Tax Expense (Benefit) 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] Intangibles and related other Deferred Tax Asset Intangibles And Related Other Deferred tax asset intangibles and related other Property and equipment, gross Property, Plant and Equipment, Gross Geographical [Domain] Geographical [Domain] Consolidated Income Loss Before Taxes for Domestic and Foreign Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] Property and Equipment, net Property, Plant and Equipment Disclosure [Text Block] Current Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Total contribution threshold percentage Total Contribution Threshold Percentage Total Contribution Threshold Percentage Square footage of non-cancelable operating leases Lessor, Operating Lease, Square Footage of Space Leased Lessor, Operating Lease, Square Footage of Space Leased Operating Segments Operating Segments [Member] Class of Treasury Stock [Table] Class of Treasury Stock [Table] Retirement Benefits [Abstract] Retirement Benefits [Abstract] 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] Related Party Transaction Related Party Transaction [Line Items] Wynn Interactive Wynn Interactive [Member] Wynn Interactive Principal amount purchased Debt Instrument, Repurchased Face Amount Fair value of interest rate collar liability recorded in Other long-term liabilities Derivative Liability, Noncurrent Income Tax Authority [Axis] Income Tax Authority [Axis] Meeting and Convention Meeting and Convention [Member] Meeting and Convention Accounts and construction payables Accounts Payable, Current Change in net unrealized gain (loss) Other Comprehensive Income (Loss), before Reclassifications, Net of Tax 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 U.S. loss carryforwards Domestic Loss Carryforwards [Member] Domestic Loss Carryforwards Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] WML Wynn Macau, Limited [Member] Wynn Macau, Limited [Member] Pre-opening Pre-Opening Costs Document Fiscal Period Focus Document Fiscal Period Focus Geographic Concentration Risk Geographic Concentration Risk [Member] Common stock, shares issued (in shares) Common Stock, Shares, Issued Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Promissory Note Notes Payable, Other Payables [Member] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Debt covenant, percentage of total assets Debt Instrument, Covenant, Percentage of Total Assets Debt Instrument, Covenant, Percentage of Total Assets Buildings and improvements Buildings and Improvements, Gross Entity Filer Category Entity Filer Category Aggregate amount of common stock available for grant Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Less: accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Entertainment, retail and other Entertainment Retail And Other [Member] Entertainment Retail And Other [Member] Thereafter Finance Lease, Liability, Payments, Due after Year Five Change of Control Debt Instrument, Redemption, Period Two [Member] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Intangible Assets Other Than Goodwill Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block] Granted Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Airplanes Airplanes [Member] Airplanes [Member] 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 Software Software and Software Development Costs [Member] Issuance of common stock (in shares) Stock Issued During Period, Shares, New Issues Benefit Plans Schedule of Defined Benefit Plans Disclosures [Table Text Block] Indefinite-lived Intangible Assets by Major Class Indefinite-lived Intangible Assets [Axis] Redemption Note credit risk adjustment, net of tax of $2,735 Redemption Note settlement Cumulative credit risk adjustment Redemption Note settlement credit risk adjustment Redemption Note settlement credit risk adjustment Consolidated Entities [Axis] Consolidated Entities [Axis] Required quarterly payments Debt Instrument, Periodic Payment, Principal Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Underwriting discounts Sale of Stock, Underwriting Discounts Sale of Stock, Underwriting Discounts Schedule of Customer Contract Liabilities Schedule of Customer Contract Liabilities [Table Text Block] [Table Text Block] for Schedule of Customer Contract Liabilities [Table] Income Taxes (Federal Statutory Corporate Tax Rate) Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Common stock, par value $0.01; 400,000,000 shares authorized; 123,482,836 and 122,837,930 shares issued; 107,888,336 and 107,363,943 shares outstanding, respectively Common Stock, Value, Issued 2023 Other Commitment, Due in Third Year Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Real Estate, Type of Property [Axis] Real Estate, Type of Property [Axis] Revenue Recognition [Abstract] Revenue Recognition [Abstract] Rooms Occupancy [Member] Cash and cash equivalents Total cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Stock-based compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost Schedule of Goodwill Schedule of Goodwill [Table Text Block] Basic (in shares) Weighted average common shares outstanding (used in calculation of basic earnings per share) Weighted Average Number of Shares Outstanding, Basic Operating lease assets Operating leases Operating lease assets related to amount allocated to leasehold interests in land Operating Lease, Right-of-Use Asset Provided for Stock Options under Stock-Based Compensation Plans Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Betbull, WSI, and Wynn Social Betbull, WSI, And Wynn Social [Member] Betbull, WSI, And Wynn Social Equity Components [Axis] Equity Components [Axis] Net deferred tax (liability) asset Deferred Tax Liabilities, Net Net deferred tax (liability) asset Deferred Tax Assets, Net Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Fair value of debt instrument excluding the Redemption Note Debt Instrument, Fair Value, Excluding The Redemption Note Debt Instrument, Fair Value, Excluding The Redemption Note Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Customer deposits Contract with Customer, Liability, Current Indefinite-Lived Intangible Assets Schedule of Indefinite-Lived Intangible Assets [Table Text Block] U.S. Federal Current Federal Tax Expense (Benefit) Entity Address, Address Line One Entity Address, Address Line One Schedule of Lease Cost and Other Information Lease, Cost [Table Text Block] Entity Emerging Growth Company Entity Emerging Growth Company Provision (Benefit) for Income Taxes Schedule Of Provision For Income Tax Table [Table Text Block] Schedule of provision for income tax [Table text block] Gaming Taxes Gaming Taxes Policy [Policy Text Block] Gaming Taxes Policy Receivables, gross Accounts Receivable, before Allowance for Credit Loss, Current Proceeds from note receivable from sale of ownership interest in subsidiary Proceeds from Note Receivable from Sale of Ownership Interest in Subsidiary Proceeds from Note Receivable from Sale of Ownership Interest in Subsidiary Wynn Interactive transactions Adjustments To Additional Paid In Capital, Acquisition Adjustments To Additional Paid In Capital, Acquisition Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] Liability settled with shares of common stock Stock Issued Liabilities assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities, Other Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities, Other Variable Rate [Axis] Variable Rate [Axis] Total Other Commitment Shares repurchased by the company and held as treasury shares Net cost for common stock purchased Treasury Stock, Value, Acquired, Cost Method Deferred tax liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Related Party Transaction [Axis] Related Party Transaction [Axis] Net cash (used in) provided by operating activities Net Cash Provided by (Used in) Operating Activities Shares: Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] 2021 Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months Trading Symbol Trading Symbol Debt issuance costs Debt Issuance Costs, Net Macau Gaming Concession Macau Gaming Concession [Member] Macau Gaming Concession [Member] Authorized amount under repurchase program Stock Repurchase Program, Authorized Amount Finance lease payments Cash used in financing activities - Finance leases Finance Lease, Principal Payments Distributions to noncontrolling interest Contributions to Wynn Interactive Payments of Distributions to Affiliates 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 Line of Credit Line of Credit [Member] Proceeds from the sale or maturity of investment securities Proceeds from Sale and Maturity of Marketable Securities Massachusetts Gaming License Massachusetts Gaming License [Member] Massachusetts Gaming License [Member] Current liabilities Lease, Liabilities, Current, Lessee [Abstract] Lease, Liabilities, Current, Lessee [Abstract] Number of nightclubs Number Of Facilities Number of Facilities Entity Shell Company Entity Shell Company 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 Other gaming related liabilities Other gaming related liabilities Other gaming related liabilities Functional area square footage Functional Area Square Footage Functional Area Square Footage. Entity Public Float Entity Public Float Related Party Transactions [Abstract] Related Party Transactions [Abstract] Valuation allowance Less: valuation allowance Deferred Tax Assets, Valuation Allowance Document Type Document Type ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Land Land [Member] Foreign Currency Foreign Currency Transactions and Translations Policy [Policy Text Block] 2022 Finance Lease, Liability, Payments, Due Year Two Total current liabilities Liabilities, Current 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 Other-than-temporary impairment losses Other than Temporary Impairment Losses, Investments Capitalized interest Interest Costs Capitalized Indefinite-lived intangible assets Indefinite-lived Intangible Assets (Excluding Goodwill) Settlement of transactions from pre-existing relationship and fair value of vested replacement stock options included in consideration Business Combination, Consideration Transferred, Other Balance-beginning of year Balance-end of year Unrecognized Tax Benefits Acquisitions Goodwill acquired Goodwill, Acquired During Period Foreign Income (Loss) from Continuing Operations before Income Taxes, Foreign Increase (decrease) in valuation allowance for deferred tax assets Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Vested shares issued (in shares) Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Interest Rate Collar Interest Rate Collar [Member] Interest Rate Collar [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 Thereafter Lessor, Operating Lease, Payments to be Received, Thereafter Other foreign deferred tax assets Other Foreign Deferred Tax Assets [Member] Other Foreign Deferred Tax Assets 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 Issuance of restricted stock (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Lessor Arrangements Lessor, Leases [Policy Text Block] Property and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Term Loan Medium-term Notes Medium-term Notes [Member] Total assets Total assets Assets Assets Valuation allowance, other Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Exercised Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Entity Address, State or Province Entity Address, State or Province Total lease liabilities Liability associated with ground lease Operating Lease, Liability Unrecognized compensation cost, weighted average period Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period Subsidiaries Subsidiaries [Member] Schedule of Stock-Based Compensation Plans Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] Subsequent Event Subsequent Event [Member] Variable Rate [Domain] Variable Rate [Domain] Shares repurchased by the company and held as treasury shares (in shares) Stock repurchases, shares Treasury Stock, Shares, Acquired Tax Credit Carryforward, Expires at 2025 Tax Credit Carryforward, Expires at 2025 [member] [Member] Tax Credit Carryforward, Expires 2025 [Member] [Member] General and Administrative Expense General and Administrative Expense [Member] Retirement Plan Sponsor Location [Domain] Retirement Plan Sponsor Location [Domain] Cash acquired from business combination Less: Cash acquired Cash Acquired from Acquisition 2024 Ground lease payments due 2024 Lessee, Operating Lease, Liability, Payments, Due Year Four Operating lease liabilities arising from obtaining operating lease assets Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Finance leases Short-term lease liabilities Finance Lease, Liability, Current Repayment of outstanding borrowings Repayments of Long-term Lines of Credit Retail Retail [Member] Segment Information Segment Reporting Disclosure [Text Block] Capitalized stock-based compensation Total stock-based compensation capitalized Share-based Payment Arrangement, Amount Capitalized Availability of credit facility Line of Credit Facility, Remaining Borrowing Capacity Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Nonvested and Performance Nonvested Share Activity Schedule of Nonvested Share Activity [Table Text Block] Fourth Fiscal Quarter and 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 Multiemployer Plan Name [Axis] Multiemployer Plan Name [Axis] 2025 Lessor, Operating Lease, Payments to be Received, Five Years Basic and diluted net income (loss) per common share: Earnings Per Share, Basic and Diluted [Abstract] Recognized Tax Benefit [Domain] Recognized Tax Benefit [Domain] Recognized Tax Benefit [Domain] Tax Credit Carryforward Expiry In 2023 Tax Credit Carryforward Expiry In Two Thousand Twenty Three [Member] Tax Credit Carryforward Expiry In Two Thousand Twenty Three [Member] Wynn Macau Credit Facilities [Member] Wynn Macau Credit Facilities [Member] Wynn Macau Credit Facilities Las Vegas Operations Las Vegas Operations [Member] Las Vegas Operations Tax Credit Carryforward, Expires at 2027 Tax Credit Carryforward, Expires at 2027 [Member] Tax Credit Carryforward, Expires at 2027 [Member] Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] 2023 Lessor, Operating Lease, Payments to be Received, Three Years Wynn Macau Plan Wynn Macau Plan [Member] Wynn Macau Plan Cumulative effect, change in accounting Cumulative Effect of New Accounting Principle in Period of Adoption Entity Voluntary Filers Entity Voluntary Filers Foreign Foreign Tax Authority [Member] Casino Casino [Member] Net Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Product and Service [Domain] Product and Service [Domain] Valuation Assumptions Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Change in derivatives fair value Unrealized Gain (Loss) on Derivatives Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Balance at beginning of year Balance end of period Goodwill Goodwill Statement Statement [Line Items] Airplanes Flight Equipment, Gross Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Advertising Costs Advertising Cost [Policy Text Block] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Tax benefit from compensation expense Share-based Payment Arrangement, Expense, Tax Benefit Percentage interest in acquiree immediately prior to acquisition Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage Plan Name [Axis] Plan Name [Axis] Performance period Share-based Compensation Arrangement by Share-based Payment Award, Award Measurement Period Share-based Compensation Arrangement by Share-based Payment Award, Award Measurement Period Consolidated leverage ratio excess cash flow percentage Percentage Of Annual Excess Cash Flows To Be Repaid Under New Credit Facility Percentage of Excess Cash Flow That May Be Required To Be Repaid Finite-Lived Intangible Assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Stock based compensation costs Stock based compensation costs Share-based Payment Arrangement, Expensed and Capitalized, Amount Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Maximum consolidated first lien net leverage ratio Debt Instrument, Covenant Terms, Maximum Consolidated First Lien Net Leverage Ratio Debt Instrument, Covenant Terms, Maximum Consolidated First Lien Net Leverage Ratio Weighted average common shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Quoted Market Prices in Active Markets (Level 1) Fair Value, Inputs, Level 1 [Member] Entity Central Index Key Entity Central Index Key Wynn Macau Wynn Macau [Member] Wynn Macau [Member] Stockholders' Equity (Deficit) Stockholders' Equity Note Disclosure [Text Block] Debt Instrument, Covenant, Period In Effect [Domain] Debt Instrument, Covenant, Period In Effect [Domain] Debt Instrument, Covenant, Period In Effect Allowance for Doubtful Accounts SEC Schedule, 12-09, Allowance, Credit Loss [Member] WML 5 1/8% Senior 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 Other Other Intangible Assets [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Total undiscounted cash flows Lessee, Operating Lease, Liability, Payments, Due Property and Equipment, Net Property, Plant and Equipment [Table Text Block] Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Additional paid-in capital Additional Paid in Capital Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Share-Based Compensation Allocated Costs Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Exercisable as of December 31, 2020 Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value 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] Valuation Allowances and Reserves Type SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] Short-term lease cost Short-term Lease, Cost Stock options granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Letter of credit outstanding Letters of Credit Outstanding, Amount Tax benefits (loss) realized Tax Benefits From Exercise Of Nonqualified Stock Options Vested Restricted Stock And Accrued Dividends Tax benefits From Exercise of Nonqualified Stock Options Vested Restricted Stock and Accrued Dividends Ceiling rate Derivative, Cap Interest Rate Schedule of Future Minimum Rentals to be Received Under Operating Leases Lessor, Operating Lease, Payments to be Received, Maturity [Table Text Block] U.S. State Deferred State and Local Income Tax Expense (Benefit) Periodic principal payment percent Debt Instrument, Periodic Payment Percent, Principal Debt Instrument, Periodic Payment Percent, Principal Dividends payable on unvested restricted stock included in other accrued liabilities Other Accrued Liabilities, Current Amount Related to Dividends Payable on Unvested Restricted Stock Other Accrued Liabilities Current Amount Related to Dividends Payable on Unvested Restricted Stock Deferred Tax Assets And Liabilities Deferred Tax Assets And Liabilities [Line Items] Deferred Tax Assets And Liabilities [Line Items] Proceeds from exercise of stock options Cash received from the exercise of stock options Proceeds from Stock Options Exercised Ownership percentage Ownership Percentage Ownership Percentage Common Stock Common Stock [Member] Total consideration, net of cash acquired Business Combination, Consideration Transferred, Net Of Cash Acquired Business Combination, Consideration Transferred, Net Of Cash Acquired Title of 12(b) Security Title of 12(b) Security Receivables, net Increase (Decrease) in Receivables Share-based Compensation Arrangement by Share-based Payment Award Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Material Adverse Effect 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), Including Portion Attributable to Noncontrolling Interest Product and Service [Axis] Product and Service [Axis] Operating lease cost Operating Lease, Cost Tax Credit Carryforward [Axis] Tax Credit Carryforward [Axis] Other information: Lease, Other Information, Lessee [Abstract] Lease, Other Information, Lessee [Abstract] Summary of Significant Accounting Policies Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Macau Operations Macau Operations [Member] Macau Operations Summary of Lease Assets and Liabilities Assets and Liabilities, Lessee [Table Text Block] Assets and Liabilities, Lessee [Table Text Block] Deferred tax liabilities Deferred Tax Liabilities, Gross Fair Value Measurements Fair Value of Financial Instruments, Policy [Policy Text Block] Total liabilities and stockholders' equity (deficit) Liabilities and Equity Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Other Macau Other Macau [Member] Other Macau [Member] Percentage of markers due from customers Concentration Risk, Percentage Finance lease interest cost Finance Lease, Interest Expense Summary of Valuation Allowances Summary of Valuation Allowance [Table Text Block] Total Income Loss From Continuing Operations Before Income Taxes And Minority Interest Income (Loss) from Continuing Operations before Income Taxes and Minority Interest Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Terms of lease contracts Lessor, Operating Lease, Term of Contract Principles of Consolidation Consolidation, Policy [Policy Text Block] Amount raised in equity offering Proceeds Sale of Stock, Consideration Received on Transaction Contingent rental income Operating Lease, Variable Lease Income U.S. State Current State and Local Tax Expense (Benefit) Newly issued shares of common stock in registered public offering (shares) Sale of Stock, Number of Shares Issued in Transaction HIBOR HIBOR [Member] HIBOR Final payment percent, principal Debt Instrument, Final Payment Percent, Principal Debt Instrument, Final Payment Percent, Principal Operating revenues: Revenues [Abstract] Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five Fully vested and expected to vest as of December 31, 2020 Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Tax loss carryforward Operating Loss Carryforwards Award Type [Axis] Award Type [Axis] WRF Senior Secured Credit Facilities WRF Senior Secured Credit Facilities [Member] WRF Senior Secured Credit Facilities Global intangible low-taxed income Effective Income Tax Rate Reconciliation, Global Intangible Low-Taxed Income, Percent Effective Income Tax Rate Reconciliation, Global Intangible Low-Taxed Income, Percent Other Other Nonoperating Income (Expense) Operating expenses: Costs and Expenses [Abstract] Less: net (income) loss attributable to noncontrolling interests Net income attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest 2021 Lessor, Operating Lease, Payments to be Received, Next Twelve Months Line of Credit Facility [Table] Line of Credit Facility [Table] Geographical [Axis] Geographical [Axis] Annual complementary tax to be paid Annual Complementary Tax Obligation Annual Complementary Tax Obligation Retained Earnings (Accumulated Deficit) Retained Earnings [Member] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Change in total customer contract liabilities Change in total customer contract liabilities Change in total customer contract liabilities Leases Lessee, Operating Leases [Text Block] Undeveloped Land - Las Vegas NEVADA Statement [Table] Statement [Table] Goodwill and Intangible Assets, net Goodwill and Intangible Assets Disclosure [Text Block] Property, Plant and Equipment, Useful Life Estimated useful life of property and equipment Property, Plant and Equipment, Useful Life Land Improvements [Member] Land Improvements [Member] Schedule of Assets and Liabilities Carried at Fair Value Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Maximum Maximum [Member] Variable Interest Entities [Abstract] Variable Interest Entities [Abstract] Variable Interest Entities [Abstract] Trademarks Trademarks [Member] 2023 Ground lease payments due 2023 Lessee, Operating Lease, Liability, Payments, Due Year Three Receivables [Abstract] Receivables [Abstract] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Ownership [Axis] Ownership [Axis] U.S. Domestic Tax Authority [Member] Income Taxes [Table] Income Taxes [Table] Income Taxes [Table] Documents Incorporated by Reference Documents Incorporated by Reference [Text Block] Outside the United States, primarily Asia Asia [Member] Unrecognized tax benefits that would impact the effective tax rate if recognized Unrecognized Tax Benefits that Would Impact Effective Tax Rate Schedule of Receivables, net Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Legal Entity [Axis] Legal Entity [Axis] City Area Code City Area Code Pre-Opening Expenses Start-up Activities, Cost Policy [Policy Text Block] Document Period End Date Document Period End Date Other Commitments [Domain] Other Commitments [Domain] Deferred Tax Assets And Liabilities [Table] Deferred Tax Assets And Liabilities [Table] Deferred Tax Assets And Liabilities [Table] Debt instrument, aggregate principal amount Redemption price promissory note, principal amount Debt Instrument, Face Amount Long-lived assets Long-Lived Assets Change in net unrealized loss on investment securities, before and after tax Change in net unrealized gain (loss) on investment securities Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax Valuation and Qualifying Accounts Disclosure [Line Items] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] Number of Reportable Segments Number of Reportable Segments Cash dividends declared Cash dividends Dividends, Cash Comprehensive Income Comprehensive Income, Policy [Policy Text Block] Accounts Receivable and Credit Risk Accounts Receivable [Policy Text Block] Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] Foreign currency translation adjustments, before and after tax Currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Tax Credit Carryforward Expiry In 2021 Tax Credit Carryforward Expiry In Two Thousand Twenty One [Member] Tax Credit Carryforward Expiry In Two Thousand Twenty One [Member] Recognized Tax Benefit [Axis] Recognized Tax Benefit [Axis] Recognized Tax Benefit [Axis] Range [Domain] Statistical Measurement [Domain] Retirement Plan Sponsor Location [Axis] Retirement Plan Sponsor Location [Axis] Cover [Abstract] Legal Entity of Counterparty, Type [Axis] Legal Entity of Counterparty, Type [Axis] Other tax credit carryforwards Deferred Tax Assets, Other Tax Carryforwards Corporate and Other Corporate and Other [Member] 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 Tax benefits (loss) realized from option exercises Share-based Payment Arrangement, Exercise of Option, Tax Benefit Supplemental cash flow disclosures: Lease, Supplemental Cash Flow Information [Abstract] Lease, Supplemental Cash Flow Information [Abstract] Stock-Based Compensation Share-based Payment Arrangement [Text Block] Fully vested and expected to vest as of December 31, 2020 Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Subsidiary, Sale of Stock [Line Items] Subsidiary, Sale of Stock [Line Items] 2024 Lessor, Operating Lease, Payments to be Received, Four Years Property and equipment Deferred Tax Assets, Property, Plant and Equipment WRF Revolver, due 2024 WRF Revolver Senior Revolving Credit Facility, Due 2024 [Member] Senior Revolving Credit Facility, Due 2024 Current liability related to debt prepayment Debt Prepayment Liability, Current Debt Prepayment Liability, Current Fee required for unborrowed amounts, percentage per annum Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Related Party [Axis] Related Party [Axis] Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Counterparty Name [Axis] Counterparty Name [Axis] Net income (loss) attributable to Wynn Resorts, Limited: Earnings Per Share [Abstract] Fair Value, Hierarchy [Axis] Fair Value Hierarchy and NAV [Axis] WRF Term Loan, due 2024 WRF Term Loan Senior Term Loan Facility, Due 2024 [Member] Senior Term Loan Facility, Due 2024 Distribution to noncontrolling interest Decrease from distributions to noncontrolling interest Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Other Deferred Tax Liabilities, Other Property and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Unrealized loss on investment securities AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member] Schedule of Operating Lease Maturity Analysis Lessee, Operating Lease, Liability, Maturity [Table Text Block] 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 Income (loss) before income taxes Income (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Interactive Data Current Entity Interactive Data Current Valuation and Qualifying Accounts [Abstract] SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] Rent expenses Operating Leases, Rent Expense Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Business Combinations Business Combinations Policy [Policy Text Block] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Thereafter Other Commitment, Due after Fifth Year Total lease cost Lease, Cost Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Tax on Redemption Note credit risk adjustment Tax on change in accounting for credit risk Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, after Reclassification Adjustment, Tax Future amortization expense, 2023 Finite-Lived Intangible Assets, Amortization Expense, Year Three Receivables, net Loans, Notes, Trade and Other Receivables, Excluding Allowance for Credit Losses [Text Block] Wynn Retail Wynn Retail [Member] Wynn Retail [Member] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Total rental income Operating Lease, Lease Income 2021 Other Commitment, Due in Next Twelve Months Other income (expense): Other non-operating income and expenses Nonoperating Income (Expense) [Abstract] Term of plan Share-based Compensation Arrangement by Share-based Payment Award, Term of Plan Share-based Compensation Arrangement by Share-based Payment Award, Term of Plan Total rental income Operating Leases, Income Statement, Lease Revenue 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 Schedule Of Finite And Indefinite Lived Intangible Assets [Table] Schedule Of Finite And Indefinite Lived Intangible Assets [Table] Schedule Of Finite And Indefinite Lived Intangible Assets [Table] Segment Reporting [Abstract] Segment Reporting [Abstract] Interest on lease liabilities Lessee, Operating Lease, Liability, Undiscounted Excess Amount Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Debt Disclosure [Abstract] Debt Disclosure [Abstract] Scheduled Maturities of Long-Term Debt Schedule of Maturities of Long-term Debt [Table Text Block] Equity Offering Public Stock Offering [Member] Public Stock Offering [Member] Fiscal Year ending December 31, 2019 Debt Covenant, Current Fiscal Year [Member] Debt Covenant, Current Fiscal Year Income Statement Location [Domain] Income Statement Location [Domain] Consideration Business Combination, Consideration Transferred [Abstract] Realized losses on investments Realized Investment Gains (Losses) Weighted-average discount rate - Operating leases Operating Lease, Weighted Average Discount Rate, Percent Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Total operating revenues Revenue from Contract with Customer, Including Assessed Tax Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Outstanding as of December 31, 2020 Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value U.S. Federal Deferred Federal Income Tax Expense (Benefit) Options Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Lease Amortization [Domain] Lease Amortization [Domain] [Domain] for Lease Amortization [Axis] Document Transition Report Document Transition Report Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Debt redemption price as percentage of principal Debt Instrument, Redemption Price, Percentage 2023 Long-term Debt, Maturities, Repayments of Principal in Year Three Cash paid for income taxes (income tax refunds received) Income Taxes Paid, Net Company's share of dividend Proceeds from Dividends Received Write-offs Accounts Receivable, Allowance for Credit Loss, Writeoff Increase in shares authorized for issuance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Unvested awards compensation not yet recognized Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Noncontrolling Interests Noncontrolling Interest [Member] Encore Boston Harbor Encore Boston Harbor [Member] Encore Boston Harbor [Member] Multiemployer Plan Name [Domain] Multiemployer Plan Name [Domain] Increases based on tax positions of the current year Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions 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 Sale of Stock [Domain] Sale of Stock [Domain] Operating leases Short-term lease liabilities Operating Lease, Liability, Current Schedule of Shares used in Calculation of Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Other Deferred Tax Assets, Other Entity File Number Entity File Number Furniture, Fixtures and Equipment Furniture Fixtures And Equipment [Member] Furniture Fixtures And Equipment [Member] FTC carryforwards expired Deferred Tax Assets, Tax Credit Carryforwards, Expirations Deferred Tax Assets, Tax Credit Carryforwards, Expirations Income Taxes Income Tax Disclosure [Text Block] Identifiable assets acquired and liabilities assumed Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract] Tax credit of "net" foreign source income Percent Tax Credit On Foreign Income Percent Tax Credit On Foreign Income Revenue Revenue Recognition [Text Block] Revenue Recognition [Text Block] Document Annual Report Document Annual Report Pre-opening expenses excluded from stock-based compensation Pre-Opening Costs Excluded from Share-based Compensation Pre-Opening Costs Excluded from Share-based Compensation Total future minimum rentals Lessor, Operating Lease, Payments to be Received Share Repurchase Program [Domain] Share Repurchase Program [Domain] Assets and Capital Expenditures by Segment Reconciliation of Assets from Segment to Consolidated [Table Text Block] WIL Omnibus Plan Wynn Interactive Ltd 2020 Omnibus Incentive Plan [Member] Wynn Interactive Ltd 2020 Omnibus Incentive Plan Other current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other Wynn Macau Term Loan, due 2022 Senior Term Loan Facility, Due 2022 [Member] Senior Term Loan Facility, Due 2022 [Member] Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Valuation Allowance [Line Items] Valuation Allowance [Line Items] Fully vested and expected to vest as of December 31, 2020 Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Capital expenditures, net of construction payables and retention Capital expenditures Payments to Acquire Property, Plant, and Equipment Proceeds from issuance of long-term debt Proceeds from Issuance of Long-term Debt 2025 Ground lease payments due 2025 Lessee, Operating Lease, Liability, Payments, Due Year Five Recoveries of receivables previously written-off Accounts Receivable, Allowance for Credit Loss, Recovery Fair value of combined interests contributed Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Cash, cash equivalents and restricted cash: Cash and Cash Equivalents, Period Increase (Decrease) [Abstract] Annual vesting percentage Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage Leases Lessor, Operating Leases [Text Block] Total Wynn Resorts,  Limited stockholders' equity (deficit) Parent [Member] Additional Paid-in Capital Additional Paid-in Capital [Member] U.S. and foreign uncertain tax positions that increase NOL and foreign tax credit carryforward deferred tax assets Us And Foreign Uncertain Tax Positions That Increase Nol And Foreign Tax Credit Carryforward Deferred Tax Assets US and foreign uncertain tax positions that increase NOL and foreign tax credit carryforward deferred tax assets Weighted-average remaining lease term - Finance leases Finance Lease, Weighted Average Remaining Lease Term Schedule of Minimum and Contingent Operating Lease Income Operating Lease, Lease Income [Table Text Block] Purchase of home for director Purchase And Renovation Costs For Home Purchased For Employee Total Costs To Date For Home And Renovations Made To The Home Purchased For An Employee. Lease Amortization [Axis] Lease Amortization [Axis] Lease Amortization [Axis] Net operating loss carryforward Deferred Tax Assets, Operating Loss Carryforwards Uncertain tax positions, noncurrent Liability for Uncertainty in Income Taxes, Noncurrent Dividend paid (per share) Common Stock, Dividends, Per Share, Cash Paid 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] Issuance of restricted stock Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Debt instrument, interest rate Debt Instrument, Interest Rate, Stated Percentage 2022 Long-term Debt, Maturities, Repayments of Principal in Year Two Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Business Combinations [Abstract] Finite-Lived Intangible Assets by Major Class Finite-Lived Intangible Assets by Major Class [Axis] Entity Tax Identification Number Entity Tax Identification Number Nonrecurring regulatory expense Nonrecurring Regulatory Expense Nonrecurring Regulatory Expense Retail Joint Venture Retail Joint Venture [Member] Retail Joint Venture [Member] Refinancing Transactions Refinancing Transactions [Member] Refinancing Transactions Income Statement Location [Axis] Income Statement Location [Axis] Business Acquisition [Axis] Business Acquisition [Axis] Southern Nevada Culinary and Bartenders Pension Plan Southern Nevada Culinary and Bartenders Pension Plan [Member] Southern Nevada Culinary and Bartenders Pension Plan [Member] Contingent rental income Operating Leases, Income Statement, Contingent Revenue Current Fiscal Year End Date Current Fiscal Year End Date Total consideration Business Combination, Consideration Transferred Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] 2023 Finance Lease, Liability, Payments, Due Year Three Business Acquisition [Line Items] Business Acquisition [Line Items] Finance leases Finance Lease, Right-of-Use Asset Foreign tax credits, net of valuation allowance Effective Income Tax Rate Reconciliation, Tax Credit, Net of Valuation Allowance, Foreign, Percent Effective Income Tax Rate Reconciliation, Tax Credit, Net of Valuation Allowance, Foreign, Percent Property charges and other Property Charges and Other [Member] Property Charges and Other [Member] Food and Beverage Food and Beverage [Member] Company's matching contribution percentage Defined Contribution Plan, Employer Matching Contribution, Percent of Match Total operating expenses Costs and Expenses Wynn Las Vegas Wynn Las Vegas [Member] Wynn Las Vegas [Member] Decrease in unrecognized tax benefits due to expiration of the statute of limitations Reductions due to lapse in statutes of limitations Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations 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. Long-lived Assets by Geographic Area Long-lived Assets by Geographic Areas [Table Text Block] Nonvested, beginning of period Nonvested, end of period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Expected amortization of associated intangible assets, each year 2021-2033 Finite-Lived Intangible Assets, Annual Amortization Expense, Excluding Final Year Finite-Lived Intangible Assets, Annual Amortization Expense, Excluding Final Year Inventories Inventory, Net 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 Customer Lists Customer Lists [Member] Measurement Frequency Measurement Frequency [Axis] Earnings Per Share Earnings Per Share [Text Block] Equity Award [Domain] Award Type [Domain] Debt Covenant Components [Axis] Debt Covenant Components [Axis] Debt Covenant Components [Axis] Total lease liabilities Finance Lease, Liability Revolving Credit Facility Revolving Credit Facility [Member] Prepaid insurance, maintenance and taxes Deferred Tax Liabilities, Prepaid Expenses Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] Aruze USA, Inc. Aruze United States Of America Inc [Member] Aruze United States Of America Inc [Member] Valuation and Qualifying Accounts Disclosure [Table] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] Multi-employer Pension Plan Multiemployer Plans, Pension [Member] Exercisable as of December 31, 2020 Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price Ownership [Domain] Ownership [Domain] Amortization in 2097 Annual Amortization, 2097 [Member] Annual Amortization, 2097 [Member] Number of restaurants Number of Restaurants Long-Term Debt Schedule of Long-term Debt Instruments [Table Text Block] Other U.S. deferred tax assets Other Domestic Deferred Tax Assets [Member] Other Domestic Deferred Tax Assets Expected amortization of associated intangible assets, 2034 Finite-Lived Intangible Assets, Amortization Expense, Final Year Finite-Lived Intangible Assets, Amortization Expense, Final Year Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Future amortization expense, 2021 through 2022 Finite-Lived Intangible Assets, Annual Amortization Expense, Year One And Year Two Finite-Lived Intangible Assets, Annual Amortization Expense, Year One And Year Two Capitalized Interest Interest Capitalization, Policy [Policy Text Block] WRF Wynn Resorts Finance, LLC [Member] Wynn Resorts Finance, LLC Recognized interest and penalties Income Tax Examination, Penalties and Interest Expense Total liabilities Total liabilities Liabilities Business Combination Business Combination Disclosure [Text Block] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Foreign tax rate differential Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent Provisions for Doubtful Accounts SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense Tax Credit Carryforward Expiry In 2024 Tax Credit Carryforward, Expires 2024 [Member] Tax Credit Carryforward, Expires 2024 [Member] Other Commitments [Axis] Other Commitments [Axis] Forfeited or expired Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Counterparty Name [Domain] Counterparty Name [Domain] Other Commitments Other Commitments [Table Text Block] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Multiemployer Plans Type [Domain] Multiemployer Plans Type [Domain] Cash, Cash Equivalents, and Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] 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 Total customer contract liabilities Total Customer Contract Liabilities Total Customer Contract Liabilities Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Employment Contracts Employment Contracts [Member] Retirement Plan Name [Domain] Retirement Plan Name [Domain] Equity, Class of Treasury Stock Equity, Class of Treasury Stock [Line Items] Construction in progress Construction in Progress, Gross AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Redemption Note Accumulated Gain (Loss), Financial Liability, Fair Value Option, Attributable to Parent [Member] 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. Weighted Average Grant Date Fair Value: Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] 2024 Other Commitment, Due in Fourth Year Long-Lived Assets Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Total Wynn Resorts, Limited stockholders' equity (deficit) Stockholders' Equity Attributable to Parent Concentration Risk Type [Domain] Concentration Risk Type [Domain] Local Phone Number Local Phone Number Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Deferred tax assets, net Deferred Tax Assets, Net of Valuation Allowance Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Land and improvements Land Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Fair Value Measurements Fair Value Disclosures [Text Block] Subsidiary Issuer Subsidiary Issuer [Member] Foreign currency translation Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Valuation Allowance by Deferred Tax Asset [Axis] Valuation Allowance by Deferred Tax Asset [Axis] Valuation Allowance [Table] Valuation Allowance [Table] Floor rate Derivative, Floor Interest Rate Change in other gaming related liabilities Change in other gaming related liabilities Change in other gaming related liabilities Finite-lived intangible assets, gross Finite-Lived Intangible Assets, Gross Cash paid for interest, net of amounts capitalized Interest Paid, Excluding Capitalized Interest, Operating Activities Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] 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 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]. 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 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 Equity Component [Domain] Equity Component [Domain] Lease liability Deferred Tax Asset, Lease Liability Deferred Tax Asset, Lease Liability Expected term (years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Customer deposits Increase (Decrease) in Contract with Customer, Liability Employee contribution percentage Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Deferred tax assets, gross Deferred Tax Assets, Gross Consolidated Entities [Domain] Consolidated Entities [Domain] Gain Contingency, Nature [Domain] Gain Contingency, Nature [Domain] Disallowed interest expense carryforwards Disallowed Interest Expense Carryforwards [Member] Disallowed Interest Expense Carryforwards 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 Retirement Plan Name [Axis] Retirement Plan Name [Axis] Change in Redemption Note fair value Change in Redemption Note fair value Fair Value Adjustment of Debt Fair Value Adjustment of Debt Maximum consolidated senior secured net leverage ratio Debt Instrument, Covenant Terms, Maximum Consolidated Senior Secured Net Leverage Ratio Debt Instrument, Covenant Terms, Maximum Consolidated Senior Secured Net Leverage Ratio Variable Interest Entity Disclosure Variable Interest Entity Disclosure [Text Block] Retail Term Loan, due 2025 Retail Term Loan, Due 2025 Retail Term Loan Agreement [Member] Retail Term Loan Agreement [Member] Functional area square footage under construction Functional Area Square Footage Under Construction Functional Area Square Footage Under Construction Number of rooms in hotel Number Of Rooms In Hotel Number Of Rooms In Hotel