Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Statement of Financial Position [Abstract] Preferred stock, par value (usd per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Common stock, par value (usd per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Common stock, shares outstanding Common Stock, Shares, Outstanding Treasury stock, shares Treasury Stock, Shares Segment Reporting [Abstract] Number of reportable segments Number of Reportable Segments Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization and Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Statement of Comprehensive Income [Abstract] Net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Other comprehensive income (loss): Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax [Abstract] Foreign currency translation adjustments, before and after tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Unrealized gain (loss) on investment securities, before and after tax Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Total comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Less: comprehensive income (loss) attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive income (loss) attributable to Wynn Resorts, Limited Comprehensive Income (Loss), Net of Tax, Attributable to Parent Earnings Per Share [Abstract] Numerator: Net Income (Loss) Available Common Stockholders, Basic And Diluted [Abstract] Net Income (Loss) Available Common Stockholders, Basic And Diluted [Abstract] Net income (loss) attributable to Wynn Resorts, Limited Net Income (Loss) Attributable to Parent Denominator: Weighted Average Number Of Shares Outstanding, Basic And Diluted [Abstract] Weighted Average Number Of Shares Outstanding, Basic And Diluted [Abstract] Weighted average common shares outstanding (shares) Weighted Average Number of Shares Outstanding, Basic Potential dilutive effect of stock options and restricted stock (shares) Weighted Average Number Diluted Shares Outstanding Adjustment Weighted average common and common equivalent shares outstanding (shares) Weighted Average Number of Shares Outstanding, Diluted Earnings Per Share, Basic Earnings Per Share, Basic Net income attributable to Wynn Resorts, Ltd. per common share, diluted (in dollars per share) Earnings Per Share, Diluted Antidilutive securities excluded from computation of earnings per share (shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Segment Information Segment Reporting Disclosure [Text Block] Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] Redemption, Period One Debt Instrument, Redemption, Period One [Member] Redemption, Period Two Debt Instrument, Redemption, Period Two [Member] Change of Control Event Debt Instrument, Redemption, Period Three [Member] Consolidated Entities [Axis] Consolidated Entities [Axis] Entity or group of entities consolidated into reporting entity. Consolidated Entities [Domain] Consolidated Entities [Domain] [Domain] for Consolidated Entities [Axis] Subsidiary Issuer Subsidiary Issuer [Member] Extinguishment of Debt [Axis] Extinguishment of Debt [Axis] Extinguishment of Debt, Type [Domain] Extinguishment of Debt, Type [Domain] 5 3/8% First Mortgage Notes, Due March 15, 2022 Five And Three Over Eight Percentage Wynn Las Vegas First Mortgage Notes Due March Fifteen Two Thousand Twenty Two [Member] Five And Three Over Eight Percentage Wynn Las Vegas First Mortgage Notes Due March Fifteen Two Thousand Twenty Two [Member] WA Senior Term Loan Facility I, Due December 2021 WA Senior Term Loan Facility I, Due December 2021 [Member] WA Senior Term Loan Facility I, Due December 2021 [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Senior Secured Revolving Credit Facility Revolving Credit Facility [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] LIBOR or HIBOR LIBOR or HIBOR [Member] LIBOR or HIBOR [Member] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Wynn Macau Wynn Macau [Member] Wynn Macau [Member] Wynn Macau, Limited Wynn Macau, Limited [Member] Wynn Macau, Limited [Member] Wynn America Wynn America [Member] Wynn America [Member] Wynn Las Vegas, LLC and Wynn Las Vegas Capital Corp Wynn Las Vegas, LLC and Wynn Las Vegas Capital Corp [Member] Wynn Las Vegas, LLC and Wynn Las Vegas Capital Corp Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Senior Term Loan Facility, Due September 2021 Senior Term Loan Facility, Due September 2021 [Member] Senior Term Loan Facility, Due September 2021 [Member] WML Finance Credit Facility WML Finance Credit Facility [Domain] WML Finance Credit Facility [Domain] 5 1/4% Wynn Macau Limited Senior Notes Due October 15, 2021 Five And One Over Four Percentage Wynn Macau Senior Notes Due October Fifteen Two Thousand Twenty One [Member] Five And One Over Four Percentage Wynn Macau Senior Notes Due October Fifteen Two Thousand Twenty One [Member] 4 7/8% Wynn Macau Limited Senior Notes Due October 1, 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] 5 1/2% Wynn Macau Limited Senior Notes Due October 1, 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] Wynn America Credit Facilities Wynn America Credit Facilities [Member] Wynn America Credit Facilities [Member] WA Senior Term Loan Facility II WA Senior Term Loan Facility II [Member] WA Senior Term Loan Facility II [Member] WA Senior Term Loan Facility II Due December 2021 [Member] WA Senior Term Loan Facility II Due December 2021 [Member] WA Senior Term Loan Facility II Due December 2021 [Member] WA Senior Revolving Credit Facility Due December 2021 [Member] WA Senior Revolving Credit Facility Due December 2021 [Member] WA Senior Revolving Credit Facility Due December 2021 [Member] 5 1/4% Senior Notes, Due May 15, 2027 5.14% Senior Notes, Due May 15, 2027 [Member] 5.14% Senior Notes, Due May 15, 2027 [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Secured Debt Secured Debt [Member] Senior Notes Senior Notes [Member] Mortgages Mortgages [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Scenario, Forecast Scenario, Forecast [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Line of credit facility, remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Margin to stated interest rate Margin owed for cash collateral Margin owed for cash collateral Notes under tender offer, face amount redeemed Notes Under Tender Offer Face Amount Redeemed Notes Under Tender Offer, Face Amount Redeemed Extinguishment of debt, amount premium Extinguishment Of Debt, Amount Premium Extinguishment of Debt, Amount Premium Current portion of senior notes Senior Notes, Current Redemption of principal amount of debt Early Repayment of Senior Debt Loss on extinguishment of debt Gain (Loss) on Extinguishment of Debt Debt instrument, face amount Debt Instrument, Face Amount Debt instrument, maximum percentage redeemable using proceeds from equity offerings Debt Instrument, Redemption Percentage, Redeemable From Cash Proceeds From Equity Offerings, Maximum Debt Instrument, Redemption Percentage, Redeemable From Cash Proceeds From Equity Offerings, Maximum Debt instrument, redemption price, percentage Debt Instrument, Redemption Price, Percentage Letters of credit outstanding Letters of Credit Outstanding, Amount Quarterly installment payment Debt Instrument, Periodic Payment Debt instrument, final principal payment Debt Instrument, Annual Principal Payment Debt instrument, covenant, percentage of total assets Debt Instrument, Covenant, Percentage of Total Assets Debt Instrument, Covenant, Percentage of Total Assets Extinguishment of debt, amount Extinguishment of Debt, Amount Fair value, excluding the redemption note Debt Instrument, Fair Value, Excluding The Redemption Note Debt Instrument, Fair Value, Excluding The Redemption Note Long-term debt excluding Redemption Note, debt issuance cost, original issue discount and premium Long Term Debt Excluding Redemption Note, debt issuance cost, original issue discount and premium Long Term Debt Excluding Redemption Note, debt issuance cost, original issue discount and premium Commitments and Contingencies [Table] Commitments And Contingencies [Table] Commitments and Contingencies [Table] Construction Performance Bond [Member] Construction Performance Bond [Member] Construction Performance Bond [Member] Litigation Status [Axis] Litigation Status [Axis] Litigation Status [Domain] Litigation Status [Domain] Pending Litigation Pending Litigation [Member] Litigation Case [Axis] Litigation Case [Axis] Litigation Case [Domain] Litigation Case [Domain] Derivative Claims Derivative Claims [Member] Derivative Claims [Member] Contract Termination [Axis] Contract Termination [Axis] Contract Termination [Axis] Contract Termination [Domain] Contract Termination [Domain] Contract Termination [Domain] Directors Director [Member] Wynn MA, LLC [Member] Wynn MA, LLC [Member] Wynn MA, LLC [Member] Aruze United States Of America Inc Aruze United States Of America Inc [Member] Aruze United States Of America Inc [Member] Wynn Palace Wynn Palace [Member] Wynn Palace [Member] 4 1/4% Wynn Las Vegas Senior Notes Due May 30, 2023 Four And One Over Four Percentage Wynn Las Vegas Senior Notes Due May Thirty Two Thousand Twenty Three [Member] Four And One Over Four Percentage Wynn Las Vegas Senior Notes Due May Thirty Two Thousand Twenty Three [Member] 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] 2023 Indenture Two thousand twenty three indenture [Member] Two thousand twenty three indenture [Member] Commitments and Contingencies [Line Items] Commitments And Contingencies [Line Items] Commitments And Contingencies [Line Items] Guaranteed maximum price of contract Guaranteed Maximum Construction Price Guaranteed maximum construction price Wynn Boston Harbor Performance Bond Performance Bond Performance Bond Percentage of shares voted in favor of removal of Mr. Okada Percentage Of Voting In Favor Of Removal Percentage Of Voting In Favor Of Removal Of Director Number of voted shares (over 86 mil) Common Stock Number Of Votes Common Stock Number Of Votes Common stock redeemed, shares Stock Redeemed or Called During Period, Shares Redemption price promissory note, principal amount Long-term debt due date Debt Instrument, Maturity Date Debt purchase price percentage of aggregate principal amount Debt Purchase Price Percent Of Principal Amount Debt Purchase Price Percent Of Principal Amount Interest payment due Interest Expense, Long-term Debt Number of derivative actions commenced in the U.S. District Court Loss Contingency, New Claims Filed, Number Property, Plant and Equipment [Abstract] Property and Equipment, net Property, Plant and Equipment Disclosure [Text Block] Equity Method Investments and Joint Ventures [Abstract] Retail Joint Venture Variable Interest Entity Disclosure [Text Block] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Operating Segments [Member] Operating Segments [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Macau MACAU Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Other Macau Other Macau [Member] Other Macau [Member] Las Vegas Operations Wynn Las Vegas [Member] Wynn Las Vegas [Member] Wynn Boston Harbor Wynn Boston Harbor [Member] Wynn Boston Harbor [Member] Corporate and other Corporate and Other [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Assets Assets LIBOR London Interbank Offered Rate (LIBOR) [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Wynn Macau Senior Revolving Credit Facility, Due September 2020 Senior Revolving Credit Facility, Due September 2020 [Domain] Senior Revolving Credit Facility, Due September 2020 [Domain] Senior Term Loan Facility, Various Maturities Senior Term Loan Facility, Variable Rate, Various Maturities [Member] Senior Term Loan Facility, Variable Rate, Various Maturities [Member] 5 1/2% Senior Notes, Due March 1, 2025 Five and One Half Percent Senior Notes Due March One Twenty Twenty Five [Member] Five and One Half Percent Senior Notes Due March One Twenty Twenty Five [Member] 5 1/4% Senior Notes, Due May 15, 2027 Redemption Price Promissory Note Promissory Notes Notes Payable, Other Payables [Member] Unamortized debt issuance cost and original issuance discount Unamortized debt issuance and original issuance discount (premium) Unamortized debt issuance costs and original issuance discount or premium Interest in addition to LIBOR Debt Instrument, Basis Spread on Variable Rate Interest rate during period Debt Instrument, Interest Rate During Period Change in Redemption Note fair value Fair Value Adjustment of Debt Fair Value Adjustment of Debt Document And Entity Information [Abstract] Document And Entity Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Trading Symbol Trading Symbol Equity [Abstract] Changes by Component in Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Summary of Operations by Segment Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Summary of Assets by Segment Reconciliation of Assets from Segment to Consolidated [Table Text Block] Income Tax Disclosure [Abstract] Benefit (provision) for income taxes Income Tax Expense (Benefit) Tax exemption period Tax Exemption Period Tax Exemption Period Payment exempt Amount Of Complementary Tax Exemption Amount of complementary tax exemption Annual complementary tax obligation Annual Complementary Tax Obligation Annual Complementary Tax Obligation ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Investment securities Short-term Investments Receivables, net Receivables, Net, Current Inventories Inventory, Net Prepaid expenses and other Prepaid Expense and Other Assets, Current Total current assets Assets, Current Property and equipment, net Property, Plant and Equipment, Net Restricted cash Restricted Cash and Cash Equivalents, Noncurrent Investment securities Marketable Securities, Noncurrent Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Other assets Other Assets, Noncurrent Total assets LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts and construction payables Accounts Payable, Current Current portion of long-term debt Long-term Debt, Current Maturities Customer deposits Customer Deposits, Current Gaming taxes payable Gaming Taxes Payable Current Carrying amount as of the balance sheet date for taxes payable (due within one year or within one normal operating cycle, if longer) based on gross gaming revenue in the jurisdictions in operation, subject to applicable jurisdictional adjustments. Accrued compensation and benefits Employee-related Liabilities, Current Accrued interest Interest Payable, Current Other accrued liabilities Other Accrued Liabilities, Current Total current liabilities Liabilities, Current Long-term debt Long-term Debt, Excluding Current Maturities Other long-term liabilities Other Liabilities, Noncurrent Deferred income taxes, net Deferred Tax Liabilities, Net, Noncurrent Total liabilities Liabilities Commitments and contingencies (Note 14) Commitments and Contingencies Stockholders' equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Preferred stock, par value $0.01; 40,000,000 shares authorized; zero shares issued and outstanding Preferred Stock, Value, Issued Common stock, par value $0.01; 400,000,000 shares authorized; 116,113,032 and 115,036,945 shares issued; 102,782,543 and 101,799,471 shares outstanding, respectively Common Stock, Value, Issued Treasury stock, at cost; 13,330,489 and 13,237,474 shares, respectively Treasury Stock, Value Additional paid-in capital Additional Paid in Capital Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Retained earnings Retained Earnings (Accumulated Deficit) Total Wynn Resorts, Limited stockholders' equity Stockholders' Equity Attributable to Parent Noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest Total stockholders' equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities and stockholders' equity Liabilities and Equity Land and improvements Land Buildings and improvements Buildings and Improvements, Gross Furniture, fixtures and equipment Furniture and Fixtures, Gross Leasehold interests in land Leasehold Interest In Land Gross Leasehold interest in land, gross Airplanes Flight Equipment, Gross Construction in progress Construction in Progress, Gross Property and equipment, gross Property, Plant and Equipment, Gross Less: accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property and equipment, net Related Party Transactions [Abstract] Related Party Transactions Related Party Transactions Disclosure [Text Block] Receivables [Abstract] Receivables, net Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Accounting Policies [Abstract] Estimated Retail Value of Promotional Allowance Estimated Retail Value of Promotional Allowance [Table Text Block] Estimated Retail Value of Promotional Allowance Estimated Cost of Promotional Allowances Estimated Cost Of Promotional Allowance [Table Text Block] Summary of estimated cost of promotional allowance. Schedule of Assets and Liabilities Carried at Fair Value Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Accumulated Other Comprehensive Income (Loss) Comprehensive Income (Loss) Note [Text Block] Annual credit for personal usage of aircraft Annual credit for personal use aircraft Annual credit of which Mr. Wynn will not be required to reimburse the Company for the aggregate incremental costs of certain flights pursuant to time sharing agreement. Amount due to officers and directors Due to Officers or Stockholders Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Summary of Total Compensation Cost Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Long-term debt total Long-term Debt Current portion of long-term debt Non current portion of long-term debt Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Total Wynn Resorts, Ltd. stockholders' equity Parent [Member] Common stock Common Stock [Member] Treasury stock Treasury Stock [Member] Additional paid-in capital Additional Paid-in Capital [Member] Accumulated other comprehensive income (loss) AOCI Attributable to Parent [Member] Retained earnings Retained Earnings [Member] Noncontrolling interests Noncontrolling Interest [Member] Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance Beginning balance (in shares) Effect of change in accounting for stock-based compensation Cumulative Effect of New Accounting Principle in Period of Adoption Balances, December 31, 2016, as adjusted Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance Currency translation adjustment Net unrealized gain on investment securities Issuance of restricted stock Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Issuance of restricted stock (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Cancellation of restricted stock (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Forfeited Exercise of stock options (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Shares repurchased by the Company and held as treasury shares Treasury Stock, Value, Acquired, Cost Method Shares repurchased by the Company and held as treasury shares (in shares) Treasury Stock, Shares, Acquired Cash dividends declared Dividends, Cash Distribution to noncontrolling interest Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Stock-based compensation Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Ending balance Ending balance (in shares) Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Measurement Frequency Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Fair Value, Measurements, Recurring Fair Value, Measurements, Recurring [Member] Fair Value, Hierarchy Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Quoted Market Prices in Active Markets (Level 1) Fair Value, Inputs, Level 1 [Member] Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Assets: Assets, Fair Value Disclosure [Abstract] Cash equivalents Cash Equivalents, at Carrying Value Available-for-sale securities Available-for-sale Securities Restricted cash Restricted Cash and Cash Equivalents Interest rate swaps (asset) Interest Rate Derivative Assets, at Fair Value Liabilities: Liabilities, Fair Value Disclosure [Abstract] Redemption Note Debt Instrument, Fair Value Disclosure Statement of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Deferred income taxes Deferred Income Tax Expense (Benefit) Stock-based compensation expense Allocated Share-based Compensation Expense Excess tax benefits from stock-based compensation Excess Tax Benefit from Share-based Compensation, Operating Activities Amortization of deferred financing costs Amortization of Debt Issuance Costs (Benefit) provision for doubtful accounts Provision for Doubtful Accounts Change in interest rate swap fair value Unrealized Gain (Loss) on Derivatives Change in Redemption Note fair value 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. Increase (decrease) in cash from changes in: Increase (Decrease) in Operating Capital [Abstract] Receivables, net Increase (Decrease) in Receivables Inventories and prepaid expenses and other Increase Decrease In Inventories Prepaid Expenses And Other Current Assets The net change during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities, the net change during the reporting period in the amount of outstanding money paid in advance for goods or services that bring economic benefits for future periods and the net change during the reporting period in other operating assets not otherwise defined in the taxonomy. Customer deposits Increase (Decrease) in Customer Deposits Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Capital expenditures, net of construction payables and retention Payments to Acquire Property, Plant, and Equipment Return of investment in unconsolidated affiliates Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital Purchase of investment securities Payments to Acquire Available-for-sale Securities, Debt Proceeds from sale or maturity of investment securities Proceeds from Sale and Maturity of Marketable Securities Purchase of intangible assets and other assets Payments for (Proceeds from) Other Investing Activities Proceeds from sale of assets Proceeds from Sale of Productive Assets Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from exercise of stock options Proceeds from Stock Options Exercised Excess tax benefits from stock-based compensation Excess Tax Benefit from Share-based Compensation, Financing Activities Dividends paid Payments of Dividends Distribution to noncontrolling interest Payments of Ordinary Dividends, Noncontrolling Interest Proceeds from issuance of long-term debt Proceeds from Issuance of Long-term Debt Repayments of long-term debt Repayments of Long-term Debt Restricted cash Proceeds from (Repayments of) Restricted Cash, Financing Activities Repurchase of common stock Payments for Repurchase of Common Stock Incometaxespaidfromsaleofownershipinterestinsubsidiary Incometaxespaidfromsaleofownershipinterestinsubsidiary Income taxes paid from a combination of transactions in which noncurrent assets are sold, which may include the sale of a business, an investment in an affiliate (including an equity method investee), property, plant and equipment and intangible assets. Excludes sales of trading, available-for-sale, and held-to-maturity securities. 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 Payment on long-term land concession obligation Proceeds from (Payments for) Other Financing Activities Payments for financing costs Payments of Debt Issuance Costs Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate on cash Effect of Exchange Rate on Cash and Cash Equivalents Cash and cash equivalents: Cash and Cash Equivalents, Period Increase (Decrease) [Abstract] Increase (decrease) in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Balance, beginning of period Balance, end of period Supplemental cash flow disclosures: Supplemental Cash Flow Information [Abstract] Cash paid for interest, net of amounts capitalized Interest Paid, Net Capital Lease Obligations Incurred Capital Lease Obligations Incurred Stock-based compensation capitalized into construction Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount Liability settled with shares of common stock Stock Issued Change in accounts and construction payables related to property and equipment Change In Property And Equipment Included In Accounts And Construction Payables Change in Property and Equipment Included in Accounts and Construction Payables Change in dividends payable on unvested restricted stock included in other accrued liabilities Change in dividends payable on unvested restricted stock included in accrued liabilities Change in dividends payable on unvested restricted stock included in accrued liabilities Income Statement [Abstract] Operating revenues: Revenues [Abstract] Casino Casino Revenue Rooms Occupancy Revenue Food and beverage Food and Beverage Revenue Entertainment, retail and other Entertainment Retail And Other Revenue Revenue earned during the period from shows, retail outlets, convention space, spa, salon, wedding salon, golf course and other. Gross revenues Gross Revenue Aggregate revenue earned from hotel, casino, food and beverage, entertainment, retail, and other operations. This amount includes the retail value of complimentary provided on a routine basis as part of our normal day to day operations. Less: promotional allowances Promotional Allowances Net revenues Revenue, Net Operating expenses: Costs and Expenses [Abstract] Casino Casino Expenses Rooms Occupancy Costs Food and beverage Food and Beverage, Cost of Sales Entertainment, retail and other Entertainment Retail And Other Costs Costs incurred during the period related to generating revenue from shows, retail outlets, convention space, spa, salon, wedding salon, golf course, and other operations. General and administrative Selling, General and Administrative Expense (Benefit) provision for doubtful accounts Pre-opening Pre-Opening Costs 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. Total operating expenses Costs and Expenses Operating income Operating Income (Loss) Other income (expense): Nonoperating Income (Expense) [Abstract] Interest income Investment Income, Interest Interest expense, net of amounts capitalized Interest Expense Change in interest rate swap fair value Gain (Loss) on Derivative Instruments, Net, Pretax Loss on extinguishment of debt Equity in income from unconsolidated affiliates Income (Loss) from Equity Method Investments Other Other Nonoperating Income (Expense) Other income (expense), net Nonoperating Income (Expense) Income (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Net income (loss) Less: net (income) loss attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Net income (loss) attributable to Wynn Resorts, Limited Basic and diluted net income (loss) per common share: Earnings Per Share, Basic and Diluted [Abstract] Net income (loss) attributable to Wynn Resorts, Limited: Basic (in dollars per share) Diluted (in dollars per share) Weighted average common shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Diluted (in shares) Dividends declared per common share (in dollars per share) Common Stock, Dividends, Per Share, Declared Organization Consolidation And Presentation Of Financial Statements Disclosure [Table] Organization, Consolidation and Presentation of Financial Statements Disclosure [Table] Las Vegas Wynn Retail Wynn Retail [Member] Wynn Retail [Member] Casino Casino [Member] Casino [Member] Meeting and convention Inperson Committee Meeting [Member] In-person Committee Meeting [Member] Retail Retail [Member] Retail [Member] Food and beverage Food And Beverage [Member] Food And Beverage [Member] Theaters Showrooms [Member] Showrooms [Member] Nightclubs Nightclubs [Member] Nightclubs [Member] Organization and Basis of Presentation [Line Items] Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] Organization and Basis of Presentation [Abstract] Percentage of ownership Noncontrolling Interest, Ownership Percentage by Parent Number of hotel Number Of Hotel Towers Number of Hotel Towers Number of rooms in hotel Number Of Rooms In Hotel Number Of Rooms In Hotel Area of property Functional Area Square Footage Functional Area Square Footage. Number of restaurants Number of Restaurants Number of facilities Number Of Facilities Number of Facilities Number of outlets Number Of Food And Beverage Outlets Number Of Food And Beverage Outlets. Number of showrooms Number Of Showrooms Number of Showrooms. Area of property, currently under construction Functional Area Square Footage Under Construction Functional Area Square Footage Under Construction Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Subsequent Event [Line Items] Subsequent Event [Line Items] Declared cash dividend Dividends Payable, Amount Per Share Schedule of Shares used in Calculation of Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Stock-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Investment Securities Marketable Securities, Policy [Policy Text Block] Accounts Receivable and Credit Risk Trade and Other Accounts Receivable, Policy [Policy Text Block] Derivative Financial Instruments Derivatives, Policy [Policy Text Block] Redemption Price Promissory Note Redemption Price Promissory Note Policy [Policy Text Block] Redemption Price Promissory Note [Policy Text Block] Revenue Recognition and Promotional Allowances Revenue Recognition, Policy [Policy Text Block] Gaming Taxes Gaming Taxes Policy [Policy Text Block] Gaming Taxes Policy Fair Value Measurements Fair Value of Financial Instruments, Policy [Policy Text Block] Recently Issued and Adopted Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Earnings Per Share Earnings Per Share [Text Block] Investments, Debt and Equity Securities [Abstract] Due in one year or less Available For Sale Securities Debt Maturities Within One Year Of Balance Sheet Date Fair Value Amount of available-for-sale debt securities at fair value maturing within one year of the balance sheet date. Due after one year through two years Available For Sale Securities Debt Maturities After One Through Two Years Fair Value Available for Sale Securities, Debt Maturities, after One Through Two Years of Balance Sheet Date, Fair Value Due after two years through three years Available For Sale Securities Debt Maturities After Two Through Three Years Fair Value Available For Sale Securities Debt Maturities After Two Through Three Years Fair Value Fair value Available-for-sale Securities, Debt Securities Schedule of Product Information [Table] Schedule of Product Information [Table] Products and Services [Axis] Products and Services [Axis] Products and Services [Domain] Products and Services [Domain] Rooms [Member] Rooms [Member] Rooms [Member] Food And Beverage [Member] Entertainment Retail And Other [Member] Entertainment Retail And Other [Member] Entertainment Retail And Other [Member] Product Information [Line Items] Product Information [Line Items] Costs of Promotional Allowances Costs of Promotional Allowances Costs of Promotional Allowances Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Performance Shares Performance Shares [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Stock-based compensation costs Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost Noncontrolling Interest [Abstract] Noncontrolling Interest Noncontrolling Interest Disclosure [Text Block] Long-Term Debt Long-term Debt [Text Block] Schedule of Property and Equipment, Net Property, Plant and Equipment [Table Text Block] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Schedule of Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Rooms Entertainment, retail and other General and administrative General And Administrative [Member] General And Administrative [Member] Pre-opening Pre-Open Costs [Member] Pre-Open Costs [Member] Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Total stock-based compensation capitalized Total stock-based compensation costs Summary of Receivables, Net Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Promotional Allowances Investment Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Nature of Error [Axis] Nature of Error [Axis] Nature of Error [Domain] Nature of Error [Domain] Capitalized Interest Adjustment 2015 Capitalized Interest Adjustment 2015 [Member] Capitalized Interest Adjustment 2015 Restatement Adjustment Restatement Adjustment [Member] Notes Payable, Other Payables Summary of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Percentage of ownership in joint ventures Equity Method Investment, Ownership Percentage Bank deposits and cash on hand Cash Percentage of credit markers due from customers residing outside of the United States Percentage Of Credit Markers Due From Customers Residing Outside Of United States Percentage of credit markers due from customers residing outside of the United States. Long-term debt Gaming tax expenses Gaming Tax Expenses Gaming tax expense. Effect of change in accounting for stock-based compensation New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets Interest expense requiring adjustment to capitalized interest Interest Costs Capitalized Adjustment Interest expense Basic and diluted net income per share (in dollars per share) Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Retail Joint Venture Retail Joint Venture [Member] Retail Joint Venture [Member] New Joint Venture Corporate Joint Venture [Member] Schedule of Variable Interest Entities [Line Items] Schedule of Equity Method Investments [Line Items] Net book value of assets and liabilities transferred for joint venture Net Book Value Of Assets And Liabilities Transferred For Joint Venture The net book value of assets and liabilities associated with exiting Wynn Las Vegas retail stores transferred to the Retail Joint Venture. Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Joint venture, cash consideration received Joint Venture, Cash Consideration Received The cash consideration received for the ownership interest sold in the Retail Joint Venture. Joint venture note receivable Joint Venture Note Receivable Note receivable for the remaining consideration received for the ownership interest sold in the Retail Joint Venture. Present value of note present value of note Present value of interest-free note from Crown that matures on January 3, 2018. Proceeds from Divestiture of Interest in Joint Venture Proceeds from Divestiture of Interest in Joint Venture Assets Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets Liabilities Variable Interest Entity, Consolidated, Carrying Amount, Liabilities Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Major Types of Debt and Equity Securities Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] Domestic and foreign corporate bonds Domestic And Foreign Corporate Bonds [Member] Domestic And Foreign Corporate Bonds [Member] Commercial paper Commercial Paper, Not Included with Cash and Cash Equivalents [Member] Agency Securities [Member] Agency Securities [Member] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Amortized cost Available-for-sale Securities, Amortized Cost Basis Gross unrealized gains Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax Gross unrealized losses Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax Fair value (net carrying amount) Other than Temporary Impairment Losses, Investments Other than Temporary Impairment Losses, Investments Noncontrolling Interest [Table] Noncontrolling Interest [Table] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Subsidiaries Subsidiaries [Member] Noncontrolling Interest [Line Items] Noncontrolling Interest [Line Items] Dividends Dividends Proceeds from dividends received Proceeds from Dividends Received Decrease from distributions to noncontrolling interest Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Foreign currency translation Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Unrealized loss on investment securities Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward] Changes in Accumulated Other Comprehensive Income [Roll Forward] Changes in Accumulated Other Comprehensive Income [Roll Forward] December 31, 2016 Current period other comprehensive income (loss) Other Comprehensive Income (Loss), before Reclassifications, Net of Tax September 30, 2017 Summary of Long-Term Debt Schedule of Long-term Debt Instruments [Table Text Block] Macau Operations [Domain] Macau Operations [Domain] Macau Operations [Domain] Net revenues Adjusted Property EBITDA Adjusted Property Ebitda Earnings Before Interest, Taxes, Depreciation, Amortization, Pre-opening Costs, Property Charges And Other, Corporate Expenses, Stock-Based Compensation, And Other Non-Operating Income And Expenses And Includes Equity In Income From Unconsolidated Affiliates Other operating costs and expenses Other Operating Costs And Expenses [Abstract] Other Operating Costs and Expenses [Abstract] Corporate expenses and other Corporate Expenses And Other Corporate Expenses And Other Stock-based compensation Share-based Compensation Total other operating expenses Other Cost and Expense, Operating Non-operating income and expenses Loss on extinguishment of debt Total other non-operating income and expenses Net Income (Loss) Attributable to Noncontrolling Interest Subsequent Events Subsequent Events [Text Block] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Legal Entity of Counterparty, Type Legal Entity of Counterparty, Type [Axis] Legal Entity Type of Counterparty [Domain] Legal Entity Type of Counterparty [Domain] Hotel Hotel [Member] Other Retail Leases And Other [Member] Retail Leases And Other [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Receivables, gross Accounts Receivable, Gross, Current Less: allowance for doubtful accounts Allowance for Doubtful Accounts Receivable, Current Receivables, net Income Taxes Income Tax Disclosure [Text Block] Schedule of Investment Securities Available-for-sale Securities [Table Text Block] Investments by Contractual Maturity Date Investments Classified by Contractual Maturity Date [Table Text Block]