Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Property, Plant and Equipment [Abstract] Schedule of Property and Equipment, Net Property, Plant and Equipment [Table Text Block] Receivables [Abstract] 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] Casino Casino [Member] Casino [Member] Hotel Hotel [Member] Retail leases and other Retail Leases And Other [Member] Retail Leases And Other [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Receivables, gross Accounts Receivable, Gross, Current Less: allowance for doubtful accounts Allowance for Doubtful Accounts Receivable, Current Receivables, net Receivables, Net, Current Equity [Abstract] Accumulated Other Comprehensive Income Comprehensive Income (Loss) Note [Text Block] Earnings Per Share [Abstract] Earnings Per Share Earnings Per Share [Text Block] Noncontrolling Interest [Abstract] Noncontrolling Interest Noncontrolling Interest Disclosure [Text Block] Organization Consolidation And Presentation Of Financial Statements Disclosure [Table] Organization, Consolidation and Presentation of Financial Statements Disclosure [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Macau Operations Wynn Macau [Member] Wynn Macau [Member] Las Vegas Wynn Las Vegas [Member] Wynn Las Vegas [Member] Wynn Palace Wynn Palace [Member] Wynn Palace [Member] Business Segments Segments [Axis] Segments [Domain] Segments [Domain] Meeting and convention Inperson Committee Meeting [Member] In-person Committee Meeting [Member] Retail Retail [Member] Retail [Member] Salon and Spa Salon And Spa [Member] Salon And Spa [Member] Pool Pool [Member] Pool [Member] Food and beverage Food And Beverage [Member] Food And Beverage [Member] Showrooms Showrooms [Member] Showrooms [Member] Nightclubs Nightclubs [Member] Nightclubs [Member] Organization and Basis of Presentation [Line Items] Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] Organization and Basis of Presentation [Abstract] Organization, Consolidation and Presentation of Financial Statements [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 real estate property Area of Real Estate Property Accounting Policies [Abstract] Estimated Retail Value of Promotional Allowance Estimated Retail Value of Promotional Allowance [Table Text Block] Estimated Retail Value of Promotional Allowance Summary of Estimated Cost of Promotional Allowances Summary Of Estimated Cost Of Promotional Allowance [Table Text Block] Summary of estimated cost of promotional allowance. Schedule of Assets and Liabilities Carried at Fair Value Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of Shares used in Calculation of Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] 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' deficit Parent Company [Member] Common stock Common Stock [Member] Treasury stock Treasury Stock [Member] Additional paid-in capital Additional Paid-in Capital [Member] Accumulated other comprehensive income AOCI Attributable to Parent [Member] Retained earnings Retained Earnings [Member] Noncontrolling interest 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 Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Beginning balance (in shares) Common Stock, Shares, Outstanding Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Net unrealized gain on investment securities Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Shares repurchased by the Company and held as treasury shares Treasury Stock, Value, Acquired, Cost Method Shares repurchased by the Company and held as treasury shares (in shares) Treasury Stock, Shares, Acquired Issuance of restricted stock Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Shares of subsidiary repurchased for share award plan Shares of Subsidiary Repurchased for Share Award Plan Amount of cash outflow by majority owned subsidiary for the repurchase of its shares used in employee share award plan Issuance of restricted stock (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Cash dividends declared Dividends, Cash Excess tax benefits from stock-based compensation Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation Stock-based compensation Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Ending balance Ending balance (in shares) Segment Reporting [Abstract] 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 Other Macau Other Macau [Member] Other Macau [Member] Las Vegas Operations Corporate and other Corporate and Other [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Assets Assets Investments, Debt and Equity Securities [Abstract] 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] U.S. government agency bonds Agency Securities [Member] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Other than Temporary Impairment Losses, Investments Other than Temporary Impairment Losses, Investments Amortized cost Available-for-sale Securities, Amortized Cost Basis Gross unrealized gains Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax Gross unrealized losses Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax Fair value (net carrying amount) Available-for-sale Securities Investment Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] 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] Stock-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Summary of Receivables, Net Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Receivables, net Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Income Statement [Abstract] Operating revenues: Revenues [Abstract] Casino Casino Revenue Rooms Occupancy Revenue Food and beverage Food and Beverage Revenue Entertainment, retail and other Entertainment Retail And Other Revenue Revenue earned during the period from shows, retail outlets, convention space, spa, salon, wedding salon, golf course and other. Gross revenues Gross Revenue Aggregate revenue earned from hotel, casino, food and beverage, entertainment, retail, and other operations. This amount includes the retail value of complimentary provided on a routine basis as part of our normal day to day operations. Less: promotional allowances Promotional Allowances Net revenues Revenue, Net Operating costs and expenses: Costs and Expenses [Abstract] Casino Casino Expenses Rooms Occupancy Costs Food and beverage Food and Beverage, Cost of Sales Entertainment, retail and other Entertainment Retail And Other Costs Costs incurred during the period related to generating revenue from shows, retail outlets, convention space, spa, salon, wedding salon, golf course, and other operations. General and administrative Selling, General and Administrative Expense Provision for doubtful accounts Provision for Doubtful Accounts Pre-opening costs Pre-Opening Costs Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction 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 costs and expenses Costs and Expenses Operating income Operating Income (Loss) Other income (expense): Nonoperating Income (Expense) [Abstract] Interest income Investment Income, Interest Interest expense, net of amounts capitalized Interest Expense Change in interest rate swap fair value Gain (Loss) on Derivative Instruments, Net, Pretax Decrease in Redemption Note fair value Fair Value Adjustment of Debt Fair Value Adjustment of Debt Loss on extinguishment of debt Losses On Extinguishment Of Debt Amount represents (1) the difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity and/or (2) the write-off of amounts capitalized as deferred financing costs associated with the extinguishment prior to maturity. Equity in income (loss) from unconsolidated affiliates Income (Loss) from Equity Method Investments Other Other Nonoperating Income (Expense) Other income (expense), net Nonoperating Income (Expense) Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Benefit (provision) for income taxes Income Tax Expense (Benefit) Net income Less: net income attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Net income attributable to Wynn Resorts, Limited Net Income (Loss) Attributable to Parent Basic and diluted income per common share: Earnings Per Share, Basic and Diluted [Abstract] Net income attributable to Wynn Resorts, Limited: Basic (in dollars per share) Earnings Per Share, Basic Diluted (in dollars per share) Earnings Per Share, Diluted Weighted average common shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Dividends declared per common share (in dollars per share) Common Stock, Dividends, Per Share, Declared Related Party Transactions [Abstract] 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 Number of reportable segments Number of Reportable Segments Organization and Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies [Table] Commitments And Contingencies [Table] Commitments and Contingencies [Table] Litigation Status [Axis] Litigation Status [Axis] Litigation Status [Domain] Litigation Status [Domain] Pending Litigation Pending Litigation [Member] Litigation Case [Axis] Litigation Case [Axis] Litigation Case [Domain] Litigation Case [Domain] Redemption Action and Counterclaim Redemption Action and Counterclaim [Member] Redemption Action and Counterclaim [Member] Derivative Claims Derivative Claims [Member] Derivative Claims [Member] Jurisdiction [Axis] Jurisdiction [Axis] Statutory Accounting Practices, Jurisdiction [Domain] Statutory Accounting Practices, Jurisdiction [Domain] United States District Court, District of Nevada United States District Court, District of Nevada [Member] United States District Court, District of Nevada [Member] Eighth Judicial District Court of Clark County, Nevada Eighth Judicial District Court of Clark County, Nevada [Member] Eighth Judicial District Court of Clark County, Nevada [Member] Payments For Leases By Third Parties [Axis] Payments For Leases By Third Parties [Axis] Payments for Leases by Third Parties [Axis] Payments For Leases By Third Parties [Domain] Payments For Leases By Third Parties [Domain] Payments for Leases by Third Parties [Domain] Cotai Development and Land Concession Contract Cotai Development And Land Concession Contract [Member] Cotai Development And Land Concession Contract [Member] Pre Construction Completion Payments Pre Construction Completion Payments [Member] Pre Construction Completion Payments [Member] Post Construction Completion Payments Post Construction Completion Payments [Member] Post Construction Completion Payments [Member] Contract Termination [Axis] Contract Termination [Axis] Contract Termination [Axis] Contract Termination [Domain] Contract Termination [Domain] Contract Termination [Domain] Directors Director [Member] Aruze United States Of America Inc Aruze United States Of America Inc [Member] Aruze United States Of America Inc [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] 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] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Guarantee Obligations Guarantee Obligations [Member] Commitments and Contingencies [Line Items] Commitments And Contingencies [Line Items] Commitments And Contingencies [Line Items] Quantity of land acquired (acres) Quantity Of Land Acquired Quantity of land acquired Land concession contract period (years) Land Concession Contract Period Land concession contract period Total land premium payable Total Land Premium Payable Total land premium payable Down payment of premium Down Payment Of Premium Down payment of premium Number of additional semi-annual payments Number Of Installments Number of Installments Individual semi-annual payment of premium (8 total) Semi Annual Payment Of Premium Semi Annual Payment Of Premium Rate of interest on premium Rate Of Interest On Premium Rate Of Interest On Premium Land premium payment obligation, current Land Premium Payment Obligation Current Land premium payment obligation current. Annual lease payments Additional Land Lease Payments Additional land lease payments. Guaranteed maximum price of contract Guaranteed Maximum Construction Price Guaranteed maximum construction price Bond as a percentage of guaranteed maximum price Performance Bond Rate Percentage of the guaranteed maximum price which the performance bond is for. Project costs incurred Project Costs Incurred Project costs incurred Project budget Estimated Cost Of Project Estimated Cost Of Project Percentage of shares voted in favor of removal of Mr. Okada Percentage Of Voting In Favor Of Removal Percentage Of Voting In Favor Of Removal Of Director Number of voted shares (over 86 mil) Common Stock Number Of Votes Common Stock Number Of Votes Common stock redeemed, shares Stock Redeemed or Called During Period, Shares Redemption price promissory note, principal amount Debt Instrument, Face Amount Long-term debt due date Debt Instrument, Maturity Date Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Period for an offer to repurchase notes after a change of control Debt Instrument, Call Period, Change of Control and Subsequent Credit Rating Condition Debt Instrument, Call Period, Change of Control and Subsequent Credit Rating Condition Debt purchase price percentage of aggregate principal amount Debt Purchase Price Percent Of Principal Amount Debt Purchase Price Percent Of Principal Amount Interest payment due Interest Expense, Long-term Debt Interim status update period Loss Contingency, Interim Status Update Period Loss Contingency, Interim Status Update Period Period for a stay of derivative action Loss Contingency, Period of Stay Loss Contingency, Period of Stay Number of derivative actions commenced in the U.S. District Court Loss Contingency, New Claims Filed, Number Period after dismissal of claim to file an amended complaint Loss Contingency, Period to Complete Court-Mandated Actions After Stay Loss Contingency, Period to Complete Court-Mandated Actions After Stay Number of gaming commissioners Number of Gaming Commissioners Number of Gaming Commissioners 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] Deferred Financing Costs Deferred Charges, 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] 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 Segment Information Segment Reporting 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 Capitalized Interest Adjustment 2014 Capitalized Interest Adjustment 2014 [Member] Capitalized Interest Adjustment 2014 Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Long-term Debt Long-term Debt [Member] Deposits and Other Assets Deposits and Other Assets [Member] Deposits and Other Assets [Member] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2015-03 Accounting Standards Update 2015-03 [Member] Accounting Standards Update 2015-03 [Member] Notes Payable, Other Payables Notes Payable, Other Payables [Member] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Prior Period Adjustment Restatement Adjustment [Member] Pro Forma Pro Forma [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Redemption Price Promissory Note 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] Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Summary of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Deferred financing costs, net Deferred Finance Costs, Noncurrent, Net Interest Costs Capitalized Adjustment Interest Costs Capitalized Adjustment Long-term debt Long-term Debt Percentage of ownership in joint ventures Equity Method Investment, Ownership Percentage Cash equivalents Cash Equivalents, at Carrying Value 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. Debt instrument, principal amount Gaming tax expenses Gaming Tax Expenses Gaming tax expense. Payments to Acquire Property, Plant, and Equipment Payments to Acquire Property, Plant, and Equipment Interest Expense Net income attributable to Wynn Resorts, Limited Earnings (Loss) Per Share, Basic Debt Disclosure [Abstract] Long-Term Debt Long-term Debt [Text Block] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Proceeds and excess tax benefit from share-based compensation Proceeds and Excess Tax Benefit from Share-based Compensation Tax exemption period Tax Exemption Period Tax Exemption Period Amount of complementary tax exemption Amount Of Complementary Tax Exemption Amount of complementary tax exemption Special gaming tax on gross revenue Special Gaming Tax On Gross Revenue Special Gaming Tax On Gross Revenue Annual complementary tax obligation Annual Complementary Tax Obligation Annual Complementary Tax Obligation Tax exemption period, extension Tax Exemption Period, Extension Tax Exemption Period, Extension Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Maximum Maximum [Member] Senior Term Loan Facility, Due September 2021 Senior Term Loan Facility, Due September 2021 [Member] Senior Term Loan Facility, Due September 2021 [Member] Senior Secured Revolving Credit Facility Revolving Credit Facility [Member] Senior Revolving Credit Facility, Due September 2020 Senior Revolving Credit Facility, Due September 2020 [Domain] Senior Revolving Credit Facility, Due September 2020 [Domain] 5 1/4% Wynn Macau 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] 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] Wynn Macau 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 Secured Debt Secured Debt [Member] Senior Notes Senior Notes [Member] Wynn America Credit Facilities Amended Wynn America Credit Facilities Amended [Member] Wynn America Credit Facilities Amended [Member] Mortgages Mortgages [Member] 5 1/4% Wynn Macau Senior Notes Due October 15, 2021 Five And Two Point Five Percentage Wynn Macau Senior Notes Due October Fifteen Twenty Twenty One [Member] Five And Two Point Five Percentage Wynn Macau Senior Notes Due October Fifteen Twenty Twenty One [Member] 4 1/4% Senior Notes, Due May 30, 2023 Four And One Over Four Percentage Wynn Las Senior Notes Due May Thirty Twenty Twenty Three [Member] Four And One Over Four Percentage Wynn Las Senior Notes Due May Thirty Twenty Twenty Three [Member] 5 1/2% Senior Notes, Due March 1, 2025 Five and One Half Percent Senior Notes Due March One Twenty Twenty Five [Member] Five and One Half Percent Senior Notes Due March One Twenty Twenty Five [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Long-term debt total Current portion of long-term debt Long-term Debt, Current Maturities Non current portion of long-term debt Long-term Debt, Excluding Current Maturities 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 Owned, 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 Property, Plant and Equipment, Net Related Party Transactions Related Party Transactions Disclosure [Text Block] Changes by Component in Accumulated Other Comprehensive Income Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Interest Rate Swaps Derivative Instruments and Hedging Activities Disclosure [Text Block] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] LIBOR or HIBOR LIBOR or HIBOR [Member] LIBOR or HIBOR [Member] First Mortgage Notes Due 2020 2020 First Mortgage Notes [Domain] 2020 First Mortgage Notes- Includes 7 7/8 % and 7 3/4% First Mortgage Notes due August, 2020 Wynn America Credit Facilities Wynn America Credit Facilities [Member] Wynn America Credit Facilities [Member] 7 7/8% Wynn Las Vegas First Mortgage Notes Due November 1, 2017 Seven and Seven Over Eight Percentage Wynn Las Vegas First Mortgage Notes Due November 1, 2017 [Member] 7 7/8% Wynn Las Vegas First Mortgage Notes Due November 1, 2017 [Member] Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Line of credit facility, remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Line of Credit Facility, Increase (Decrease), Other, Net Line of Credit Facility, Increase (Decrease), Other, Net Long-term line of credit Long-term Line of Credit Letters of credit outstanding Letters of Credit Outstanding, Amount Line of Credit Facility, Increase (Decrease), Net Line of Credit Facility, Increase (Decrease), Net Losses on extinguishment of debt Gains (Losses) on Extinguishment of Debt Payments of Debt Extinguishment Costs Payments of Debt Extinguishment Costs Extinguishment of Debt, Fees included in Gain (Loss) Extinguishment of Debt, Fees included in Gain (Loss) Extinguishment of Debt, Fees included in Gain (Loss) Repayments of Debt Repayments of Debt Write off of Deferred Debt Issuance Cost Write off of Deferred Debt Issuance Cost 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 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 Rooms [Member] Rooms [Member] Entertainment, retail and other Entertainment Retail And Other [Member] Entertainment Retail And Other [Member] General and administrative General And Administrative [Member] General And Administrative [Member] Pre-opening costs Pre-Open Costs [Member] Pre-Open Costs [Member] Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Stock-based compensation expense Allocated Share-based Compensation Expense Total stock-based compensation capitalized Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount Total stock-based compensation costs Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost Noncontrolling Interest [Table] Noncontrolling Interest [Table] Wynn Macau, Limited Wynn Macau, Limited [Member] Wynn Macau, Limited [Member] Noncontrolling Interest [Line Items] Noncontrolling Interest [Line Items] Dividends paid (HKD per share) Common Stock, Dividends, Per Share, Cash Paid Dividends paid Dividends, Common Stock Dividends paid to Wynn Resorts Proceeds from Dividends Received Reduction to noncontrolling interest Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Quoted Market Prices in Active Markets (Level 1) Fair Value, Inputs, Level 1 [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] Interest rate swaps (liability) Interest Rate Derivative Assets, at Fair Value Restricted cash Restricted Cash and Cash Equivalents Available-for-sale securities Liabilities: Liabilities, Fair Value Disclosure [Abstract] Redemption Note Debt Instrument, Fair Value Disclosure Interest rate swaps (asset) Interest Rate Derivative Liabilities, at Fair Value Property and Equipment, net Property, Plant and Equipment Disclosure [Text Block] Summary of Long-Term Debt Schedule of Long-term Debt Instruments [Table Text Block] London Interbank Offered Rate (LIBOR) London Interbank Offered Rate (LIBOR) [Member] Minimum Minimum [Member] 5 3/8% First Mortgage Notes, Due March 15, 2022 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 Debt Instrument, Interest Rate During Period Debt Instrument, Interest Rate During Period Subsequent Events [Abstract] Subsequent Events Subsequent Events [Text Block] 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 [Roll Forward] Changes in Accumulated Other Comprehensive Income [Roll Forward] Changes in Accumulated Other Comprehensive Income [Roll Forward] December 31, 2015 Accumulated Other Comprehensive Income (Loss), Net of Tax Current period other comprehensive income (loss) Other Comprehensive Income (Loss), before Reclassifications, Net of Tax June 30, 2016 Statement of Financial Position [Abstract] 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 Inventories Inventory, Net Prepaid expenses and other Prepaid Expense and Other Assets, Current Total current assets Assets, Current Property 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 Investment in unconsolidated affiliates Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures 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 land concession obligation Customer deposits Customer Deposits, Current Gaming taxes payable Gaming Taxes Payable Current Carrying amount as of the balance sheet date for taxes payable (due within one year or within one normal operating cycle, if longer) based on gross gaming revenue in the jurisdictions in operation, subject to applicable jurisdictional adjustments. Accrued compensation and benefits Employee-related Liabilities, Current Accrued interest Interest Payable, Current Other accrued liabilities Other Accrued Liabilities, Current Total current liabilities Liabilities, Current Long-term debt Other long-term liabilities Other Liabilities, Noncurrent Deferred income taxes, net Deferred Tax Liabilities, Net, Noncurrent Total liabilities Liabilities Commitments and contingencies (Note 13) 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; 114,949,209 and 114,610,441 shares issued; 101,790,911 and 101,571,909 shares outstanding, respectively Common Stock, Value, Issued Treasury stock, at cost; 13,158,298 and 13,038,532 shares, respectively Treasury Stock, Value Additional paid-in capital Additional Paid in Capital Accumulated other comprehensive income Retained earnings Retained Earnings (Accumulated Deficit) Total Wynn Resorts, Limited stockholders' deficit Stockholders' Equity Attributable to Parent Noncontrolling interest Stockholders' Equity Attributable to Noncontrolling Interest Total stockholders' equity Total liabilities and stockholders' equity Liabilities and Equity 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] Deferred income taxes Deferred Income Tax Expense (Benefit) Excess tax benefits from stock-based compensation Excess Tax Benefit from Share-based Compensation, Operating Activities Amortization of deferred financing costs and other Amortization of Financing Costs Loss on extinguishment of debt Provision for doubtful accounts 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. Equity in income of unconsolidated affiliates, net of distributions Income (Loss) from Equity Method Investments, Net of Dividends or Distributions Change in interest rate swap fair value Unrealized Gain (Loss) on Derivatives Decrease in Redemption Note fair value 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 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 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 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 provided by financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate on cash Effect of Exchange Rate on Cash and Cash Equivalents Cash and cash equivalents: Cash and Cash Equivalents, Period Increase (Decrease) [Abstract] Decrease 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 Stock-based compensation capitalized into construction 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 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 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 Promotional allowances estimated retail value Revenue from Hotels [Abstract] Rooms Promotional Allowances, Rooms Promotional Allowances, Rooms Food and beverage Promotional Allowances, Food and Beverage Promotional Allowances, Food and Beverage Entertainment, retail and other Promotional Allowances, Entertainment, Retail and Other Promotional Allowances, Entertainment, Retail and Other Total Promotional allowances estimated cost Direct Costs of Hotels [Abstract] Rooms Costs of Promotional Allowances, Rooms Costs of Promotional Allowances, Rooms Food and beverage Costs of Promotional Allowances, Food and Beverage Costs of Promotional Allowances, Food and Beverage Entertainment, retail and other Costs of Promotional Allowances, Entertainment, Retail and Other Costs of Promotional Allowances, Entertainment, Retail and Other Total Costs of Promotional Allowances Costs of Promotional Allowances 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] Preferred stock, par value (usd per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Common stock, par value (usd per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Common stock, shares outstanding Treasury stock, shares Treasury Stock, Shares 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 costs and expenses Other Cost and Expense, Operating Non-operating income and expenses Total other non-operating income and expenses Net Income (Loss) Attributable to Noncontrolling Interest WML Finance Credit Facility [Domain] WML Finance Credit Facility [Domain] WML Finance Credit Facility [Domain] Declared cash dividend Dividends Payable, Amount Per Share Loans Pledged as Collateral Margin owed for cash collateral Margin owed for cash collateral Statement of Comprehensive Income [Abstract] 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 Unrealized gain (loss) on investment securities, before and after tax Total comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Less: comprehensive income attributable to noncontrolling interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive income attributable to Wynn Resorts, Limited Comprehensive Income (Loss), Net of Tax, Attributable to Parent Numerator: Net Income (Loss) Available Common Stockholders, Basic And Diluted [Abstract] Net Income (Loss) Available Common Stockholders, Basic And Diluted [Abstract] 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) 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) Net income (loss) attributable to Wynn Resorts, Ltd. per common share, diluted (in dollars per share) Antidilutive securities excluded from computation of earnings per share (shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Interest Rate Swaps [Table] Interest Rate Swaps [Table] Interest Rate Swaps [Table] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Wynn Macau Swap Wynn Macau Swap [Member] Wynn Macau Swap [Member] Two of the swap agreements Interest Rate Swaps One [Member] Interest Rate Swaps One [Member] Interest Rate Swap 3 Interest Rate Swap Three [Member] Interest Rate Swap 3 [Member] Interest Rate Swaps [Line Items] Interest Rate Swaps [Line Items] Interest Rate Swaps [Line Items] Number of interest rate swap agreements Number of Interest Rate Derivatives Held Interest rate swap maturity date Derivative, Maturity Date 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]