Accounts Notes And Loans Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts Notes Loans And Financing Receivables By Legal Entity Of Counterparty Type [Axis] Legal Entity of Counterparty, Type [Axis] Accounts Payable Current Accounts and construction payable Accounts Receivable Gross Current Receivables, gross Accrued Income Taxes Current Income taxes payable Accumulated Depreciation Depletion And Amortization Property Plant And Equipment Less: accumulated depreciation Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax Unrealized Gain/loss on securities, June 30, 2012 Unrealized Gain/loss on securities, December 31, 2011 Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax Foreign currency translation, June 30, 2012 Foreign currency translation, December 31, 2011 Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income Loss [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income Loss Net Of Tax Accumulated other comprehensive income, June 30, 2012 Accumulated other comprehensive income, December 31, 2011 Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income Loss [Table] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income [Member] Accumulated other comprehensive income Acquisition Costs Payment under land concession contract Additional land lease payments. Additional Land Lease Payments Annual lease payments Additional Paid In Capital Additional paid-in capital Additional Paid In Capital [Member] Additional paid-in capital Adjusted Property EBITDA Adjusted Property Ebitda Adjusted Property EBITDA Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value Stock-based compensation Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation Excess tax benefits from stock-based compensation Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Advertising Costs Policy [Text Block] Advertising Costs Advertising Expense Total advertising costs Airplanes, gross Airplanes Gross Airplanes Allowance For Doubtful Accounts Receivable Current Less: allowance for doubtful accounts Amended Credit Facility [Member] Amended Credit Facility [Member] Amended Wynn Macau Credit Facilities Amendment Flag Amendment Flag Amortization of cash outflows paid to third parties in connection with debt origination, which will occur over the remaining maturity period of the associated long-term debt. Amortization Of Deferred Financing Costs Amortization and write-offs of deferred financing costs and other Amount of complementary tax exemption Amount Of Complementary Tax Exemption Amount of complementary tax exemption Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Anti-dilutive stock options excluded from the calculation of diluted earnings per share Aruze United States Of America, Inc [Member] Aruze United States Of America Inc [Member] Aruze USA, Inc. Assets Assets Total assets Assets [Abstract] ASSETS Assets Current Total current assets Assets Current [Abstract] Current assets: Available For Sale Securities Amortized Cost Available-for-sale securities, Amortized cost Available-for-sale Securities, Debt Maturities, After One Through Two Years, Amortized Cost Availableforsale Securities Debt Maturities After One Through Two Years Amortized Cost 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 Fair Value Due after one year through two years Available For Sale Securities Debt Maturities Amortized Cost Amortized Cost Available For Sale Securities Debt Maturities Amortized Cost [Abstract] Amortized Cost Available For Sale Securities Debt Maturities Fair Value [Abstract] Fair Value Amount of available-for-sale debt securities at cost, maturing within one year of the balance sheet date. Available For Sale Securities Debt Maturities Within One Year Of Balance Sheet Date Amortized Cost Due in one year or less Amount of available-for-sale debt securities at fair value maturing within one year of the balance sheet date. Available For Sale Securities Debt Maturities Within One Year Of Balance Sheet Date Fair Value Due in one year or less Available For Sale Securities Debt Securities Fair Value Available For Sale Securities Fair Value Disclosure Available-for-sale securities Available-for-sale securities, Fair value (net carrying amount) Availableforsale Securities Gross Unrealized Gain Available-for-sale securities, Gross unrealized gains Available For Sale Securities Gross Unrealized Losses 1 Available-for-sale securities, Gross unrealized losses Available For Sale Securities [Text Block] Schedule of Investment Securities Buildings And Improvements Gross Buildings and improvements Cash Cash in bank and cash on hand Cash And Cash Equivalents At Carrying Value Balance, end of period Balance, beginning of period Cash and cash equivalents Cash And Cash Equivalents Period Increase Decrease Increase in cash and cash equivalents Cash And Cash Equivalents Period Increase Decrease [Abstract] Cash and cash equivalents: Cash And Cash Equivalents Policy [Text Block] Cash and Cash Equivalents Cash Equivalents At Carrying Value Cash equivalents Cash Flow Supplemental Disclosures [Line Items] Cash Flow Supplemental Disclosures [Line Items] Supplemental Disclosure of Cash Flow Information [Line Items] Cash Flow Supplemental Disclosures [Table] Cash Flow Supplemental Disclosures [Table] Cash Flow Supplemental Disclosures [Table] Cash Flow Supplemental Disclosures [Text Block] Supplemental Disclosure of Cash Flow Information Casino Expenses Casino Casino [Member] Casino [Member] Casino Casino Revenue Casino Change in Accounting Estimate, Financial Effect, Net Income (Loss) Change In Accounting Estimate Financial Effect Net Income Loss Adjustment effect in net income Change in Accounting Estimate, Financial Effect, Net Income Loss Per Share, Diluted Change In Accounting Estimate Financial Effect Net Income Loss Per Share Diluted Adjustment effect in diluted earning per share Change in Operating Income Change In Operating Income Adjustment effect in operating income Change in Property and Equipment Included in Accounts and Construction Payables Change In Property And Equipment Included In Accounts And Construction Payables Change in construction payables and retention Commercial Paper Not Included With Cash And Cash Equivalents [Member] Commercial Paper Commitment For Additional Donation To Third Party Commitment For Additional Donation To Third Party Commitment for additional donations to be made Commitments And Contingencies Commitments and contingencies (Note 15) Commitments And Contingencies Disclosure [Text Block] Commitments and Contingencies Commitments and Contingencies [Line Items] Commitments And Contingencies [Line Items] Commitments and Contingencies [Line Items] Commitments and Contingencies [Table] Commitments And Contingencies [Table] Commitments and Contingencies [Table] Common Stock Dividends Per Share Declared Dividends declared per common share: Common Stock [Member] Common Stock Common Stock Par Or Stated Value Per Share Common stock, par value Common Stock Shares Authorized Common stock, shares authorized Common Stock Shares Issued Common stock, shares issued Common Stock Shares Outstanding Ending balance (in shares) Beginning balance (in shares) Common stock, shares outstanding Common Stock Value Common stock, par value $0.01; 400,000,000 shares authorized; 113,385,866 and 137,937,088 shares issued; 100,522,798 and 125,080,998 shares outstanding Complementary Tax Rate Complementary Tax Rate Complementary tax rate Component Of Operating Other Cost And Expense [Line Items] Property Charges and Other [Line Items] Component Of Other Operating Cost And Expense [Table] Component of Other Operating Cost and Expense [Table] Comprehensive Income Net Of Tax Comprehensive income attributable to Wynn Resorts, Limited Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest Less: Comprehensive income attributable to noncontrolling interest Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest Total comprehensive income Comprehensive Income Note [Text Block] Comprehensive Income Construction In Progress Gross Construction in progress Carrying value as of the balance sheet date of the amount retained from construction contract payments to ensure the contractor completes the construction before the retention is returned, within one year of the balance sheet date (or one operating cycle, if longer). Construction Retention Payables Current Construction retention Contract Payment Accrued Contract Payment Accrued Contract payment accrued Corporate And Other [Member] Corporate and Other Corporate Expenses And Other Corporate Expenses And Other Corporate expenses and other Costs And Expenses Total operating costs and expenses Costs And Expenses [Abstract] Operating costs and expenses: Cotai Development And Land Concession Contract [Member] Cotai Development And Land Concession Contract [Member] Cotai Development And Land Concession Contract Cotai Land Agreement [Member] Cotai Land Agreement [Member] Cotai Land Agreement Current Fiscal Year End Date Current Fiscal Year End Date Customer Deposits Current Customer deposits Debt Instrument Basis Spread On Variable Rate Interest in addition to LIBOR Spread on variable rate Debt Instrument Face Amount Debt instrument, principal amount Debt Instrument Fair Value Fair value of debt instrument Debt Instrument, Increase Decrease in Premium Debt Instrument Increase Decrease In Premium Debt premium decrease Debt Instrument Interest Rate Stated Percentage Debt instrument, interest rate Debt Instrument [Line Items] Debt Instrument [Line Items] Debt Instrument Maturity Date Long-term debt due date Debt Instrument, Maturity, Month and Year Debt Instrument Maturity Month And Year Maturity period Net book value of first mortgage notes. Debt Instrument Net Book Value Debt instrument net book value Debt Instrument Payment Terms Debt instrument payment terms Debt Instrument Previous Maturity Date Debt Instrument Previous Maturity Date Long-term debt previous due date Debt Instrument [Table] Schedule of Long-term Debt Instruments [Table] Debt Instrument Unamortized Discount Original issue discount Debt Purchase Price Percent Of Principal Amount Debt Purchase Price Percent Of Principal Amount Debt purchase price percentage of aggregate principal amount Debt redemption price as percentage of principal Debt Redemption Price As Percentage Of Principal Debt redemption price as percentage of principal Debt Type [Axis] Debt Type [Axis] Debt Type [Axis] Debt Type [Domain] Debt Type [Domain] Debt Type [Domain] Deferred Finance Costs Noncurrent Net Deferred financing costs, net Deferred Income Tax Expense Benefit Deferred income taxes Deferred Tax Liabilities Current Deferred income taxes, net Deferred Tax Liabilities Noncurrent Deferred income taxes, net Depreciation And Amortization Depreciation and amortization Derivative Contract Type [Domain] Derivative Contract Type [Domain] Derivative Fixed Interest Rate Interest rate swap fixed interest rate Derivative Instrument Fair Value Derivative Instrument Fair Value Interest Rate Swap Outstanding Derivative Instrument Risk [Axis] Derivative Instrument Risk Derivative Instruments And Hedging Activities Disclosure [Text Block] Interest Rate Swaps Derivative Maturity Dates Interest rate swap maturity date Derivative Swaption Interest Rate Interest rate swap interest rate Disclosure - Changes by Component in Accumulated Other Comprehensive Income [Abstract] Disclosure Changes By Component In Accumulated Other Comprehensive Income [Abstract] Disclosure - Changes by Component in Accumulated Other Comprehensive Income [Abstract] Disclosure - Commitment & Contingencies - Additional Information [Abstract] Disclosure Commitment Contingencies Additional Information [Abstract] Disclosure - Commitment & Contingencies - Additional Information [Abstract] Disclosure - Earnings Per Share - Additional Information [Abstract] Disclosure Earnings Per Share Additional Information [Abstract] Disclosure - Earnings Per Share - Additional Information [Abstract] Disclosure - Income Taxes - Additional Information [Abstract] Disclosure Income Taxes Additional Information [Abstract] Disclosure - Income Taxes - Additional Information [Abstract] Disclosure - Interest Rate Swaps - Additional Information [Abstract] Disclosure Interest Rate Swaps Additional Information [Abstract] Disclosure - Interest Rate Swaps - Additional Information [Abstract] Disclosure - Investments by Contractual Maturity [Abstract] Disclosure Investments By Contractual Maturity [Abstract] Disclosure - Investments by Contractual Maturity [Abstract] Disclosure - Long-Term Debt - Additional Information [Abstract] Disclosure Long Term Debt Additional Information [Abstract] Disclosure - Long-Term Debt - Additional Information [Abstract] Disclosure - Noncontrolling Interest - Additional Information [Abstract] Disclosure Noncontrolling Interest Additional Information [Abstract] Disclosure - Noncontrolling Interest - Additional Information [Abstract] Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Stock-Based Compensation Disclosure - Organization and Basis of Presentation - Additional Information [Abstract] Disclosure Organization And Basis Of Presentation Additional Information [Abstract] Disclosure - Organization and Basis of Presentation - Additional Information [Abstract] Disclosure - Property Charges and Other [Abstract] Disclosure Property Charges And Other [Abstract] Disclosure - Property Charges and Other [Abstract] Disclosure - Property Charges and Other - Additional Information [Abstract] Disclosure Property Charges And Other Additional Information [Abstract] Disclosure - Property Charges and Other - Additional Information [Abstract] Disclosure - Related Party Transactions - Additional Information [Abstract] Disclosure Related Party Transactions Additional Information [Abstract] Disclosure - Related Party Transactions - Additional Information [Abstract] Disclosure - Schedule of Assets and Liabilities Carried at Fair Value [Abstract] Disclosure Schedule Of Assets And Liabilities Carried At Fair Value [Abstract] Disclosure - Schedule of Assets and Liabilities Carried at Fair Value [Abstract] Disclosure - Schedule of Investment Securities [Abstract] Disclosure Schedule Of Investment Securities [Abstract] Disclosure - Schedule of Investment Securities [Abstract] Disclosure - Schedule of Property and Equipment, Net [Abstract] Disclosure Schedule Of Property And Equipment Net [Abstract] Disclosure - Schedule of Property and Equipment, Net [Abstract] Disclosure - Schedule of Shares Used in Calculation of Earnings Per Share [Abstract] Disclosure Schedule Of Shares Used In Calculation Of Earnings Per Share [Abstract] Disclosure - Schedule of Shares Used in Calculation of Earnings Per Share [Abstract] Disclosure - Stock-Based Compensation - Additional Information [Abstract] Disclosure Stock Based Compensation Additional Information [Abstract] Disclosure - Stock-Based Compensation - Additional Information [Abstract] Disclosure - Subsequent Events - Additional Information [Abstract] Disclosure Subsequent Events Additional Information [Abstract] Disclosure - Subsequent Events - Additional Information [Abstract] Disclosure - Summary of Assets by Segment [Abstract] Disclosure Summary Of Assets By Segment [Abstract] Disclosure - Summary of Assets by Segment [Abstract] Disclosure - Summary of Estimated Cost of Promotional Allowances [Abstract] Disclosure Summary Of Estimated Cost Of Promotional Allowances [Abstract] Disclosure - Summary of Estimated Cost of Promotional Allowances [Abstract] Disclosure - Summary of Long-Term Debt [Abstract] Disclosure Summary Of Long Term Debt [Abstract] Disclosure - Summary of Long-Term Debt [Abstract] Disclosure - Summary of Operations by Segment [Abstract] Disclosure Summary Of Operations By Segment [Abstract] Disclosure - Summary of Operations by Segment [Abstract] Disclosure - Summary of Receivables, Net [Abstract] Disclosure Summary Of Receivables Net [Abstract] Disclosure - Summary of Receivables, Net [Abstract] Disclosure - Summary of Significant Accounting Policies - Additional Information [Abstract] Disclosure Summary Of Significant Accounting Policies Additional Information [Abstract] Disclosure - Summary of Significant Accounting Policies - Additional Information [Abstract] Disclosure - Summary of Total Compensation Cost [Abstract] Disclosure Summary Of Total Compensation Cost [Abstract] Disclosure - Summary of Total Compensation Cost [Abstract] Disclosure - Supplemental Disclosure of Cash Flow Information - Additional Information [Abstract] Disclosure Supplemental Disclosure Of Cash Flow Information Additional Information [Abstract] Disclosure - Supplemental Disclosure of Cash Flow Information - Additional Information [Abstract] Dividend Declared [Member] Dividend Declared Dividend Payable Date To Be Paid Day Month And Year Dividends payable, date to be paid Dividends [Axis] Dividends [Axis] Dividends Cash Cash dividends Dividends [Domain] Dividends [Domain] Dividends Payable Amount Per Share Declared cash dividend Dividends Payable Date Declared Day Month And Year Dividend payable, date declared Dividends Payable Date Of Record Day Month And Year Dividend payable, record date Document - Document and Entity Information [Abstract] Document Documentand Entity Information [Abstract] Document - Document and Entity Information [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Document Information [Line Items] Document Information [Line Items] Document Period End Date Document Period End Date Document Type Document Type Domestic And Foreign Corporate Bonds [Member] Domestic And Foreign Corporate Bonds [Member] Domestic and Foreign Corporate Bonds Donation commitments yearly payable contributions for 2012-2022. Donation Commitments Yearly Payable Contributions For Two Thousand Twelve Through Two Thousand Twenty Two Donation commitments, yearly payable contributions for 2012 through 2022 Donation Payments Made During Period. Donation Payments Made During Period Donation payments made during period Donation Payments Made Or Accrued During Period Donation Payments Made Or Accrued During Period Donation to University of Macau Donation To Third Party Donation To Third Party Donation to University of Macau Development Foundation Down payment of premium Down Payment Of Premium Down payment of premium Due To Officers Or Stockholders Current And Noncurrent Amount due to officers and directors Earnings Per Share [Abstract] Net income attributable to Wynn Resorts, Limited: Earnings Per Share Basic Basic Earnings Per Share Basic And Diluted [Abstract] Basic and diluted income per common share: Earnings Per Share Diluted Diluted Earnings Per Share [Line Items] Earnings Per Share [Line Items] Earnings Per Share [Line Items] Earnings Per Share [Table] Earnings Per Share [Table] Earnings Per Share [Table] Earnings Per Share [Text Block] Earnings Per Share Effect Of Exchange Rate On Cash And Cash Equivalents Effect of exchange rate on cash Employee Benefits And Share Based Compensation Total stock-based compensation costs Employee Related Liabilities Current Accrued compensation and benefits Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount Total stock-based compensation capitalized Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Costs incurred during the period related to generating revenue from shows, retail outlets, convention space, spa, salon, wedding salon, and golf course operations. Entertainment Retail And Other Costs Entertainment, retail and other Entertainment Retail And Other [Member] Entertainment Retail And Other [Member] Entertainment, Retail and Other Revenue earned during the period from shows, retail outlets, convention space, spa, salon, wedding salon, and golf course. Entertainment Retail And Other Revenue Entertainment, retail and other Entities [Table] Entities [Table] Entity Central Index Key Entity Central Index Key Entity Common Stock Shares Outstanding Entity Common Stock, Shares Outstanding Entity [Domain] Entity [Domain] Entity Filer Category Entity Filer Category Entity Registrant Name Entity Registrant Name Equity Component [Domain] Equity Component [Domain] Equity Method Investment Ownership Percentage Percentage of ownership in joint ventures Estimated Cost Of Project Estimated Cost Of Project Project Budget Estimated costs of promotional allowances primarily included in Casino Expense. Estimated Costs Of Promotional Allowances Primarily Included In Casino Expenses Estimated costs of promotional allowances primarily included in casino expense