Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Weighted average common shares outstanding Denominator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Trading Arrangement: Trading Arrangement [Axis] MGM China M G M China Holdings Limited [Member] Represents information pertaining to the entity's subsidiary MGM China Holdings Limited (MGM China). Cash and cash equivalents Cash and Cash Equivalents, Unrestricted Cash and Cash Equivalents, Policy [Policy Text Block] Title of 12(b) Security Title of 12(b) Security Net income (loss) available to common stockholders – diluted Net Income (Loss) Available to Common Stockholders, Diluted Subsequent Event Subsequent Event [Member] Document Fiscal Year Focus Document Fiscal Year Focus Debt instrument, weighted average interest rate (in percent) Debt, Weighted Average Interest Rate Adjustment to Compensation, Amount Adjustment to Compensation Amount Pledged Status [Axis] Pledged Status [Axis] Financial Instrument [Axis] Financial Instrument [Axis] Segment Reporting [Abstract] Segment Reporting [Abstract] Common stock, $0.01 par value: authorized 1,000,000,000 shares, issued and outstanding 251,601,576 and 258,323,143 shares Common Stock, Value, Issued 2027 Lessee, Operating Lease, Liability, to be Paid, Year One Schedule of Supplemental Balance Sheet Information Related to Leases Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee Schedule of Long-term Debt Schedule of Long-Term Debt Instruments [Table Text Block] LEASES Lessee, Finance Leases [Text Block] Line of Credit Line of Credit [Member] Obligation amount Guarantor Obligations, Maximum Exposure, Undiscounted Restatement Determination Date Restatement Determination Date Investments in and advances to unconsolidated affiliates Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures 2027 Finance Lease, Liability, to be Paid, Year One Derivative Instrument [Axis] Derivative Instrument [Axis] Commitment amount Purchase Commitment, Remaining Minimum Amount Committed Proceeds from sale of operating resorts Cash consideration Proceeds from Divestiture of Businesses Empire City Reporting Unit Empire City Reporting Unit [Member] Empire City Reporting Unit Amendment Flag Amendment Flag Gain on partial lease termination Gain (Loss) on Termination of Lease Current liabilities Liabilities, Current [Abstract] Disposal Group, Including Discontinued Operation, Liabilities [Abstract] Disposal Group, Including Discontinued Operation, Liabilities [Abstract] Debt and Equity Securities, FV-NI [Line Items] Debt and Equity Securities, FV-NI [Line Items] Provision for credit losses Accounts Receivable, Credit Loss Expense (Reversal) Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Financing cash outflows from finance leases Finance Lease, Principal Payments 4.75% MGM China senior notes, due 2027 MGM China Senior Notes Due 2027 [Member] MGM China Senior Notes Due 2027 Disposal Group, Including Discontinued Operation, Assets [Abstract] Disposal Group, Including Discontinued Operation, Assets [Abstract] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Guarantees, percentage Guaranty Liabilities, Percentage Guaranty Liabilities, Percentage Contract And Contract Related Liabilities [Roll Forward] Contract And Contract Related Liabilities [Roll Forward] Contract And Contract Related Liabilities Asset-backed securities Asset-Backed Securities [Member] Loss Contingencies [Table] Loss Contingencies [Table] Debentures Debentures [Member] Debentures Leases [Abstract] Leases [Abstract] Net carrying value of assets and liabilities derecognized Disposal Group, Including Discontinued Operation, Net Assets Disposal Group, Including Discontinued Operation, Net Assets Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Property and equipment, net Disposal Group, Including Discontinued Operation, Property, Plant, and Equipment Cash, cash equivalents, and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation [Abstract] Entity Address, State or Province Entity Address, State or Province PEO Total Compensation Amount PEO Total Compensation Amount Foreign currency translation Currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Cash and cash equivalents Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents Capital expenditures Segment Reporting, Long-Lived Asset, Expenditure for Addition Other intangible assets, net Intangible Asset, Excluding Goodwill, after Accumulated Amortization Share Repurchase Program [Domain] Share Repurchase Program [Domain] Basic (in shares) Weighted-average common shares outstanding – basic (in shares) Weighted Average Number of Shares Outstanding, Basic Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Loss Contingencies [Line Items] Loss Contingencies [Line Items] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Senior secured yen credit facility Senior Secured Yen Credit Facility [Member] Senior Secured Yen Credit Facility Number of reportable segments Number of Reportable Segments Total current liabilities Liabilities, Current 2030 Lessee, Operating Lease, Liability, to be Paid, Year Four Bellagio Bellagio [Member] Bellagio. Derivative liability current Derivative Liability, Current Entity Address, City or Town Entity Address, City or Town Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Total assets Disposal Group, Including Discontinued Operation, Assets Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Basis of presentation Basis of Accounting, Policy [Policy Text Block] Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Distributions from unconsolidated affiliates Proceeds from distributions Proceeds from Equity Method Investment, Distribution, Return of Capital Net income (loss) available to common stockholders – basic Net Income (Loss) Available to Common Stockholders, Basic Level 2 Fair Value, Inputs, Level 2 [Member] Non-operating income (expense) Nonoperating Income (Expense) [Abstract] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Inventories Disposal Group, Including Discontinued Operation, Inventory, Current Line of credit facility Line of Credit Facility, Maximum Borrowing Capacity Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Increase (decrease) Change In Contract And Contract Related Liabilities Change in contract and contract related liabilities. Other long-term assets, net Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent Operating leases Operating Lease, Assets And Liabilities, Lessee [Abstract] Operating Lease, Assets And Liabilities, Lessee Subsequent Event Type [Axis] Subsequent Event Type [Axis] Other Adjustments to Additional Paid in Capital, Other Corporate expense Corporate Income (Expense) Corporate income expense. Debt Instrument [Table] Schedule of Long-Term Debt Instruments [Table] Schedule of Segment Information Segment Reporting [Table Text Block] Noncontrolling Interests Noncontrolling Interest [Member] Related Party, Type [Axis] Related and Nonrelated Parties [Axis] 6.25% MGM China senior notes, due 2033 MGM China Senior Notes Due 2033 [Member] MGM China Senior Notes Due 2033 Revenue recognition Revenue from Contract with Customer [Policy Text Block] Long-term debt Long-Term Debt Schedule Of Stockholders Equity Note [Table] Schedule Of Stockholders Equity Note [Table] Schedule of stockholders equity note. Lease liabilities derecognized upon lease modification Lease Liabilities Derecognized Upon Lease Modification Lease Liabilities Derecognized Upon Lease Modification Schedule of Operating Lease Maturity Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Document Period End Date Document Period End Date Change in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Other Other Unconsolidated Affiliates [Member] Other unconsolidated affiliates. Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Liabilities related to assets held for sale Disposal Group, Including Discontinued Operation, Liabilities, Current Long-term debt, principal amount Debt Instrument, Face Amount 2028 Lessee, Operating Lease, Liability, to be Paid, Year Two STOCKHOLDERS’ EQUITY Equity [Text Block] Expenses Costs and Expenses [Abstract] Security Exchange Name Security Exchange Name Corporate and other Corporate And Reconciling Items [Member] Corporate and reconciling items. Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Finance leases Finance Lease, Weighted Average Remaining Lease Term Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Consolidation Items [Domain] Consolidation Items [Domain] Operating lease liabilities - current, classified within “Other accrued liabilities” Less: Current portion Operating Lease, Liability, Current Outstanding Chip Liability Outstanding Chip Liability [Member] Outstanding chip liability. Accrued interest on long-term debt Interest Payable, Current Property transactions, net Property Transactions Policy [Policy Text Block] Property Transactions Policy Finance lease ROU assets, net, classified within “Property and equipment, net” Finance Lease, Right-of-Use Asset, after Accumulated Amortization Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] EARNINGS PER SHARE Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Earnings (loss) per share Earnings Per Share [Abstract] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Document Fiscal Period Focus Document Fiscal Period Focus Lease revenue Lease Income Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Schedule Of Stockholders Equity Note [Line Items] Schedule Of Stockholders Equity Note [Line Items] Schedule Of Stockholders Equity Note [Line Items] January 2023 Concessions January 2023 Concessions [Member] January 2023 Concessions Total liabilities Liabilities Trading Symbol Trading Symbol Capital expenditures Payments to Acquire Property, Plant, and Equipment Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Company Selected Measure Name Company Selected Measure Name Distributions to noncontrolling interest owners Payments of Ordinary Dividends, Noncontrolling Interest Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Amortization of debt discounts and issuance costs Amortization of Debt Issuance Costs and Discounts 5.25% MGM China senior notes due 2025 MGM China Senior Notes, Due 2025 [Member] MGM China Senior Notes, Due 2025 Adjustment related to redeemable noncontrolling interests Adjustment Related To Redeemable Noncontrolling Interests Adjustment related to redeemable noncontrolling interests. Lease [Domain] Lease [Domain] Lease [Domain] Ownership interest (in percent) Percentage Of Ownership Interest Percentage of ownership interest. Loyalty Program Loyalty Program [Member] Loyalty program. Long-term debt, gross Long-Term Debt, Gross Credit Facility [Domain] Credit Facility [Domain] Depreciation and amortization Depreciation and amortization Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Organization Disclosure [Table] Organization Disclosure [Table] Organization disclosure. Cash flows from operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Compensation Amount Outstanding Recovery Compensation Amount Individual: Individual [Axis] Diluted (in shares) Weighted-average common and common equivalent shares – diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Entity Emerging Growth Company Entity Emerging Growth Company Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] 2028 Finance Lease, Liability, to be Paid, Year Two Disposal Group Name [Domain] Disposal Group Name [Domain] Underlying Security Market Price Change Underlying Security Market Price Change, Percent 2030 Finance Lease, Liability, to be Paid, Year Four Property and equipment, net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Less: Amount of lease payments representing interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Schedule of Assets and Liabilities Derecognized Disposal Groups, Including Discontinued Operations [Table Text Block] Revenues Revenue from Contract with Customer [Abstract] Less: Amount of lease payments representing interest Finance Lease, Liability, Undiscounted Excess Amount Restricted cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Write downs and impairments Long-Lived Asset, Held and Used, Impairment Loss 4.75% senior notes, due 2028 Senior Notes Due 2028 [Member] Senior Notes Due 2028 Operating cash outflows from operating leases Operating Lease, Payments Award Timing Predetermined Award Timing Predetermined [Flag] Credit facility outstanding Letters of Credit Outstanding, Amount Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Stock-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Level 1 Fair Value, Inputs, Level 1 [Member] Annual rent escalator cap after year ten Annual Rent Escalator Cap After Year Ten Annual rent escalator cap after year ten. Derivative asset, noncurrent Derivative Asset, Noncurrent Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Indefinite-lived Intangible Assets, Major Class Name [Domain] Intangible Asset, Indefinite-Lived, Class [Domain] Total future minimum lease payments Lessee, Operating Lease, Liability, to be Paid Potential dilution from stock-based awards (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements All Executive Categories All Executive Categories [Member] U.S. government securities US Government Debt Securities [Member] Repurchases of common stock Repurchases of common stock Stock Repurchased and Retired During Period, Value Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Lease [Axis] Lease [Axis] Lease Long-term debt, fair value Long-Term Debt, Fair Value Redeemable noncontrolling interests Redeemable Noncontrolling Interest, Equity, Carrying Amount Accounts receivable, net Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net Empire City Gaming License Empire City Gaming License [Member] Empire City Gaming License Operating lease right-of-use assets, net Operating lease ROU assets, net Operating Lease, Right-of-Use Asset ROU assets obtained in exchange for new lease liabilities R O U Assets Obtained In Exchange For New Lease Liabilities [Abstract] ROU assets obtained in exchange for new lease liabilities. Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Schedule of Basic and Diluted Earnings Per Share of Common Stock Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] SEGMENT INFORMATION Segment Reporting [Text Block] Line of credit facility drawn Long-Term Line of Credit Food and beverage Food and Beverage [Member] Expiration Date Trading Arrangement Expiration Date Lessee, operating lease, annual rent expense Lessee, Operating Lease, Annual Rent Expense Lessee, Operating Lease, Annual Rent Expense Effect of exchange rate on cash, cash equivalents, and restricted cash Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement Location [Axis] Location, Statement of Income, Balance [Axis] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Goodwill Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block] Total stockholders’ equity Beginning balance Ending balance Equity, Including Portion Attributable to Noncontrolling Interest Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Disposal Group, Including Discontinued Operations [Line Items] Disposal Group, Including Discontinued Operations [Line Items] Business Combination [Line Items] Business Combination [Line Items] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Controlling interest (as a percent) Sale of Stock, Percentage of Ownership after Transaction Common stock, shares authorized (in shares) Common Stock, Shares Authorized Total finance lease costs Finance Lease Cost Finance lease cost. Exercise Price Award Exercise Price Cash flows from investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Schedule Of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Segment Reporting [Line Items] Segment Reporting [Line Items] Authorized amount of stock repurchase Share Repurchase Program, Authorized, Amount Document Quarterly Report Document Quarterly Report Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Segments [Domain] Segments [Domain] VICI lease VICI Lease [Member] The Mirage, Luxor, New York-New York, Park MGM, Excalibur, The Park, Gold Strike Tunica, MGM Grand Detroit, Beau Rivage, Borgata, Empire City, MGM National Harbor, MGM Northfield Park, and MGM Springfield Income taxes receivable and payable, net Increase (Decrease) in Income Taxes Payable, Net of Income Taxes Receivable Lender Name [Axis] Lender Name [Axis] LONG-TERM DEBT Debt Disclosure [Text Block] Repayment of long-term debt Repayment of long-term debt Repayments of Long-Term Debt Senior secured credit facility Senior Secured Credit Facility [Member] Senior Secured Credit Facility Disposal Group Classification [Domain] Disposal Group Classification [Domain] Less: Unamortized discounts and debt issuance costs, net Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Equity method investment Equity Method Investments Schedule Of Business Acquisitions By Acquisition [Table] Business Combination [Table] Equity Component [Domain] Equity Component [Domain] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount 6.125% senior notes, due 2029 Senior Notes Due 2029 [Member] Senior Notes Due 2029 Performance Guarantee Performance Guarantee [Member] Total expenses Costs and Expenses Adoption Date Trading Arrangement Adoption Date Finance leases Finance Lease, Weighted Average Discount Rate, Percent Cash consideration, net of purchase price adjustments Disposal Group, Including Discontinued Operation, Consideration Investments in unconsolidated affiliates Funded amount Payments to Acquire Equity Method Investments Long-term debt, interest rate (in percent) Debt Instrument, Interest Rate, Stated Percentage Total MGM Resorts International stockholders' equity Equity, Attributable to Parent Non-operating income (expense) Nonoperating Income (Expense) Disposal group, disposed of by sale, not discontinued operations Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] ASSETS Assets [Abstract] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] Basis of presentation and summary of significant accounting policies. Accounting Policies [Abstract] Accounting Policies [Abstract] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Contract And Contract Related Liabilities [Line Items] Contract And Contract Related Liabilities [Line Items] Contract and contract related liabilities. Total operating lease liabilities Operating Lease, Liability 4.625% senior notes, due 2026 Senior Notes Due 2026 [Member] Senior Notes Due 2026 Insider Trading Policies and Procedures [Line Items] Numerator: Net Income (Loss) Attributable to Parent, Diluted [Abstract] Total finance lease liabilities Finance Lease, Liability Loss reserve for accounts receivable Accounts Receivable, Allowance for Credit Loss, Current Other Proceeds from (Payment for) Other Financing Activity Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] MGM Digital MGM Digital [Member] MGM Digital MGM China MGM China [Member] MGM china member. Prepaid expenses and other Prepaid Expense and Other Assets, Current BetMGM North America Venture BetMGM North America Venture BetMGM North America Venture [Member] BetMGM LLC. Deferred income taxes Deferred Income Tax Expense (Benefit) General and administrative Selling, General and Administrative Expense Prepaid expenses and other Disposal Group, Including Discontinued Operation, Prepaid and Other Assets, Current Business Combination [Domain] Business Combination [Domain] Basis Of Presentation And Summary Of Significant Accounting Policies [Table] Basis Of Presentation And Summary Of Significant Accounting Policies [Table] Basis of presentation and summary of significant accounting policies. Decrease in annual rent payment under master lease Disposal Group, Master Lease, Decrease In Annual Rent Payment Disposal Group, Master Lease, Decrease In Annual Rent Payment COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Blackstone Real Estate Income Trust Blackstone Real Estate Income Trust [Member] Blackstone Real Estate Income Trust. MGM China revolving credit facility MGM China Revolving Credit Facility [Member] MGM China Revolving Credit Facility Entity Central Index Key Entity Central Index Key Capital in excess of par value Additional Paid in Capital, Common Stock All Adjustments to Compensation All Adjustments to Compensation [Member] Other Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item Business Combination [Axis] Business Combination [Axis] Equity [Abstract] Equity [Abstract] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Total liabilities Disposal Group, Including Discontinued Operation, Liabilities Income Statement [Abstract] Income Statement [Abstract] Weighted average remaining lease term (years) Weighted Average Remaining Lease Term [Abstract] Weighted-average remaining lease term. Document Transition Report Document Transition Report Ownership [Axis] Ownership [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Other investment losses (gains) Gain (Loss) on Investments Investment, Name [Axis] Investment, Name [Axis] Deferred income taxes Deferred Income Tax Assets, Net Finance lease liabilities - long-term, classified within “Other long-term obligations” Long-term portion of lease liabilities Finance Lease, Liability, Noncurrent Finance lease ROU assets, net, location Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] MGM Grand Paradise SA M G M Grand Paradise S A [Member] Represents the properties MGM Grand Paradise, S.A. (MGM Grand Paradise), a Macau company owned by MGM China, which owns the MGM Macau resort and casino and the related gaming subconcession and land concession. Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] City Area Code City Area Code Marketing costs Marketing Expense Total future minimum lease payments Finance Lease, Liability, to be Paid Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Schedule of Share of Operating Income from Unconsolidated Affiliates Equity Method Investment Financial Statement Related To Income From Unconsolidated Affiliates [Table Text Block] Equity method investment financial statement related to income from unconsolidated affiliates. All Individuals All Individuals [Member] Accounts payable Disposal Group, Including Discontinued Operation, Accounts Payable Name Forgone Recovery, Individual Name Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Other accrued liabilities Disposal Group, Including Discontinued Operation, Other Accrued Liabilities Disposal Group, Including Discontinued Operation, Other Accrued Liabilities Statement [Line Items] Statement [Line Items] Total assets Assets Operating Leases Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Organization Disclosure [Line Items] Organization Disclosure [Line Items] Organization disclosure. 6.5% senior notes, due 2032 Senior Notes Due 2032 [Member] Senior Notes Due 2032 Reportable Segments Operating Segments [Member] 5.5% senior notes, due 2027 Senior Notes Due 2027 [Member] Senior Notes Due 2027 Interest expense, net of amounts capitalized Interest Expense, Nonoperating Regional Operations Regional Operations [Member] Regional operations. Impairment of intangible assets Intangible Asset, Excluding Goodwill, Indefinite-Lived, Impairment Loss Bellagio REIT Venture Bellagio REIT Venture [Member] Bellagio BREIT Venture. ORGANIZATION Nature of Operations [Text Block] PEO PEO [Member] Repurchases of common stock (in shares) Repurchases of common stock (in shares) Stock Repurchased and Retired During Period, Shares Other long-term obligations Other Liabilities, Noncurrent Goodwill Goodwill Thereafter Finance Lease Liability Payments Due After Year Four Finance lease liability payments due after year four. Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Share Repurchase Program November 2023 Share Repurchase Program November 2023 [Member] Share Repurchase Program November 2023 Reporting Unit [Axis] Reporting Unit [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Thereafter Lessee Operating Lease Liability Payments Due After Year Four Lessee operating lease liability payments due after year four. Retained Earnings Retained Earnings [Member] Operating lease liabilities Operating lease liabilities - long-term Long-term portion of lease liabilities Operating Lease, Liability, Noncurrent Revolving Credit Facility Revolving Credit Facility [Member] Money market funds Money Market Funds [Member] Fair value measurements Fair Value Measurement, Policy [Policy Text Block] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Common stock, shares outstanding (in shares) Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Debt issuance costs Payments of Debt Issuance Costs Right-of-use assets derecognized upon lease modification Lessee, Operating Lease, Right Of Use Assets Derecognized Upon Lease Modification Lessee, Operating Lease, Right Of Use Assets Derecognized Upon Lease Modification Diluted (in dollars per share) Earnings Per Share, Diluted Entity Current Reporting Status Entity Current Reporting Status Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Prepaid expenses and other Increase (Decrease) in Prepaid Expense and Other Assets Triple net lease rent expense Triple Net Operating Lease And Ground Lease Rent Expense Triple net operating lease and ground lease rent expense. Net borrowings (repayments) of debt - maturities of 90 days or less Proceeds from (Repayments of) Short-Term Debt, Maturing in Three Months or Less Ownership [Domain] Ownership [Domain] Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Cash flows from financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Total revenue Revenue from Contract with Customer, Excluding Assessed Tax Interest expense Finance Lease Interest Expense (Credit) Finance lease Interest expense (credit). Entertainment, retail and other Entertainment Retail And Other [Member] Entertainment retail and other. Financial Instruments [Domain] Financial Instruments [Domain] Assets held for sale Disposal Group, Including Discontinued Operation, Assets, Current Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Underlying Securities Award Underlying Securities Amount Less: Comprehensive income attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Investments and other Payment for (Proceeds from) Other Investing Activity Inventories Increase (Decrease) in Inventories Operating leases Operating Lease, Weighted Average Discount Rate, Percent Other intangible assets, net Disposal Group, Including Discontinued Operation, Other Intangible Assets Disposal Group, Including Discontinued Operation, Other Intangible Assets Noncash lease expense Noncash Lease Expense Noncash lease expense. Schedule Of Segment Reporting Information By Segment [Table] Segment Reporting [Table] Schedule Of Equity Method Investments [Table] Equity Method Investment [Table] Finance lease liabilities - current, location Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Schedule of Components of Lease Costs Lease, Cost [Table Text Block] Option for higher credit facility amount Line of Credit Facility, Accordion Feature, Higher Borrowing Capacity Option Line of Credit Facility, Accordion Feature, Higher Borrowing Capacity Option Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Net gain (loss) on derivative Derivative, Gain (Loss) on Derivative, Net Schedule of Debt Investments Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Operating income (loss) Operating Income (Loss) Current Fiscal Year End Date Current Fiscal Year End Date Schedule of Finance Lease Maturity Finance Lease, Liability, to be Paid, Maturity [Table Text Block] 2026 (excluding the nine months ended September 30, 2026) Finance Lease, Liability, to be Paid, Remainder of Fiscal Year Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Other long-term obligations Disposal Group, Including Discontinued Operation, Other Liabilities, Noncurrent Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Issuance of common stock pursuant to stock-based compensation awards Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Corporate bonds Corporate Bond Securities [Member] Distributions to noncontrolling interest owners Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Recovery of Erroneously Awarded Compensation Disclosure [Line Items] 5.875% MGM China senior notes, due 2026 MGM China Senior Notes Due 2026 [Member] MGM China Senior Notes Due 2026 Common stock, shares issued (in shares) Common Stock, Shares, Issued Measure: Measure [Axis] INVESTMENTS IN AND ADVANCES TO UNCONSOLIDATED AFFILIATES Equity Method Investments and Joint Ventures Disclosure [Text Block] Equity Components [Axis] Equity Components [Axis] Accounts receivable Increase (Decrease) in Accounts Receivable Product and Service [Domain] Product and Service [Domain] Income tax refunds received, net Income Tax Paid, after Refund Received Entity Interactive Data Current Entity Interactive Data Current Finance lease liabilities - current, classified within “Other accrued liabilities” Less: Current portion Finance Lease, Liability, Current Less: Net income attributable to noncontrolling interests Less: Net income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Number of integrated casino Number Of Integrated Casino, Hotel and Entertainment Resorts Number Of Integrated Casino, Hotel and Entertainment Resorts Deferred income taxes Deferred Income Tax Liabilities, Net Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] 7% debentures, due 2036 Debentures Due 2036 [Member] Debentures Due 2036 Gain on sale of real estate assets Gains (Losses) on Sales of Investment Real Estate Senior Credit Facility Senior Credit Facility [Member] Senior credit facility. Adjustment of redeemable noncontrolling interest to redemption value Noncontrolling Interest, Change in Redemption Value Entity Small Business Entity Small Business Comprehensive income (loss) attributable to MGM Resorts International Comprehensive Income (Loss), Net of Tax, Attributable to Parent Property transactions, net Property transactions, net Property transactions, net Property Transactions, Net Property transactions such as write-downs and impairments. 2029 Lessee, Operating Lease, Liability, to be Paid, Year Three Termination Date Trading Arrangement Termination Date MGM Osaka MGM Osaka Corporation [Member] MGM Osaka Corporation DIVESTITURES Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Other accrued liabilities Other Liabilities, Current Non-operating items from unconsolidated affiliates Non-operating items from unconsolidated affiliates Non-Operating Expense (Income) From Unconsolidated Affiliates This item represents the entity's proportionate share during the period of the non-operating income (loss) of its investees (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. Other long-term assets, net Other Assets, Noncurrent Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] 2029 Finance Lease, Liability, to be Paid, Year Three Document Type Document Type Fair Value as of Grant Date Award Grant Date Fair Value Number of renewal periods, exercisable at option Number Of Renewal Periods Exercisable At Option Number of renewal periods, exercisable at option. Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Repurchase of common stock, remaining amount Share Repurchase Program, Remaining Authorized, Amount Arrangement Duration Trading Arrangement Duration Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Debt Securities, Trading, and Equity Securities, FV-NI [Table] Debt Securities, Trading, and Equity Securities, FV-NI [Table] Issuance of long-term debt Proceeds from Issuance of Long-Term Debt Local Phone Number Local Phone Number Share Repurchase Program April 2025 Share Repurchase Program April 2025 [Member] Share Repurchase Program April 2025 Consolidation Items [Axis] Consolidation Items [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Accrual for property and equipment within accounts payable Accrued Capital Expenditures Accrued Capital Expenditures Share Repurchase Program Share Repurchase Program [Member] Share repurchase program. Pledged Status [Domain] Pledged Status [Domain] Income (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Commitments and contingencies (Note 8) Commitments and Contingencies Finance lease liabilities - long-term, location Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Income from unconsolidated affiliates Net income from unconsolidated affiliates Income (Loss) from Equity Method Investments Decrease in annual rent payment Disposal Group, Decrease In Annual Rent Payment Decrease in annual rent payment. Accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Executive Category: Executive Category [Axis] Amortization expense Finance Lease, Right-of-Use Asset, Amortization Lessor, operating lease, renewal term Lessor, Operating Lease, Renewal Term LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity [Abstract] Inventories Inventory, Net All Award Types Award Type [Domain] 7.125% MGM China senior notes, due 2031 MGM China Senior Notes Due 2031 [Member] MGM China Senior Notes Due 2031 Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Purchase commitment, amount Purchase Commitment, Amount Purchase Commitment, Amount 2026 (excluding the nine months ended September 30, 2026) Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Asset Pledged as Collateral Asset Pledged as Collateral [Member] Supplemental cash flow disclosures Supplemental Cash Flow Information [Abstract] Lease agreement initial lease term Lessee, Operating Lease, Term of Contract Ownership interest by noncontrolling owner (in percent) Subsidiary, Ownership Percentage, Noncontrolling Owner PEO Name PEO Name Other segment items Segment Reporting, Other Segment Item, Amount Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Balance, beginning of period Balance, end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Casino Casino [Member] Total debt investments Debt Securities Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Preopening and start-up expenses Preopening and start-up expenses Preopening And Start Up Income (Expense) Preopening and start-up income (expense). Debt Instrument [Axis] Debt Instrument [Axis] Reporting Unit [Domain] Reporting Unit [Domain] Ownership interest (as a percent) Equity Method Investment, Ownership Percentage Stock-based compensation Share-Based Payment Arrangement, Noncash Expense Payroll related expense Labor and Related Expense Guarantee expiration, days after the end of the concession term Guarantor Obligations, Maximum Exposure, Expiration After Concession Term Guarantor Obligations, Maximum Exposure, Expiration After Concession Term Cash paid for amounts included in the measurement of lease liabilities Cash Paid For Amounts Included In The Measurement Of Lease Liabilities [Abstract] Cash Paid For Amounts Included In The Measurement Of Lease Liabilities Disposal Group Name [Axis] Disposal Group Name [Axis] Investment, Name [Domain] Investment, Name [Domain] LEASES Lessee, Operating Leases [Text Block] Long-Term Debt, Type [Domain] Long-Term Debt, Type [Domain] Basic (in dollars per share) Earnings Per Share, Basic Balance at January 1 Balance at September 30 Contract with Customer, Liability, Current Repurchases of common stock Payments for Repurchase of Common Stock Total current assets Assets, Current Insider Trading Arrangements [Line Items] Long-term debt, net Long-Term Debt, Excluding Current Maturities Award Type Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Segment Adjusted EBITDAR Adjusted Earnings Before Interest Taxes Depreciation Amortization And Restructuring Expense Adjusted Earnings Before Interest Taxes Depreciation Amortization And Restructuring Expense Retained earnings Retained Earnings (Accumulated Deficit) Product and Service [Axis] Product and Service [Axis] Fair value of investment Equity Securities, FV-NI Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common Stock Common Stock [Member] Operating lease cost, primarily classified within "General and administrative" Operating Lease, Cost Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Cover [Abstract] Annual rent escalator from year one through year fifteen Annual Rent Escalator From Year One Through Year Fifteen Annual Rent Escalator From Year One Through Year Fifteen Customer Advances and Other Customer Advances And Other [Member] Customer advances and other. Schedule of Share of Income from Unconsolidated Affiliates Equity Method Investment Financial Statement Reported Amounts Results Of Operations [Table Text Block] Tabular disclosure of the entity's proportionate share of results of operations of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. Derivative Contract [Domain] Derivative Contract [Domain] Equity Awards Adjustments Equity Awards Adjustments [Member] Derivative liability noncurrent Derivative Liability, Noncurrent Total liabilities and stockholders' equity Liabilities and Equity Lease agreement renewal period Lease Agreement Renewal Period Lease Agreement Renewal Period MGM Springfield MGM Springfield [Member] MGM Springfield Employee Stock Option Share-Based Payment Arrangement, Option [Member] Noncontrolling interests Equity, Attributable to Noncontrolling Interest Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Related Party, Type [Domain] Related and Nonrelated Parties [Domain] Annual rent escalator after year ten Annual Rent Escalator After Year Ten Annual rent escalator after year ten. Tabular List, Table Tabular List [Table Text Block] Other, net Other, net Other Nonoperating Income (Expense) Total MGM Resorts International Stockholders’ Equity Parent [Member] Corporate and other, net Other Operating Income (Expense), Net Income tax receivable Income Taxes Receivable, Current Name Awards Close in Time to MNPI Disclosures, Individual Name Stockholders' equity Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Income from unconsolidated affiliates Income from unconsolidated affiliates Income from unconsolidated affiliates Income (Loss) From Unconsolidated Affiliates This item represents the entity's proportionate share for the period of the operating income (loss) of its investees (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied, excluding pre-opening expenses. Such amount typically reflects adjustments to eliminate intercompany gains and losses, and to amortize, if appropriate, any difference between cost and underlying equity in net assets of the investee at the date of investment. Adjustment to Compensation: Adjustment to Compensation [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Operating cash outflows from finance leases Finance Lease, Interest Payment on Liability Interest paid, net of amounts capitalized Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Las Vegas Strip Resorts Las Vegas Strip Resorts [Member] Las vegas strip resorts. Foreign Exchange Forward Foreign Exchange Forward [Member] Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Discontinued Operations and Disposal Groups [Abstract] Name Measure Name INCOME TAXES Income Tax Disclosure [Text Block] Accounts and construction payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Debt Instrument [Line Items] Debt Instrument [Line Items] Gaming Concessions Gaming Concessions [Member] Gaming Concessions Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Capital in Excess of Par Value Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Indefinite-lived Intangible Assets [Axis] Intangible Asset, Indefinite-Lived, Class [Axis] Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] Annual rent escalator from year one through year ten Annual Rent Escalator From Year One Through Year Ten Annual Rent Escalator From Year One Through Year Ten Goodwill impairment Goodwill impairment Goodwill impairment Goodwill, Impairment Loss Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and Cash Equivalent Finance Leases Finance Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Operating lease liabilities - current, location Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Company Selected Measure Amount Company Selected Measure Amount MGM Northfield Park MGM Northfield Park [Member] MGM Northfield Park Distributions from unconsolidated affiliates Proceeds from Equity Method Investment, Distribution Contract And Contract Related Liabilities [Table] Contract And Contract Related Liabilities [Table] Contract and contract related liabilities. Net gain (loss) on equity investments Equity Securities, FV-NI, Unrealized Gain (Loss) Segment Reporting, Reconciliation of Other Item by Segment to Consolidated [Abstract] Segment Reporting, Reconciliation of Other Item by Segment to Consolidated [Abstract] Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Issuance of common stock pursuant to stock-based compensation awards (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Net income (loss) Net income (loss) Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Finance leases Right-of-Use Asset Obtained in Exchange for Finance Lease Liability Current assets Assets, Current [Abstract] Operating leases Operating Lease, Weighted Average Remaining Lease Term Derivative liability Derivative Liability Non-PEO NEO Non-PEO NEO [Member] Senior Notes Senior Notes [Member] Currency translation Foreign Currency Transactions and Translations Policy [Policy Text Block] Entity Address, Address Line One Entity Address, Address Line One Operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Benefit (provision) for income taxes Benefit (provision) for income taxes Income Tax Expense (Benefit) Foreign currency transaction (gain) loss Foreign currency transaction gain (loss) Gain (Loss), Foreign Currency Transaction, before Tax Rooms Occupancy [Member] Net income (loss) Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest Cost of sales Cost of Product and Service Sold Weighted average discount rate (%) Leases, Weighted Average Discount Rate [Abstract] Leases, Weighted Average Discount Rate Award Timing Method Award Timing Method [Text Block] Principles of consolidation Consolidation, Policy [Policy Text Block] Net change for the period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Net income (loss) attributable to MGM Resorts International Net income (loss) attributable to MGM Resorts International Net Income (Loss) Attributable to Parent Long-Term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Goodwill Disposal Group, Including Discontinued Operation, Goodwill Balance Sheet Location [Axis] Location, Statement of Financial Position, Balance [Axis] Dispositions of property and equipment Proceeds from Sale of Property, Plant, and Equipment Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Change in cash and cash equivalents classified as assets held for sale Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Classified as Assets Held For Sale, Period Increase (Decrease) Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Classified as Assets Held For Sale, Period Increase (Decrease) Gaming taxes Gaming Tax Gaming Tax Leases Lessee, Leases [Policy Text Block] Schedule of Contract and Contract-related Liabilities Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Finance leases Finance Lease, Assets And Liabilities, Lessee [Abstract] Finance Lease, Assets And Liabilities, Lessee BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation and Significant Accounting Policies [Text Block] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]