Document And Entity Information Statement [Table] Statement [Line Items] Document Type Document Quarterly Report Document Period End Date Document Transition Report Securities Act File Number Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Trading Symbol Security Exchange Name Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Central Index Key Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Period Focus Amendment Flag Income Statement [Abstract] Product and Service [Axis] Product and Service [Domain] Passenger [Member] Passenger ticket Commissions, transportation and other. Commissions, transportation and other Onboard and other. Onboard and other Represents payroll and related. Payroll and related Represents information about fuel expenses. Fuel Food and Beverage [Member] Food Service, Other [Member] Other Revenues [Abstract] Revenue Revenue from Contract with Customer, Including Assessed Tax Revenues by destination Total revenue Direct Operating Costs [Abstract] Cruise operating expense Cost of Product and Service Sold Total cruise operating expense Fuel Operating Expenses [Abstract] Other operating expense Selling, General and Administrative Expense Marketing, general and administrative Depreciation, Depletion and Amortization, Nonproduction Depreciation and amortization Operating Expenses Total other operating expense Total other operating expense Operating Income (Loss) Operating income Nonoperating Income (Expense) [Abstract] Non-operating income (expense) Interest Income (Expense), Nonoperating Interest expense, net Other Nonoperating Income (Expense) Other income (expense), net Nonoperating Income (Expense) Total non-operating income (expense) Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Net income (loss) before income taxes Income Tax Expense (Benefit) Income tax benefit (expense) Net income (loss) Net income (loss) Weighted Average Number of Shares Outstanding, Diluted [Abstract] Weighted-average shares outstanding Weighted Average Number of Shares Outstanding, Basic Basic (in shares) Basic weighted-average shares outstanding Weighted Average Number of Shares Outstanding, Diluted Diluted (in shares) Diluted weighted-average shares outstanding Earnings Per Share [Abstract] Earnings (loss) per share Earnings Per Share, Basic Basic (in dollars per share) Basic earnings per share (in dollars per share) Earnings Per Share, Diluted Diluted (in dollars per share) Diluted earnings per share (in dollars per share) Statement of Comprehensive Income [Abstract] Other Comprehensive Income (Loss), Net of Tax [Abstract] Other comprehensive income (loss): Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Shipboard Retirement Plan Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax [Abstract] Cash flow hedges: Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Net unrealized gain (loss) Amount of Gain (Loss) Recognized in Other Comprehensive Loss Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Amount realized and reclassified into earnings Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Expense) Other Comprehensive Income (Loss), Net of Tax Other comprehensive income (loss), net Total other comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Total comprehensive income Statement of Financial Position [Abstract] Assets [Abstract] Assets Assets, Current [Abstract] Current assets: Cash and Cash Equivalent Cash and cash equivalents Accounts Receivable, after Allowance for Credit Loss, Current Accounts receivable, net Receivables from customers Inventory, Net Inventories Prepaid Expense and Other Assets, Current Prepaid expenses and other assets Assets, Current Total current assets Property, Plant and Equipment, Net Property and equipment, net Ship, carrying value Goodwill Goodwill Intangible Assets, Net (Excluding Goodwill) Trade names Other Assets, Noncurrent Other long-term assets Assets Total assets Liabilities and Equity [Abstract] Liabilities and shareholders' equity Liabilities, Current [Abstract] Current liabilities: Long-Term Debt and Lease Obligation, Current Current portion of long-term debt Accounts Payable, Current Accounts payable Amount of obligations incurred and payable, pertaining to costs that are statutory in nature, incurred through that date and due within one year on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include, but not limited to, taxes, interest, rent and utilities. Also includes the aggregate carrying amount of liabilities not separately disclosed. Accrued Liabilities And Other Liabilities Current Accrued expenses and other liabilities Contract with Customer, Liability, Current Advance ticket sales Liabilities, Current Total current liabilities Long-Term Debt and Lease Obligation Long-term debt Other Liabilities, Noncurrent Other long-term liabilities Liabilities Total liabilities Commitments and Contingencies Commitments and contingencies (Note 10) Equity, Attributable to Parent [Abstract] Shareholders' equity: Common Stock, Value, Issued Ordinary shares, $0.001 par value; 980,000,000 shares authorized; 459,158,514 shares issued and outstanding at June 30, 2026 and 455,257,489 shares issued and outstanding at December 31, 2025 Additional Paid in Capital, Common Stock Additional paid-in capital Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income (loss) Retained Earnings (Accumulated Deficit) Accumulated deficit Equity, Attributable to Parent Balance Balance Total shareholders' equity Liabilities and Equity Total liabilities and shareholders' equity Common Stock, Par or Stated Value Per Share Ordinary shares, par value (in dollars per share) Common Stock, Shares Authorized Ordinary shares, authorized Common Stock, Shares, Issued Ordinary shares, issued Common Stock, Shares, Outstanding Ordinary shares, outstanding Statement of Cash Flows [Abstract] Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Cash flows from operating activities Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Depreciation, Depletion and Amortization Depreciation and amortization expense Gain (Loss) on Extinguishment of Debt Loss on extinguishment of debt Loss on extinguishment of debt Share-Based Payment Arrangement, Noncash Expense Share-based compensation expense Unrealized Gain (Loss), Foreign Currency Transaction, before Tax Net foreign currency adjustments on euro-denominated debt Other Noncash Income (Expense) Other, net Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Accounts Receivable Accounts receivable, net Increase (Decrease) in Inventories Inventories Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses and other assets Increase (Decrease) in Accounts Payable Accounts payable Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Accrued expenses and other liabilities Increase (Decrease) in Contract with Customer, Liability Advance ticket sales Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Net cash provided by operating activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Cash flows from investing activities Payments to Acquire Property, Plant, and Equipment Additions to property and equipment, net Payment for (Proceeds from) Other Investing Activity Other, net Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Net cash used in investing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Cash flows from financing activities Repayments of Long-Term Debt Repayments of long-term debt Proceeds from Issuance of Long-Term Debt Proceeds from long-term debt Proceeds from Issuance of Common Stock Common share issuance proceeds, net Payment, Tax Withholding, Share-Based Payment Arrangement Net share settlement of restricted share units Payment for Debt Extinguishment or Debt Prepayment Cost Early redemption premium Payments of Debt Issuance Costs Deferred financing fees and other Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Net cash provided by financing activities Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Net increase (decrease) in cash and cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Cash and cash equivalents at end of period Cash and cash equivalents at beginning of period Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Component [Domain] Common Stock [Member] Ordinary Shares Additional Paid-in Capital [Member] Additional Paid-in Capital AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) Retained Earnings [Member] Accumulated Deficit Increase (Decrease) in Stockholders' Equity [Roll Forward] APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Share-based compensation Stock Issued During Period, Value, Employee Benefit Plan Issuance of shares under employee related plans Stock Issued During Period, Value, New Issues Common share issuance proceeds, net Stock Issued During Period, Value, Conversion of Convertible Securities Common share issuance for NCLC exchangeable notes Amount of payments to satisfy an employee's income tax withholding obligation as part of a net-share settlement of a share-based award. Adjustments To Additional Paid In Capital Payments Related To Tax With Holding For Share Based Compensation Net share settlement of restricted share units Adjustments to Additional Paid in Capital, Other Other Organization Consolidation And Presentation Of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Description of Business and Organization Accounting Policies [Abstract] Basis of Presentation and Significant Accounting Policies [Text Block] Summary of Significant Accounting Policies Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Text Block] Revenue Recognition Leases [Abstract] Lessee, Operating Leases [Text Block] Leases Comprehensive Income (Loss) Note [Text Block] Accumulated Other Comprehensive Income (Loss) Property Plant And Equipment [Abstract] Property, Plant and Equipment Disclosure [Text Block] Property and Equipment, Net Long-term Debt, Unclassified [Abstract] Long-Term Debt [Text Block] Long-Term Debt Derivative Instruments And Hedging Activities Disclosure [Abstract] Derivatives and Fair Value [Text Block] Fair Value Measurements and Derivatives Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Compensation and Employee Benefit Plans [Text Block] Employee Benefits and Share-Based Compensation Commitments And Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies Other Income And Expenses [Abstract] Other Income and Other Expense Disclosure [Text Block] Other Income (Expense), Net Supplemental Cash Flow Information [Abstract] Cash Flow, Supplemental Disclosures [Text Block] Supplemental Cash Flow Information Subsequent Event Subsequent Events [Text Block] Subsequent Event Basis of Accounting, Policy [Policy Text Block] Liquidity, Basis of Presentation Earnings Per Share, Policy [Policy Text Block] Earnings Per Share Foreign Currency Transactions and Translations Policy [Policy Text Block] Foreign Currency Depreciation, Depletion, and Amortization [Policy Text Block] Depreciation and Amortization Expense Segment Reporting, Policy [Policy Text Block] Segment Reporting New Accounting Pronouncements, Policy [Policy Text Block] Recently Issued Accounting Guidance Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of reconciliation between basic and diluted EPS Reconciliation of Revenue from Segments to Consolidated [Table Text Block] Schedule of reconciliation of adjusted operating income to net income before income taxes Disaggregation of Revenue [Table Text Block] Schedule of revenues by destination Tabular disclosure of assets and liability leases. Schedule Of Assets And Liabilities Lease [Table Text Block] Schedule of lease balances Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of accumulated other comprehensive income (loss) Debt Disclosure [Abstract] Convertible Debt [Table Text Block] Schedule of exchangeable notes Tabular disclosure of recognition of interest expenses on debt instruments. Schedule of Interest Expense Recognition [Table Text Block] Schedule of interest expense of exchangeable notes Schedule of Maturities of Long-Term Debt [Table Text Block] Schedule of principal repayments on long-term debt including finance lease obligations Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Schedule of derivatives measured at fair value and disclosed by balance sheet location Tabular disclosure of derivative and other financial assets and liabilities that are subject to offsetting, including master netting arrangements. Offsetting Instruments Table [Text Block] Schedule of gross and net amounts recognized within assets and liabilities Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of effects of cash flow hedge accounting on accumulated other comprehensive income (loss) Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location [Table Text Block] Schedule of effects of cash flow hedge accounting on the consolidated financial statements of operations Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Tabular disclosure of the significant assumptions used during the year to estimate the fair value of equity instruments other than options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. Schedule of Share-Based Payment Award, Equity Instruments Other Than Options, Valuation Assumptions [Table Text Block] Schedule of key inputs used in the fair value of the MSU Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Schedule of summary of restricted share unit activity Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Schedule of compensation expense recognized for share-based compensation Other Commitments [Table Text Block] Schedule of minimum annual payments for contractual obligations Description Of Business And Organization [Table] Ships Launching Period [Axis] Ships Launching Period [Domain] Information of ships launching period in 2026 through 2036. Ships launching period in 2026 through 2036 [Member] Ships launching period in 2026 through 2036 Information of ships launching period in 2026 through 2037. Ships launching period in 2026 through 2037 [Member] Ships launching period in 2026 through 2037 Information of ships launching period in 2027 through 2037. Ships launching period in 2027 through 2037 [Member] Ships launching period in 2027 through 2037 Information of ships launching period in 2026 through 2030. Ships launching period in 2026 through 2030 [Member] Ships launching period in 2026 through 2030 Information of ships launching period in 2030 through 2037. Ships Launching Period In 2030 Through 2037 [Member] Ships launching period in 2030 through 2037 Information of ships launching period in 2027 and 2028. Ships Launching Period In 2027 And 2028 [Member] Ships launching period in 2027 and 2028 Description Of Business And Organization [Line Items] Represents number of cruise ships. Number Of Cruise Ships Number of cruise ships Number of cruise ships Represents ship passenger capacity berths. Ship Passenger Capacity Berths Capacity of ship, berths Represents number of additional cruise ships. Number Of Additional Cruise Ships Number of additional ships Represents number of additional ships that have the option to cancel. Number Of Additional Cruise Ships, Option To Cancel Number of additional cruise ships, option to cancel Represents number of classes of cruise ships. Number Of Classes Of Ships Number of classes of ships Schedule of Long-Term Debt Instruments [Table] Debt Instrument [Axis] Debt Instrument, Name [Domain] Represents information pertaining to Senior Secured Revolving Credit Facility. Revolving Loan Facility Debt Instrument [Line Items] Amount of available liquidity including cash and cash equivalent and short term investment. Available Liquidity Amount Available liquidity Substantial Doubt about Going Concern, within One Year [true false] Line of Credit Facility, Remaining Borrowing Capacity Undrawn revolving loan facility Debt Instrument, Face Amount Principal amount Share-Based Payment Arrangement [Member] Share Awards Dilutive Securities, Effect on Basic Earnings Per Share, Dilutive Convertible Securities Effect of dilutive securities - exchangeable notes Net Income (Loss) Attributable to Parent, Diluted Net income (loss) and assumed conversion of exchangeable notes - Diluted EPS Weighted Average Number of Shares Outstanding, Diluted, Adjustment Dilutive effect of share awards Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible debt securities using the if-converted method. Incremental Common Shares Attributable to Dilutive Effect of Exchangeable Notes Dilutive effect of exchangeable notes Schedule of Segment Reporting Information, by Segment [Table] Segments [Axis] Segments [Domain] Represents the information pertaining to single reportable segment. Single Reportable Segment [Member] Single reportable segment Segment Reporting Information [Line Items] The aggregate adjusted costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. Adjusted Cost of Goods and Services Sold Adjusted total cruise operating expense Amount of marketing, general and administrative expenses excluding non-cash share-based compensation expenses related to equity awards for corporate employees. Marketing, General and Administrative Expenses Excluding Non-cash Share-based Compensation Expenses Adjusted marketing, general and administrative Generally recurring adjusted costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. Adjusted Operating Expenses Adjusted total other operating expense Amount of adjusted operating income loss during the period. Adjusted Operating Income Loss Adjusted operating income Amount of non-cash deferred compensation expenses related to the crew pension plan and non-cash share-based compensation expenses related to equity awards. Non-Cash Deferred Compensation Expenses and Share-based Compensation Expenses Non-cash compensation, severance and professional advisory fees Defined Benefit Plan, Service Cost Service cost Professional Fees Professional advisory fees Restructuring Charges Severance costs and other fees Schedule Of Significant Accounting Policies [Table] Schedule Of Significant Accounting Policies [Table] Geographical [Axis] Geographical [Domain] UNITED STATES Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Revenue Benchmark [Member] Sales Revenue, Net Concentration Risk Type [Axis] Concentration Risk Type [Domain] Geographic Concentration Risk [Member] Geographic Concentration Risk Schedule Of Significant Accounting Policies [Line Items] Schedule Of Significant Accounting Policies [Line Items] Schedule Of Significant Accounting Policies [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Antidilutive securities excluded from computation of earnings per share Number of Reportable Segments Number of reportable segments Gain (Loss), Foreign Currency Transaction, before Tax Foreign currency transaction gain (loss) Concentration Risk, Benchmark Description Concentration risk, benchmark Concentration Risk, Percentage Percentage of revenue attributable to U.S.- sourced passengers Disclosure of information when using transition method for cumulative effect in initial period of application for revenue from contract with customer. Revenues, Initial Application Period Cumulative Effect Transition [Table] North America [Member] North America Europe [Member] Europe Asia Pacific [Member] Asia-Pacific Represents other region. Other Country Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Revenues, Initial Application Period Cumulative Effect Transition [Line Items] Receivable Type [Axis] Receivable [Domain] Credit Card Receivable [Member] In-transit Credit Card Receivables Contract with Customer, Liability Contract liabilities included within advance ticket sales Represents percentage of refundable amounts included within contract liabilities. Percentage Of Refundable Amounts Included Within Contract Liabilities Percentage of refundable amounts included within contract liabilities Contract with Customer, Liability, Revenue Recognized Revenue recognized included in contract liability Lessee, Lease, Description [Table] Location, Statement of Financial Position, Balance [Axis] Lessee, Lease, Description [Line Items] Lessee, Operating Lease, Description [Abstract] Operating leases Operating Lease, Right-of-Use Asset Right-of-use assets Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Operating lease, right-of-use asset - Extensible List Operating Lease, Liability, Current Current operating lease liabilities Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Operating lease liability, current - Extensible List Operating Lease, Liability, Noncurrent Non-current operating lease liabilities Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Operating lease liability, non-current - Extensible List Lessor, Operating Lease, Lease Not yet Commenced, Term of Contract Lease term (in years) Lessor, Operating Lease, Payment to be Received Aggregate lease payments Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Change Related to Shipboard Retirement Plan Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Change Related to Cash Flow Hedges Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] AOCI Attributable to Parent, Net of Tax [Roll Forward] Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Current period other comprehensive income (loss) before reclassifications Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Amounts reclassified into earnings Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred Amount of losses expected to be reclassified into earnings next 12 months Property, Plant and Equipment [Table] Property, Plant and Equipment [Line Items] Property, Plant and Equipment, Additions Capitalized costs Represents the information pertaining to Norwegian Aqua term loan. Norwegian Aqua Term Loan [Member] Norwegian Aqua Term Loan Represents the information pertaining to Norwegian Luna term loan. Norwegian Luna Term Loan [Member] Norwegian Luna Term Loan Represents information pertaining to exchangeable senior notes due 2030. Exchangeable Senior Notes Due 2030 [Member] 0.875% Exchangeable Senior Notes Due 2030 Represents information pertaining to exchangeable senior notes due 2030. Exchangeable Senior Notes Two Due 2030 [Member] 0.750% Exchangeable Senior Notes Due 2030 Represents the 1.125% exchangeable senior notes due 2027. 1.125% Exchangeable Senior Notes Due 2027 Represents the 2.5% exchangeable senior notes due 2027. 2.5% Exchangeable Senior Notes Due 2027 Location, Statement of Income, Balance [Axis] Financing percentage. Financing Percentage Export credit facility financing as percentage of contract price Long-Term Debt, Percentage Bearing Fixed Interest, Percentage Rate Fixed interest percentage rate Debt Instrument, Interest Rate, Effective Percentage Effective interest rate Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value, Inputs, Level 2 [Member] Level 2 Long-Term Debt, Gross Principal amount Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Unamortized debt discount, including deferred financing fees Long-Term Debt Net carrying amount Long-Term Debt, Fair Value Fair value of long-term debt Fair Value Interest Expense, Debt Coupon interest Amortization of Debt Issuance Costs Amortization of deferred financing fees Interest Expense, Nonoperating Total Long-Term Debt, Fiscal Year Maturity [Abstract] Long-Term Debt, Maturity, Remainder of Fiscal Year Remainder of 2026 Long-Term Debt, Maturity, Year One 2027 Long-Term Debt, Maturity, Year Two 2028 Long-Term Debt, Maturity, Year Three 2029 Long-Term Debt, Maturity, Year Four 2030 Long-Term Debt, Maturity, Year Five 2031 Long-Term Debt, Maturity, after Year Five Thereafter Long-Term Debt and Lease Obligation, Including Current Maturities Total Fair Value Disclosures [Abstract] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Financial Instrument [Axis] Financial Instruments [Domain] Derivative [Member] Total derivative Derivative Instrument [Axis] Derivative Contract [Domain] Represents information about fuel contracts. Fuel contracts Foreign Exchange Forward [Member] Foreign currency contracts Hedging Designation [Axis] Hedging Designation [Domain] Designated as Hedging Instrument [Member] Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Not Designated as Hedging Instrument Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Derivative Asset, Subject to Master Netting Arrangement, before Offset Derivative assets, fair value Gross Amounts, Assets Derivative Liability, Subject to Master Netting Arrangement, before Offset Derivative liabilities, fair value Gross Amounts, Liabilities Derivative Asset, Including Not Subject to Master Netting Arrangement, after Offset and Deduction Gross Amounts Offset, Assets Derivative, Fair Value, Net Total Net Amounts, Assets Derivative Asset, Subject to Master Netting Arrangement, before Offset of Collateral Gross Amounts Not Offset, Assets Derivative Asset Net Amounts, Assets Derivative Asset, Statement of Financial Position [Extensible Enumeration] Derivative Liability, Including Not Subject to Master Netting Arrangement, after Offset and Deduction Gross Amounts Offset, Liabilities This element represents amount of derivative liabilities. Derivative Fair Value Of Derivative Net Liabilities Total Net Amounts, Liabilities Derivative Liability, Subject to Master Netting Arrangement, before Offset of Collateral Gross Amounts Not Offset, Liabilities Derivative Liability Net Amounts, Liabilities Derivative Liability, Statement of Financial Position [Extensible Enumeration] Derivative Instruments, Gain (Loss) [Table] Hedging Relationship [Axis] Hedging Relationship [Domain] Cash Flow Hedging [Member] Cash Flow Hedging Location, Statement of Other Comprehensive Income, Balance [Axis] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net Amount of gain (loss) reclassified from accumulated other comprehensive income (loss) into income (expense) as a result that a forecasted transaction is no longer probable of occurring Fair Value, by Balance Sheet Grouping [Table] Foreign Exchange Contract [Member] Foreign exchange Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Derivative, Contract End Date Derivative maturing date Derivative, Nonmonetary Notional Amount Projected fuel purchases Derivative, Notional Amount Notional amount of derivatives Fair Value, Option, Aggregate Differences, Long-Term Debt Instruments Fair value of long-term debt in excess of carrying value Compensation And Retirement Disclosure [Abstract] Plan Name [Axis] Plan Name [Domain] Restated 2013 Performance Incentive Plan [Member] Restated 2013 Plan Restated 2013 Performance Incentive Plan Amended [Member] Restated 2013 Plan, Amended Represents time-based restricted stock units. Time-Based Awards Time-Based Awards Represents performance-based restricted stock units. Performance-Based RSU Awards Performance-Based Awards Restricted Stock Units (RSUs) [Member] RSU Represents market-based restricted stock units. Market-Based RSU Awards Market-based RSUs (MSU) Time-based share option awards. Time-Based Options Award Date [Axis] Award Date [Domain] Information of awards in March 2026. Awarded In March 2026 [Member] Awarded In March 2026 Title and Position [Axis] Title and Position [Domain] Information of Employee. Employee Management [Member] Members of management team Person with designation of President and Chief Executive Officer. President And Chief Executive Officer [Member] President and Chief Executive Officer Statistical Measurement [Axis] Statistical Measurement [Domain] Minimum [Member] Minimum Maximum [Member] Maximum Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Granted Share awards granted Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Share-based award, vesting period Represents the percent of payout based on the achievement of target. Percentage Of Payout Based On Achievement Of Target Payout percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period Share options expired and forfeited, in shares Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Share options expired and forfeited, weighted average exercise price Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized NCLH ordinary shares authorized Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized Number of additional shares authorized Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Expected share price volatility Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Risk-free interest rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Expected term Postemployment Benefits [Abstract] Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Number of Restricted Share Awards Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Non-vested as of June 30, 2026 Non-vested as of January 1, 2026 Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Vested Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Forfeited or expired Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Weighted- Average Grant-Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Non-vested as of June 30, 2026 Non-vested as of January 1, 2026 Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Granted Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Vested Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Forfeited or expired Share-Based Payment Arrangement, Expense Total share-based compensation expense Commitments and Contingencies Disclosure [Table] Commitments And Contingencies Disclosure [Table] Category of Item Purchased [Axis] Long-Term Purchase Commitment, Category of Item Purchased [Domain] Ship Construction Contracts [Member] Ship Construction Contracts Information of ships launching period in 2032 and 2035. Ships launching period in 2032 and 2035 [Member] Ships launching period in 2032 and 2035 Information of ships launching period in 2034 and 2036. Ships launching period in 2034 and 2036 [Member] Ships launching period in 2034 and 2036 Commitments and Contingencies Disclosure [Line Items] Commitments And Contingencies Disclosure [Line Items] Commitments and Contingencies Disclosure [Line Items] Gross tons. Gross Tons Capacity of ship, tons Represents the aggregate contract value. Contract Value Aggregate contract price of new ships Loss Contingency, New Claims Filed, Number Number of lawsuits filed Loss Contingency, Estimate of Possible Loss Estimate of possible loss Other Commitments [Table] Other Commitments [Line Items] Other Commitments [Line Items] Other Commitment, to be Paid, Remainder of Fiscal Year Remainder of 2026 Other Commitment, to be Paid, Year One 2027 Other Commitment, to be Paid, Year Two 2028 Other Commitment, to be Paid, Year Three 2029 Other Commitment, to be Paid, Year Four 2030 Other Commitment, to be Paid, Year Five 2031 Other Commitment, to be Paid, after Year Five Thereafter Other Commitment Total minimum annual payments Capital Expenditures Incurred but Not yet Paid Non-cash investing activity in connection with property and equipment