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Selected Measure [Text Block] Cover page. Cover [Abstract] Vessels and related assets Vessels And Related Assets, Gross Vessels And Related Assets, Gross United Kingdom UNITED KINGDOM Proceeds from issuance of long-term debt Proceeds from Issuance of Other Long-Term Debt 2027 Unrecorded Unconditional Purchase Obligation, to be Paid, Year One Equity Awards Adjustments Equity Awards Adjustments [Member] Total liabilities and shareholders' equity Liabilities and Equity Debt extinguishment and modification costs Debt extinguishment and modification costs Gain (Loss) on Extinguishment of Debt, before Debt Issuance Cost Writeoff Employee Stock Option Share-Based Payment Arrangement, Option [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Noncontrolling interests Equity, Attributable to Noncontrolling Interest Segments [Axis] Segments [Axis] Accrued liabilities and other Increase (Decrease) in Other Operating Liabilities Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Restructuring expenses Restructuring Charges Convertible Notes Payable Due December 2027 Convertible Notes Payable Due December 2027 [Member] Convertible Notes Payable Due December 2027 [Member] Tabular List, Table Tabular List [Table Text Block] Additional paid-in capital Additional Paid in Capital Fixed rate debt Fixed Rate [Member] Fixed Rate Other income (expense), net Other income (expense), net Other Nonoperating Income (Expense) Dilutive effect of Convertible Notes (in shares) Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities Name Awards Close in Time to MNPI Disclosures, Individual Name 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] Food Food Costs And Expenses, Food Costs And Expenses, Food Long-Lived Asset, Class [Domain] Long-Lived Asset, Class [Domain] Conversion of Convertible Notes Stock Issued During Period, Value, Conversion of Convertible Securities Trade and other receivables, net Receivables, Net, Current Adjustment to Compensation: Adjustment to Compensation [Axis] Number of class actions Loss Contingency, Pending Claims, Number Class of Stock [Domain] Class of Stock [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Credit Facility [Axis] Credit Facility [Axis] Residual value of original cost (percent) Property Plant And Equipment Residual Value As Percentage Of Original Cost The estimated value of an asset at the end of its useful life. 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Net income attributable to Carnival Corporation Ltd. Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Proceeds from sales of ships and other property and equipment Proceeds from Sale of Property, Plant, and Equipment Statement [Table] Statement [Table] Notes Payable Due January 2028 Notes Payable Due January 2028 [Member] Notes Payable Due January 2028 [Member] Restatement Determination Date: Restatement Determination Date [Axis] Debt instrument, convertible, liquidity component minimum threshold Debt Instrument, Convertible, Minimum Threshold Carrying Amount of Liquidity Component Debt Instrument, Convertible, Minimum Threshold Carrying Amount of Liquidity Component Interest income Interest income Investment Income, Interest Debt conversion, converted instrument, amount Debt Conversion, Converted Instrument, Amount Export Credit Facility Export Credit Facility [Member] Export Credit Facility Receivables Increase (Decrease) in Receivables Revenues [Abstract] Revenues [Abstract] Remainder of 2026 Unrecorded Unconditional Purchase Obligation, to be Paid, Remainder of Fiscal Year Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]