Commitments and Contingencies [Abstract] Commitments and Contingencies [Abstract] Contingencies Contingencies Disclosure [Text Block] Disclosure Reconciliation Of Changes In Carrying Amounts Of Intangible Assets Not Subject To Amortization Which Represents Trademarks [Abstract] Disclosure - Reconciliation of Changes in Carrying Amounts of Intangible Assets Not Subject to Amortization, Which Represents Trademarks [Abstract] Schedule of Indefinite-Lived Intangible Assets [Table] Schedule of Indefinite-Lived Intangible Assets [Table] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] North America Cruise Brands North America Cruise Brands [Member] North America Cruise Brands EAA Cruise Brands Europe Australia And Asia Cruise Brands [Member] Europe Australia And Asia Cruise Brands Indefinite-lived Intangible Assets [Line Items] Indefinite-lived Intangible Assets [Line Items] Indefinite-lived Intangible Assets [Roll Forward] Indefinite-lived Intangible Assets [Roll Forward] Beginning Balance Indefinite-Lived Intangible Assets (Excluding Goodwill) Foreign currency translation adjustment Indefinite-lived Intangible Assets, Translation and Purchase Accounting Adjustments Ending Balance Text Block [Abstract] Segment Information Segment Reporting Disclosure [Text Block] Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Common Stock Common Stock [Member] Ordinary Shares Ordinary Shares [Member] Ordinary Shares Statement [Line Items] Statement [Line Items] ASSETS Assets [Abstract] Current Assets Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Trade and other receivables, net Receivables, Net, Current Insurance recoverables Insurance Settlements Receivable, Current Inventories Inventory, Net Prepaid expenses and other Other Assets, Current Total current assets Assets, Current Property and Equipment, Net Property, Plant and Equipment, Net Goodwill Goodwill Other Intangibles Intangible Assets, Net (Excluding Goodwill) Other Assets Other Assets, Noncurrent Total assets Assets LIABILITIES AND SHAREHOLDERS' EQUITY Liabilities and Equity [Abstract] Current Liabilities Liabilities, Current [Abstract] Short-term borrowings Short-term Debt Current portion of long-term debt Long-term Debt, Current Maturities Accounts payable Accounts Payable, Current Claims reserve Loss Contingency, Accrual, Current Accrued liabilities and other Accrued Liabilities, Current Customer deposits Customer Deposits, Current Total current liabilities Liabilities, Current Long-Term Debt Long-term Debt, Excluding Current Maturities Other Long-Term Liabilities Other Liabilities, Noncurrent Contingencies Commitments and Contingencies Shareholders' Equity Stockholders' Equity Attributable to Parent [Abstract] Common stock Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Treasury stock, 59 shares at 2014 and 2013 of Carnival Corporation and 32 shares at 2014 and 2013 of Carnival plc, at cost Treasury Stock, Value Total shareholders' equity Stockholders' Equity Attributable to Parent Liabilities and Equity, Total Liabilities and Equity Common stock, par value (USD per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Treasury stock, shares Treasury Stock, Shares Disclosure Estimated Fair Value And Basis Of Valuation Of Financial Instrument Assets And Liabilities Measured At Fair Value On Recurring Basis [Abstract] Disclosure - Estimated Fair Value and Basis of Valuation of Financial Instrument Assets And (Liabilities) Measured at Fair Value on Recurring Basis [Abstract] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Financial Instruments Measured at Fair Value on a Recurring Basis Fair Value, Measurements, Recurring [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Financial Instrument [Axis] Financial Instrument [Axis] Types of Financial Instruments [Domain] Financial Instruments [Domain] Money market funds Money Market Funds [Member] Marketable securities held in rabbi trusts Marketable Securities Held In Rabbi Trusts [Member] Marketable Securities Held In Rabbi Trusts Derivative financial instruments Derivative Financial Instruments, Assets [Member] Long-term other assets Other Noncurrent Assets [Member] Derivative financial instruments Derivative Financial Instruments, Liabilities [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Assets Assets, Fair Value Disclosure [Abstract] Cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Restricted cash Restricted Cash And Cash Equivalents Fair Value Disclosure Restricted Cash and Cash Equivalents, Fair Value Disclosure Marketable securities held in rabbi trusts Investments, Fair Value Disclosure Derivative financial instruments Derivative Asset, Fair Value, Gross Asset Long-term other assets Other Assets, Fair Value Disclosure Total Assets, Fair Value Disclosure Liabilities Liabilities, Fair Value Disclosure [Abstract] Derivative financial instruments Derivative Liability, Fair Value, Gross Liability Total Financial and Nonfinancial Liabilities, Fair Value Disclosure Fair Value Disclosures [Abstract] Offsetting Derivative Instruments [Table] Offsetting Derivative Instruments [Table] Offsetting Derivative Instruments [Table] Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] Derivative Financial Instruments, Assets [Member] Liability Class [Axis] Liability Class [Axis] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Derivative Financial Instruments, Liabilities [Member] Offsetting Derivative Instruments [Line Items] Offsetting Derivative Instruments [Line Items] [Line Items] for Offsetting Derivative Instruments [Table] Derivative Asset, Fair Value, Gross Asset Derivative Asset, Fair Value, Amount Offset Against Collateral Derivative Asset, Fair Value, Amount Offset Against Collateral Derivative, Fair Value, Net Derivative, Fair Value, Net Derivative Asset, Fair Value, Amount Not Offset Against Collateral Derivative Asset, Fair Value, Amount Not Offset Against Collateral Derivative Asset Derivative Asset Derivative Liability, Fair Value, Gross Liability Derivative Liability, Fair Value, Amount Offset Against Collateral Derivative Liability, Fair Value, Amount Offset Against Collateral Derivative Liability, Fair Value, Amount Not Offset Against Collateral Derivative Liability, Fair Value, Amount Not Offset Against Collateral Derivative Liability Derivative Liability Organization, Consolidation and Presentation of Financial Statements [Abstract] Fees, taxes and charges collected by us from our guests Taxes fees and port expenses collected by us from our guests Taxes fees and port expenses collected by us from our guests Cost of Property Repairs and Maintenance Cost of Property Repairs and Maintenance General Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Disclosure Debt Additional Information [Abstract] Disclosure Debt Additional Information [Abstract] Schedule Of Debt Outstanding [Table] Schedule Of Debt Outstanding [Table] Schedule of Debt Outstanding [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Lender Name [Axis] Lender Name [Axis] Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Main Credit Facility [Member] Main Credit Facility [Member] Main Credit Facility [Member] Regal Princess [Axis] Regal Princess [Axis] Regal Princess [Axis] Regal Princess [Domain] Regal Princess [Domain] [Domain] for Regal Princess [Axis] Unsecured Floating Rate Export Credit Facilities [Member] Unsecured Floating Rate Export Credit Facilities [Member] Unsecured Floating Rate Export Credit Facilities [Member] Short-term Debt, Type [Axis] Short-term Debt, Type [Axis] Short-term Debt, Type [Domain] Short-term Debt, Type [Domain] Commercial Paper [Member] Commercial Paper [Member] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] January 2014 Repayment [Domain] January 2014 Repayment [Domain] January 2014 Repayment [Domain] May 2014 repayment date [Domain] May 2014 repayment date [Domain] May 2014 repayment date [Domain] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Euro Denominated [Member] Euro Denominated [Member] Euro Denominated [Member] United States Dollar Denominated Debt [Member] United States Dollar Denominated Debt [Member] U.S Dollar Denominated Debt [Member] Revolving Credit Facility [Member] Revolving Credit Facility [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Sterling Denominated Debt [Member] Sterling Denominated Debt [Member] Sterling Denominated Debt [Member] Unsecured Floating Rate Euro Denominated Revolving Bank Loan Facility [Domain] Unsecured Floating Rate Euro Denominated Revolving Bank Loan Facility [Domain] Unsecured Floating Rate Euro Denominated Revolving Bank Loan Facility [Domain] Unsecured Floating Rate Bank Loan [Member] Unsecured Floating Rate Bank Loan [Member] Unsecured Floating Rate Bank Loan [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Debt, Current Debt, Current Debt Instrument, Interest Rate at Period End Debt Instrument, Interest Rate at Period End Debt Instrument Maturity Month Year Debt Instrument Maturity Month Year Debt Instrument Maturity Month Year Long-term debt Unsecured Long-term Debt, Noncurrent Debt Instrument, Interest Rate Terms Debt Instrument, Interest Rate Terms Line of Credit Facility, Commitment Fee Percentage Line of Credit Facility, Commitment Fee Percentage Income Statement [Abstract] Revenues Revenues [Abstract] Cruise Revenue, Net [Abstract] Passenger tickets Passenger Revenue Onboard and other Onboard And Other This is the sale of goods and/or services primarily onboard our ships (which include bar and some beverage sales, casino gaming, shore excursions, gift shop and spa sales and photo and art sales) and pre and post-cruise land packages. These goods and services are either provided directly by us or by independent concessionaires, from which we receive a percentage of their revenues or a fee. Tour and other Other Revenue, Net Revenues Sales Revenue, Services, Other Operating Costs and Expenses Costs and Expenses [Abstract] Cruise Cost of Revenue [Abstract] Commissions, transportation and other Cruise Commissions Transportation And Other Cruise costs of commissions, transportation and other. Onboard and other Cost Of Onboard And Other This represents costs that vary directly with onboard and other revenues, and include the costs of liquor and some beverages, costs of tangible goods sold by us from our gift, photo and art auction activities, pre and post-cruise land packages and credit card fees. Concession revenues do not have any significant amount of costs associated with them, as the costs and services incurred for these activities are provided by our concessionaires. Fuel Fuel Costs Payroll and related Cost of Services, Direct Labor Food Food and Beverage, Cost of Sales Other ship operating Other Cost and Expense, Operating Tour and other Other Cost of Operating Revenue Operating expenses Cost of Revenue Selling and administrative Selling, General and Administrative Expense Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Costs and Expenses Costs and Expenses Operating income Operating Income (Loss) Nonoperating (Expense) Income Nonoperating Income (Expense) [Abstract] Interest income Investment Income, Interest Interest expense, net of capitalized interest Interest Expense Losses on fuel derivatives, net Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Other income (expense), net Other Nonoperating Income (Expense) Nonoperating (Expense) Income, Total Nonoperating Income (Expense) Income Before Income Taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Income Tax Expense, Net Income Tax Expense (Benefit) Net Income Net Income (Loss) Attributable to Parent Earnings Per Share, Basic and Diluted Earnings Per Share, Basic and Diluted Dividends Declared Per Share (USD per share) Common Stock, Dividends, Per Share, Declared Disclosure Reconciliation Of Changes In Carrying Amounts Of Goodwill [Abstract] Disclosure - Reconciliation of Changes in Carrying Amounts of Goodwill [Abstract] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Goodwill [Line Items] Goodwill [Line Items] Goodwill [Roll Forward] Goodwill [Roll Forward] Beginning Balance Foreign currency translation adjustment Goodwill, Translation and Purchase Accounting Adjustments Ending Balance Debt Debt Disclosure [Text Block] Disclosure Selected Information For Cruise And Tour And Other Segments [Abstract] Disclosure - Selected Information for Cruise and Tour and Other Segments [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Cruise Support Cruise [Member] Cruise Tour and Other Tour And Other [Member] Tour And Other Intersegment Eliminations [Member] Intersegment Eliminations [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Number of Reportable Segments Number of Reportable Segments Revenues Operating expenses Disclosure Estimated Carrying And Fair Values Of Financial Instrument Assets And Liabilities Not Measured At Fair Value On Recurring Basis [Abstract] Disclosure - Estimated Carrying and Fair Values of Financial Instrument Assets and (Liabilities) Not Measured at Fair Value on Recurring Basis [Abstract] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Financial Instruments Not Measured at Fair Value on a Recurring Basis Fair Value, Measurements, Nonrecurring [Member] Fair Value, by Balance Sheet Grouping, Disclosure Item Amounts [Axis] Measurement Basis [Axis] Fair Value, Disclosure Item Amounts [Domain] Fair Value Measurement [Domain] Carrying Value Reported Value Measurement [Member] Fair Value Estimate of Fair Value Measurement [Member] Fixed Rate Fixed Rate [Member] Fixed Rate Floating Rate Floating Rate [Member] Floating Rate Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Cash and cash equivalents Debt Long-term Debt, Fair Value Estimated Carrying and Fair Values of Financial Instrument Assets and (Liabilities) Not Measured at Fair Value on a Recurring Basis Cost And Fair Value Of Financial Instruments Disclosure [Text Block] Cost and Fair Value of Financial Instruments Disclosure Estimated Fair Value and Basis of Valuation of Financial Instrument Assets and (Liabilities) Measured at Fair Value on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Reconciliation of Changes in Carrying Amounts of Goodwill Schedule of Goodwill [Table Text Block] Reconciliation of Changes in Carrying Amounts of Intangible Assets Not Subject to Amortization, which Represents Trademarks Schedule of Indefinite-Lived Intangible Assets [Table Text Block] Estimated Fair Values of Derivative Financial Instruments and Location on Consolidated Balance Sheets Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location [Table Text Block] Offsetting Derivative Instruments [Table Text Block] Offsetting Derivative Instruments [Table Text Block] [Table Text Block] for Offsetting Derivative Instruments [Table] Derivatives Qualifying and Designated as Hedging Instruments Recognized in Other Comprehensive Income Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block] Fuel Derivatives Outstanding Schedule of Derivative Instruments [Table Text Block] Earnings Per Share Earnings Per Share [Text Block] Statement of Cash Flows [Abstract] OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities [Abstract] Net Income Adjustments to reconcile net income to net cash provided by operating activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] (Gains) on ship sales including impairment, net Loss (Gains) on ship sales including impairment, net Loss (Gains) on ship sales including impairment, net Losses on fuel derivatives, net Share-based compensation Share-based Compensation Other, net Other Noncash Income (Expense) Changes in operating assets and liabilities Increase (Decrease) in Operating Capital [Abstract] Receivables Increase (Decrease) in Receivables Inventories Increase (Decrease) in Inventories Insurance recoverables, prepaid expenses and other Increase (Decrease) in Other Operating Assets Accounts payable Increase (Decrease) in Accounts Payable Claims reserves and accrued and other liabilities Increase (Decrease) in Other Operating Liabilities Customer deposits Increase (Decrease) in Customer Deposits Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities INVESTING ACTIVITIES Net Cash Provided by (Used in) Investing Activities [Abstract] Additions to property and equipment Payments to Acquire Property, Plant, and Equipment Proceeds from sale of ships Proceeds from sale of ships Proceeds from sale of ships Other, net Payments for (Proceeds from) Other Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities FINANCING ACTIVITIES Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from (repayments of) short-term borrowings, net Proceeds from (Repayments of) Short-term Debt Principal repayments of long-term debt Repayments of Other Long-term Debt Proceeds from issuance of long-term debt Proceeds from Issuance of Other Long-term Debt Dividends paid Payments of Dividends Purchases of treasury stock Payments for Repurchase of Common Stock Sales of treasury stock Proceeds from Sale of Treasury Stock Other, net Proceeds from (Payments for) Other Financing Activities Net cash (used in) provided by financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash and Cash Equivalents Net (decrease) increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Document Documentand Entity Information [Abstract] Document Documentand Entity Information [Abstract] CARNIVAL PLC Carnival Public Limited Company [Member] Carnival PLC [Member] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Current Reporting Status Entity Current Reporting Status Entity Voluntary Filers Entity Voluntary Filers Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Disclosure Fuel Derivatives Outstanding [Abstract] Disclosure - Fuel Derivatives Outstanding [Abstract] Derivative [Table] Derivative [Table] Derivative, by Nature [Axis] Derivative, by Nature [Axis] Derivative, Name [Domain] Derivative, Name [Domain] Fuel Derivatives 2014 Maturity November 2011 Transaction Date Fuel Derivatives Twenty Fourteen Maturity November Twenty Eleven Transaction [Member] Fuel Derivatives Twenty Fourteen Maturity November Twenty Eleven Transaction [Member] Fuel Derivatives 2014 Maturity February 2012 Transaction Date Fuel Derivatives Twenty Fourteen Maturity February Twenty Twelve Transaction [Member] Fuel Derivatives Twenty Fourteen Maturity February Twenty Twelve Transaction [Member] Fuel Derivatives 2014 Maturity June 2012 Transaction Date Fuel Derivatives Twenty Fourteen Maturity June Twenty Twelve Transaction [Member] Fuel Derivatives Twenty Fourteen Maturity June Twenty Twelve Transaction [Member] Fuel Derivatives 2014 Maturity May 2013 Transaction Fuel Derivatives Twenty Fourteen May Twenty Thirteen Transaction [Domain] Fuel Derivatives Twenty Fourteen May Twenty Thirteen Transaction [Domain] Fuel Derivatives 2014 Maturity Fuel Derivatives Twenty Fourteen Maturity [Member] Fuel Derivatives 2014 Maturity Fuel Derivatives 2015 Maturity November 2011 Transaction Date Fuel Derivatives Twenty Fifteen Maturity November Twenty Eleven Transaction [Member] Fuel Derivatives Twenty Fifteen Maturity November Twenty Eleven Transaction [Member] Fuel Derivatives 2015 Maturity February 2012 Transaction Date Fuel Derivatives Twenty Fifteen Maturity February Twenty Twelve Transaction [Member] Fuel Derivatives Twenty Fifteen Maturity February Twenty Twelve Transaction [Member] Fuel Derivatives 2015 Maturity June 2012 Transaction Date Fuel Derivatives Twenty Fifteen Maturity June Twenty Twelve Transaction [Member] Fuel Derivatives Twenty Fifteen Maturity June Twenty Twelve Transaction [Member] Fuel Derivatives 2015 Maturity April 2013 Transaction Date Fuel Derivatives Twenty Fifteen Maturity April Twenty Thirteen Transaction [Domain] Fuel Derivatives Twenty Fifteen Maturity April Twenty Thirteen Transaction [Domain] Fuel Derivatives 2015 Maturity May 2013 Transaction Date Fuel Derivatives Twenty Fifteen Maturity May Twenty Thirteen Transaction [Domain] Fuel Derivatives Twenty Fifteen Maturity May Twenty Thirteen Transaction [Domain] Fuel Derivatives 2015 Maturity Fuel Derivatives Twenty Fifteen Maturity [Member] Fuel Derivatives 2015 Maturity Fuel Derivatives 2016 Maturity June 2012 Transaction Date Fuel Derivatives Twenty Sixteen Maturity June Twenty Twelve Transaction [Member] Fuel Derivatives Twenty Sixteen Maturity June Twenty Twelve Transaction [Member] Fuel Derivatives 2016 Maturity February 2013 Transaction Date Fuel Derivatives Twenty Sixteen Maturity February Twenty Thirteen Transaction [Member] Fuel Derivatives Twenty Sixteen Maturity February Twenty Thirteen Transaction [Member] Fuel Derivatives 2016 Maturity April 2013 Transaction Date Fuel Derivatives Twenty Sixteen Maturity April Twenty Thirteen Transaction [Domain] Fuel Derivatives Twenty Sixteen Maturity April Twenty Thirteen Transaction [Domain] Fuel Derivatives 2016 Maturity Fuel Derivatives Twenty Sixteen Maturity [Member] Fuel Derivatives 2016 Maturity Fuel Derivatives 2017 Maturity February 2013 Transaction Date Fuel Derivatives Twenty Seventeen Maturity February Twenty Thirteen Transaction [Member] Fuel Derivatives 2017 Maturity February 2013 Transaction [Member] Fuel Derivatives 2017 Maturity April 2013 Transaction Date Fuel Derivatives Twenty Seventeen Maturity April Twenty Thirteen Transaction [Domain] Fuel Derivatives Twenty Seventeen Maturity April Twenty Thirteen Transaction [Domain] Fuel Derivatives 2017 Maturity Date January 2014 Transaction Date Fuel Derivatives 2017 Maturity Date January Twenty Fourteen Transaction [Domain] Fuel Derivatives 2017 Maturity Date January Twenty Fourteen Transaction [Domain] Fuel Derivatives 2017 Maturity Fuel Derivatives Twenty Seventeen Maturity [Member] Fuel Derivatives Twenty Seventeen Maturity [Member] Fuel Derivatives 2018 Maturity January 2014 Transaction Date Fuel Derivatives 2018 Maturity January 2014 Transaction [Domain] Fuel Derivatives 2018 Maturity January 2014 Transaction [Domain] Fuel Derivatives 2018 Maturity Fuel Derivatives 2018 Maturity [Member] Fuel Derivatives 2018 Maturity [Member] Derivative [Line Items] Derivative [Line Items] Barrels Derivative, Nonmonetary Notional Amount Weighted-Average Floor Price Derivative, Floor Price Weighted-Average Ceiling Price Derivative, Cap Price Percent of Estimated Fuel Consumption Derivative, Nonmonetary Notional Amount, Percent of Required Need, Coverage Derivative Inception Month And Year Derivative Inception Month And Year Derivative, Inception Month and Year Disclosure Derivatives Qualifying And Designated As Hedging Instruments Recognized In Other Comprehensive Income [Abstract] Disclosure - Derivatives Qualifying and Designated as Hedging Instruments Recognized in Other Comprehensive Income [Abstract] Derivative Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table] Derivative Instruments, Gain (Loss) [Table] Financial Instruments [Domain] Net Investment Hedging [Member] Net Investment Hedging [Member] Foreign Exchange Option [Member] Foreign Exchange Option [Member] Interest rate swaps Interest Rate Swap [Member] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Designated as hedging instruments Designated as Hedging Instrument [Member] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Effective portions of derivatives qualifying and designated as hedging instruments recognized in other comprehensive income Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net Statement of Comprehensive Income [Abstract] Items Included in Other Comprehensive Income (Loss) Other Comprehensive Income (Loss), Net of Tax [Abstract] Change in foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Other Other Comprehensive Income, Other, Net of Tax Other Comprehensive (Loss) Income Other Comprehensive Income (Loss), Net of Tax Total Comprehensive Income (Loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Selected Information for Cruise and Tour and Other Segments Schedule of Segment Reporting Information, by Segment [Table Text Block] Disclosure Estimated Fair Values Of Derivative Financial Instruments And Location On Consolidated Balance Sheets [Abstract] Disclosure - Estimated Fair Values of Derivative Financial Instruments and Location on Consolidated Balance Sheets [Abstract] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Maximum Maximum [Member] Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Fair Value Hedging [Member] Fair Value Hedging [Member] Cash Flow Hedging [Member] Cash Flow Hedging [Member] Net investment hedges Foreign currency zero cost collars Interest rate swaps Fuel Fuel [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Prepaid expenses and other Prepaid Expenses And Other Assets [Member] Prepaid Expenses and Other Assets [Member] Other assets - long-term Other Non Current Asset [Member] Other Non Current Asset [Member] Accrued liabilities and other Accrued Liabilities And Other Liabilities [Member] Accrued Liabilities And Other Liabilities [Member] Other long-term liabilities Other Longterm Liabilities [Member] Other Long-Term Liabilities Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Derivative, Average Cap Price Derivative, Average Cap Price Derivative Instruments in Hedges, Net Investment in Foreign Operations, Assets, Fair Value Derivative Instruments in Hedges, Net Investment in Foreign Operations, Assets, Fair Value Interest Rate Cash Flow Hedge Asset at Fair Value Interest Rate Cash Flow Hedge Asset at Fair Value Foreign Currency Cash Flow Hedge Asset at Fair Value Foreign Currency Cash Flow Hedge Asset at Fair Value Interest Rate Fair Value Hedge Asset at Fair Value Interest Rate Fair Value Hedge Asset at Fair Value Derivative assets designated as hedging instruments Derivative Instruments in Hedges, Assets, at Fair Value Derivative assets not designated as hedging instruments Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value Derivative, Fair Value, Net Derivative liabilities designated as hedging instruments Derivative Instruments in Hedges, Liabilities, at Fair Value Derivative liabilities not designated as hedging instruments Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value Disclosure Basic And Diluted Earnings Per Share Computation [Abstract] Disclosure - Basic and Diluted Earnings Per Share Computation [Abstract] Weighted-average common and ordinary shares outstanding Weighted Average Number of Shares Outstanding, Basic Dilutive effect of equity plans Incremental Common Shares Attributable to Dilutive Effect of Equity Unit Purchase Agreements Diluted weighted-average shares outstanding Weighted Average Number of Shares Outstanding, Diluted Anti-dilutive equity awards excluded from diluted (loss) earnings per share computations Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Basic and Diluted Earnings Per Share Computation Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Disclosure Contingencies Additional Information [Abstract] Disclosure Contingencies Additional Information [Abstract] Contingencies [Table] Contingencies [Table] Contingencies [Table] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Lease Out And Lease Back Type Transactions Lease Out And Lease Back Type Transactions [Member] Lease Out And Lease Back Type Transactions Contingencies [Line Items] Contingencies [Line Items] Contingencies [Line Items] Estimated contingent obligations Contingent Obligations A liability that is not currently a liability but may become one upon the happening of some future event. It is an obligation that may result, but is not likely to result because the event causing the obligation is improbable. If the event becomes probable and reasonable estimable, then it's considered a liability. Estimated termination payment in the event that Carnival Corporation were to default on its contingent obligations and assuming performance by all other participants Loss Contingency, Range of Possible Loss, Maximum Required standby letter of credit if Carnival Corporation's credit rating falls below BBB Disclosure Fair Value Measurements Derivative Instruments And Hedging Activities Additional Information [Abstract] Disclosure - Fair Value Measurements, Derivative Instruments and Hedging Activities - Additional Information [Abstract] Fair Value, Measurement Inputs, Disclosure [Table] Fair Value Measurement Inputs Disclosure [Table] Fair Value, Measurement Inputs, Disclosure [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Costa Voyager [Member] Costa Voyager [Member] Costa Voyager [Member] Grand Celebration [Domain] Grand Celebration [Domain] Grand Celebration [Domain] Minimum Minimum [Member] Foreign Currency Intercompany Payable Foreign Currency Intercompany Payable [Member] Foreign Currency Intercompany Payable [Member] Fair Value, Measurement Inputs, Disclosure [Line Items] Fair Value Measurement Inputs Disclosure [Line Items] Fair Value, Measurement Inputs, Disclosure [Line Items] Gain on Disposition of Property Plant Equipment Gain (Loss) on Disposition of Property Plant Equipment Goodwill, Impaired, Accumulated Impairment Loss Goodwill, Impaired, Accumulated Impairment Loss Derivative asset, cash collateral netting threshold, fair value Derivative Cash Collateral To Be Posted Or Received Fair Value Interest-bearing, non-restricted cash to be posted or received as collateral to the extent the fuel derivative fair value payable to or receivable from an individual counterparty, respectively, exceeds the contractual threshold. Designated debt and other obligations as non-derivative hedges of net investments in foreign operations Notional Amount of Nonderivative Instruments Cumulative foreign currency transaction gains and (losses) included in the cumulative translation adjustment component of AOCI Accumulated Other Comprehensive Income Gain (Loss) Net Investment Hedge Net Of Tax Accumulated Other Comprehensive Income Loss Net Investment Hedge Net of Tax Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Weighted-average floor rate (GBP per Euro in July) Derivative, Average Floor Price Foreign currency contract commitments Fair Value, Concentration of Risk, Foreign Currency Contracts Percentage of debt bore fixed interest rates, including the effect of interest rate swaps Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate Percentage of debt bore floating interest rates, including the effect of interest rate swaps Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate Impairment of Long-Lived Assets Impairment of Long-Lived Assets to be Disposed of Fair Value Measurements, Derivative Instruments and Hedging Activities Fair Value, Measurement Inputs, Disclosure [Text Block] Fuel Derivatives Twenty Eighteen Maturity Jan Twenty Fourteen Transaction [Domain] Fuel Derivatives Twenty Eighteen Maturity Jan Twenty Fourteen Transaction [Domain] Fuel Derivatives Twenty Eighteen Maturity Jan Twenty Fourteen Transaction [Domain] Maturing In July Twenty Seventeen [Member] Maturing In July Twenty Seventeen [Member] Maturing in July Twenty seventeen [Member] Currency Type [Axis] Currency Type [Axis] Currency Type [Axis] Currency Type [Domain] Currency Type [Domain] Currency Type [Domain] Us Dollar [Member] Us Dollar [Member] Us Dollar [Member] Cash Flow Hedging Maturity Of Foreign Currency Derivatives Month And Year Maturity Of Foreign Currency Derivatives Month And Year Maturity of Foreign Currency Derivatives, Month and Year Derivative Maturity Month And Year Derivative Maturity Month And Year Derivative, Maturity Month and Year