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Fair Value Measurements, Derivative Instruments and Hedging Activities - Foreign Currency Exchange Rate Risks (Detail) (USD $)
3 Months Ended 0 Months Ended 1 Months Ended
Feb. 28, 2015
Feb. 28, 2014
Feb. 28, 2015
Nov. 30, 2014
Feb. 28, 2015
Jan. 31, 2015
Fair Value, Measurement Inputs, Disclosure [Line Items]            
Cumulative foreign currency transaction gains and (losses) included in the cumulative translation adjustment component of AOCI $ 431,000,000ccl_AccumulatedOtherComprehensiveIncomeGainLossNetInvestmentHedgeNetOfTax   $ 431,000,000ccl_AccumulatedOtherComprehensiveIncomeGainLossNetInvestmentHedgeNetOfTax $ 359,000,000ccl_AccumulatedOtherComprehensiveIncomeGainLossNetInvestmentHedgeNetOfTax $ 431,000,000ccl_AccumulatedOtherComprehensiveIncomeGainLossNetInvestmentHedgeNetOfTax  
Foreign currency transaction gains (losses) 72,000,000us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax (40,000,000)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax        
Foreign currency contract commitments 1,600,000,000us-gaap_FairValueConcentrationOfRiskForeignCurrencyContracts   1,600,000,000us-gaap_FairValueConcentrationOfRiskForeignCurrencyContracts   1,600,000,000us-gaap_FairValueConcentrationOfRiskForeignCurrencyContracts  
Percentage of debt bore fixed interest rates, including the effect of interest rate swaps 49.00%us-gaap_LongTermDebtPercentageBearingFixedInterestRate   49.00%us-gaap_LongTermDebtPercentageBearingFixedInterestRate 52.00%us-gaap_LongTermDebtPercentageBearingFixedInterestRate 49.00%us-gaap_LongTermDebtPercentageBearingFixedInterestRate  
Percentage of debt bore floating interest rates, including the effect of interest rate swaps 51.00%us-gaap_LongTermDebtPercentageBearingVariableInterestRate   51.00%us-gaap_LongTermDebtPercentageBearingVariableInterestRate 48.00%us-gaap_LongTermDebtPercentageBearingVariableInterestRate 51.00%us-gaap_LongTermDebtPercentageBearingVariableInterestRate  
Foreign Currency Intercompany Payable            
Fair Value, Measurement Inputs, Disclosure [Line Items]            
Designated debt and other obligations as non-derivative hedges of net investments in foreign operations     1,800,000,000us-gaap_NotionalAmountOfNonderivativeInstruments
/ us-gaap_DebtInstrumentAxis
= ccl_ForeignCurrencyIntercompanyPayableMember
2,400,000,000us-gaap_NotionalAmountOfNonderivativeInstruments
/ us-gaap_DebtInstrumentAxis
= ccl_ForeignCurrencyIntercompanyPayableMember
   
Foreign currency zero cost collars | Princess Cruises | Cash Flow Hedging | Maximum            
Fair Value, Measurement Inputs, Disclosure [Line Items]            
Currency exchange risk hedged           590,000,000us-gaap_ForeignCurrencyCashFlowHedgeAssetAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeOptionMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= ccl_PrincessCruisesMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
Foreign currency zero cost collars | Princess Cruises | Cash Flow Hedging | Minimum            
Fair Value, Measurement Inputs, Disclosure [Line Items]            
Currency exchange risk hedged           504,000,000us-gaap_ForeignCurrencyCashFlowHedgeAssetAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeOptionMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= ccl_PrincessCruisesMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
Foreign currency zero cost collars | Seabourn Cruises | Cash Flow Hedging | Maximum            
Fair Value, Measurement Inputs, Disclosure [Line Items]            
Currency exchange risk hedged           221,000,000us-gaap_ForeignCurrencyCashFlowHedgeAssetAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeOptionMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= ccl_SeabournCruisesMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
Foreign currency zero cost collars | Seabourn Cruises | Cash Flow Hedging | Minimum            
Fair Value, Measurement Inputs, Disclosure [Line Items]            
Currency exchange risk hedged           185,000,000us-gaap_ForeignCurrencyCashFlowHedgeAssetAtFairValue
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeOptionMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= ccl_SeabournCruisesMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
Foreign currency zero cost collars | P&O Cruises (UK) Britannia | Cash Flow Hedging            
Fair Value, Measurement Inputs, Disclosure [Line Items]            
Settlement of foreign currency zero cost collars, amount of loss recognized in other comprehensive loss         $ 33,000,000us-gaap_DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeOptionMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= ccl_POCruisesUKBritanniaMember