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General (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Feb. 28, 2025	Feb. 29, 2024	Nov. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Greenhouse gas regulatory expense	$ 6	$ 3	$ 3

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- Definition

Greenhouse Gas Regulatory Expense

+ References

No definition available.

+ Details

Name:	ccl_GreenhouseGasRegulatoryExpense
Namespace Prefix:	ccl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- References

No definition available.

+ Details

Name:	us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration