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Property and Equipment (Details)	Apr. 30, 2017 Passenger
Property, Plant and Equipment [Abstract]
Passenger capacity	1,550

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- Definition

Passenger Capacity

+ References

No definition available.

+ Details

Name:	ccl_PassengerCapacity
Namespace Prefix:	ccl_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

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- References

No definition available.

+ Details

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