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Segment Information Segment Information - Selected Information for Cruise and Tour and Other Segments (Details 1) (USD $)
In Millions, unless otherwise specified
 12 Months Ended 1 Months Ended
Nov. 30, 2014
Segment
Apr. 30, 2013
ship
Nov. 30, 2012
ship
Segment Reporting Information [Line Items]      
Reportable cruise segments 3us-gaap_NumberOfReportableSegments    
Tour and Other      
Segment Reporting Information [Line Items]      
Gain on sale of ships   $ 15us-gaap_GainLossOnSaleOfPropertyPlantEquipment
/ us-gaap_StatementBusinessSegmentsAxis
= ccl_TourAndOtherMember		  
Number Of Cruise Ships 1ccl_NumberOfCruiseShips
/ us-gaap_StatementBusinessSegmentsAxis
= ccl_TourAndOtherMember		   2ccl_NumberOfCruiseShips
/ us-gaap_StatementBusinessSegmentsAxis
= ccl_TourAndOtherMember
Number of Ships Sold   1ccl_NumberofShipsSold
/ us-gaap_StatementBusinessSegmentsAxis
= ccl_TourAndOtherMember