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Summary of Significant Accounting Policies (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Significant Accounting Policies      
Gross amount of port costs included in passenger ticket revenues $ 127.1rcl_PortCostsIncludedInRevenues $ 124.1rcl_PortCostsIncludedInRevenues  
Balance sheet reclass from Property and equipment to Other assets      
Significant Accounting Policies      
Prior Period Reclassification Adjustment     41.9us-gaap_PriorPeriodReclassificationAdjustment
/ rcl_ReclassificationLocationAxis
= rcl_BalanceSheetStatementMember
Cash flows reclass from Other to Net deferred income tax (benefit) expense      
Significant Accounting Policies      
Prior Period Reclassification Adjustment   $ 2.6us-gaap_PriorPeriodReclassificationAdjustment
/ rcl_ReclassificationLocationAxis
= rcl_CashFlowStatementMember