Summary of Significant Accounting Policies (Passenger Ticket Revenues) (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Number of cruise brands wholly owned	5
Investment in a joint venture, percentage of interest	50.00%
Number of operating segments	1
United States
Passengers ticket revenue, percentage
Passengers ticket revenue, percentage	52.00%	51.00%	51.00%
All other countries
Passengers ticket revenue, percentage
Passengers ticket revenue, percentage	48.00%	49.00%	49.00%
TUI Cruises
Segment Reporting Information [Line Items]
Investment in a joint venture, percentage of interest	50.00%