Commitments and Contingencies (Details) (USD $)	3 Months Ended
	Mar. 31, 2013 item	Dec. 31, 2012
Commitments and Contingencies
Approximate Berths	18,700
Aggregate cost of ships expected to enter service	$ 3,500,000,000
Deposit for the purchase of ships expected to enter service	202,900,000
Percentage of aggregate cost exposed to fluctuations in the euro exchange rate	46.70%	49.70%
Oasis-class: Unnamed
Commitments and Contingencies
Approximate Berths	5,400
TUI Cruises - Mein Schiff 3
Commitments and Contingencies
Approximate Berths	2,500
TUI Cruises - Mein Schiff 4
Commitments and Contingencies
Approximate Berths	2,500
Anthem of the Seas facility
Commitments and Contingencies
Approximate Berths	4,150
TUI Cruises
Commitments and Contingencies
Percentage of ownership interest	50.00%
Number of ships on order	5
Quantum of the Seas facility
Commitments and Contingencies
Approximate Berths	4,150
Cruise ships on order
Commitments and Contingencies
Aggregate cost of ships expected to enter service	3,500,000,000
Deposit for the purchase of ships expected to enter service	$ 202,900,000
Percentage of aggregate cost exposed to fluctuations in the euro exchange rate	46.70%