Commitments and Contingencies - Leases (Details) (Brilliance of the Seas) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended				9 Months Ended
	Jul. 31, 2002	Sep. 30, 2014 USD ($)	Sep. 30, 2014 GBP (£)	Sep. 30, 2013 USD ($)	Sep. 30, 2013 GBP (£)	Sep. 30, 2014 USD ($)	Sep. 30, 2014 GBP (£)	Sep. 30, 2013 USD ($)	Sep. 30, 2013 GBP (£)
Commitments and Contingencies
Operating lease		$ 5.1	£ 3.1	$ 4.8	£ 3.1	$ 15.4	£ 9.3	$ 14.1	£ 9.2
Initial lease expiration period	25 years
Optional lease cancellation period	18 years
Minimum period of prior notice to cancel lease	1 year
Future payment if lease terminated		$ 101.5	£ 62.6