Long-Term Debt (Details)		9 Months Ended		1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended
	Jan. 31, 2014 Unsecured Term Loan Due in August 2018 USD ($)	Sep. 30, 2014 Unsecured Term Loan Due in August 2018 LIBOR	Jan. 31, 2014 Unsecured term loan due July 2017 EUR (€)	Jan. 31, 2014 Unsecured term loan due July 2017 EURIBOR	Dec. 31, 2013 Unsecured term loan due July 2017 EURIBOR	Mar. 31, 2014 Oasis of the Seas term loan USD ($)	Mar. 31, 2014 Oasis of the Seas term loan LIBOR	Dec. 31, 2013 Oasis of the Seas term loan LIBOR	Mar. 31, 2014 Allure of the Seas term loan USD ($)	Mar. 31, 2014 Allure of the Seas term loan LIBOR	Dec. 31, 2013 Allure of the Seas term loan LIBOR	Jan. 31, 2014 Senior Notes Unsecured 5.625% Senior Notes Due 2014 EUR (€)
Long-Term Debt
Long term debt, principal amount	$ 380,000,000.0		€ 365,000,000.0			$ 420,000,000.0			$ 1,100,000,000.0			€ 745,000,000.0
Margin on floating rate base (as a percent)		2.12%		2.30%	3.00%		1.85%	2.10%		1.85%	2.10%
Long term debt, interest rate												5.625%