Long Term Debt (Parenthetical) (Detail) In Millions, unless otherwise specified	12 Months Ended		12 Months Ended		12 Months Ended												12 Months Ended		12 Months Ended						12 Months Ended		12 Months Ended						12 Months Ended		12 Months Ended				12 Months Ended		12 Months Ended		12 Months Ended				12 Months Ended			12 Months Ended
	Dec. 31, 2011 Unsecured revolving credit facility LIBOR plus 2.00% due 2016 USD ($)	Dec. 31, 2010 Unsecured revolving credit facility LIBOR plus 2.00% due 2016 USD ($)	Dec. 31, 2011 Unsecured revolving credit facility LIBOR plus 2.75% due 2014 USD ($)	Dec. 31, 2010 Unsecured revolving credit facility LIBOR plus 2.75% due 2014 USD ($)	Dec. 31, 2011 Unsecured senior notes and senior debentures, 6.88% to 11.88%, due 2013 through 2016, 2018 and 2027	Dec. 31, 2010 Unsecured senior notes and senior debentures, 6.88% to 11.88%, due 2013 through 2016, 2018 and 2027	Dec. 31, 2011 Unsecured senior notes and senior debentures, 6.88% to 11.88%, due 2013 through 2016, 2018 and 2027 Lower Limit	Dec. 31, 2010 Unsecured senior notes and senior debentures, 6.88% to 11.88%, due 2013 through 2016, 2018 and 2027 Lower Limit	Dec. 31, 2011 Unsecured senior notes and senior debentures, 6.88% to 11.88%, due 2013 through 2016, 2018 and 2027 Upper Limit Period 1	Dec. 31, 2010 Unsecured senior notes and senior debentures, 6.88% to 11.88%, due 2013 through 2016, 2018 and 2027 Upper Limit Period 1	Dec. 31, 2011 Unsecured senior notes and senior debentures, 6.88% to 11.88%, due 2013 through 2016, 2018 and 2027 Upper Limit Period 2	Dec. 31, 2010 Unsecured senior notes and senior debentures, 6.88% to 11.88%, due 2013 through 2016, 2018 and 2027 Upper Limit Period 2	Dec. 31, 2011 Unsecured senior notes and senior debentures, 6.88% to 11.88%, due 2013 through 2016, 2018 and 2027 Upper Limit Period 3	Dec. 31, 2010 Unsecured senior notes and senior debentures, 6.88% to 11.88%, due 2013 through 2016, 2018 and 2027 Upper Limit Period 3	Dec. 31, 2011 Unsecured senior notes 5.63% due 2014 EUR (€)	Dec. 31, 2010 Unsecured senior notes 5.63% due 2014 EUR (€)	Dec. 31, 2011 Unsecured term loan LIBOR plus 2.75% due 2013	Dec. 31, 2010 Unsecured term loan LIBOR plus 2.75% due 2013	Dec. 31, 2011 Unsecured term loan LIBOR plus 1.25% due through 2012 USD ($)	Dec. 31, 2010 Unsecured term loan LIBOR plus 1.25% due through 2012 USD ($)	Dec. 31, 2011 Unsecured term loan 4.20% due through 2013 USD ($)	Dec. 31, 2010 Unsecured term loan 4.20% due through 2013 USD ($)	Dec. 31, 2011 Unsecured term loan 4.64% due through 2014 USD ($)	Dec. 31, 2010 Unsecured term loan 4.64% due through 2014 USD ($)	Dec. 31, 2011 Unsecured term loan LIBOR plus 0.62% due through 2015 USD ($)	Dec. 31, 2010 Unsecured term loan LIBOR plus 0.62% due through 2015 USD ($)	Dec. 31, 2011 Unsecured term loan LIBOR plus 0.45% due through 2020 USD ($)	Dec. 31, 2010 Unsecured term loan LIBOR plus 0.45% due through 2020 USD ($)	Dec. 31, 2011 Unsecured term loan 5.41%, due through 2021 USD ($)		Dec. 31, 2010 Unsecured term loan 5.41%, due through 2021 USD ($)		Dec. 31, 2011 Unsecured term loan LIBOR plus 2.10% due through 2021 USD ($)	Dec. 31, 2010 Unsecured term loan LIBOR plus 2.10% due through 2021 USD ($)	Dec. 31, 2011 Unsecured term loan EURIBOR plus 1.58% due through 2021 EUR (€)		Dec. 31, 2010 Unsecured term loan EURIBOR plus 1.58% due through 2021 EUR (€)		Dec. 31, 2011 Unsecured term loan LIBOR plus 0.50% due through 2021 USD ($)	Dec. 31, 2010 Unsecured term loan LIBOR plus 0.50% due through 2021 USD ($)	Dec. 31, 2011 Unsecured term loan LIBOR plus 0.37% due through 2022 USD ($)	Dec. 31, 2010 Unsecured term loan LIBOR plus 0.37% due through 2022 USD ($)	Dec. 31, 2011 Unsecured term loan LIBOR plus 2.10% due through 2022 USD ($)		Dec. 31, 2010 Unsecured term loan LIBOR plus 2.10% due through 2022		Dec. 31, 2011 Unsecured term loan LIBOR plus 0.40% due through 2023 USD ($)	Dec. 31, 2011 Unsecured term loan LIBOR plus 2.5% due through 2023 USD ($)	Dec. 31, 2010 Unsecured term loan 7.0% due through 2022	Dec. 31, 2011 Unsecured term loan LIBOR plus 3.75% due through 2021 USD ($)	Dec. 31, 2010 Unsecured term loan LIBOR plus 3.75% due through 2020	Dec. 31, 2011 Unsecured Term Loan Facility USD ($)	Dec. 31, 2011 Unsecured Term Loan Facility Oasis of the Seas	Dec. 31, 2011 Unsecured Term Loan Facility Allure Of The Seas
Debt Instrument [Line Items]
Long term debt, principal amount	$ 875.0	$ 875.0	$ 525.0	$ 525.0											€ 1,000.0	€ 1,000.0			$ 225.0	$ 225.0	$ 570.0	$ 570.0	$ 589.0	$ 589.0	$ 530.0	$ 530.0	$ 519.0	$ 519.0	$ 420.0	[1]	$ 420.0	[1]	$ 420.0	$ 420.0	€ 159.4	[1]	€ 159.4	[1]	$ 524.5	$ 524.5	$ 566.1	$ 566.1	$ 1,100.0	[2]			$ 632.0	$ 7.3		$ 30.3		$ 100.0
Long term debt, current rate	2.28%		3.04%														3.05%		1.55%						1.21%		1.05%						2.71%		3.37%	[1]			0.92%		0.96%		2.71%	[2]			0.81%	2.96%		4.29%
Long term debt, stated interest rate															5.63%	5.63%					4.20%	4.20%	4.64%	4.64%					5.41%	[1]	5.41%	[1]																	7.00%
Long term debt, facility fee	0.42%	0.42%	0.6875%	0.6875%
Long term debt, variable rate	2.00%	2.00%	2.75%														2.75%		1.25%	1.25%					0.62%	0.62%	0.45%	0.45%					2.10%		1.58%	[1]			0.50%	0.50%	0.37%	0.37%	2.10%	[2]			0.40%	2.50%		3.75%	3.75%
Long term debt, due date (year)	2016	2016	2014	2014			2013	2013	2016	2016	2018	2018	2027	2027	2014	2014	2013	2013	2012	2012	2013	2013	2014	2014	2015	2015	2020	2020	2021	[1]	2021	[1]	2021	2021	2021	[1]	2021	[1]	2021	2021	2022	2022	2022	[2]	2022	[2]	2023	2023	2022	2021	2020
Long term debt, minimum stated interest rate					6.88%	6.88%
Long term debt, maximum stated interest rate					11.88%	11.88%
Percentage of financing, lenders ability to exit facility on sixth anniversary																																																					60.00%
Percentage of financing, lenders ability to exit facility on seventh anniversary																																																						100.00%

[1] Corresponds to Oasis of the Seas unsecured term loan. With respect to 60% of the financing, the lenders have the ability to exit the facility on the sixth anniversary of the loan.

[2] Corresponds to Allure of the Seas unsecured term loan. With respect to 100% of the financing, the lenders have the ability to exit the facility on the seventh anniversary of the loan.