Long-Term Debt	9 Months Ended
Sep. 30, 2016
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt In February 2016, we amended our unsecured term loans for Oasis of the Seas and Allure of the Seas to reduce the margins on those facilities and incorporate certain covenant improvements included in our more recent credit facilities. The interest rate on both the $420.0 million floating rate tranche of the Oasis of the Seas term loan and the $1.1 billion Allure of the Seas term loan was reduced from LIBOR plus 1.85% to LIBOR plus 1.65%. These amendments did not result in the extinguishment of debt. In February 2016, we agreed with the lenders on our €365.0 million unsecured term loan due 2017 to convert €247.5 million, or $273.2 million, of the outstanding principal balance from Euro to US dollars. Interest on the new US dollar tranche accrues at a floating rate based on LIBOR plus the applicable margin. The balance of the facility of €117.5 million will remain outstanding in Euro and will continue to accrue interest at a floating rate based on EURIBOR, subject to a 0% floor, plus the applicable margin. The applicable margin varies with our debt rating and was 1.75% as of September 30, 2016. The amendment did not result in the extinguishment of debt. In April 2016, we took delivery of Ovation of the Seas. To finance the purchase, we borrowed $841.8 million under a previously committed unsecured term loan which is 95% guaranteed by Euler Hermes Deutschland AG ("Hermes"), the official export credit agency of Germany. The loan amortizes semi-annually over 12 years and bears interest at LIBOR plus a margin of 1.00%, totaling 1.91% as of September 30, 2016. During 2015, we entered into forward-starting interest rate swap agreements which effectively converted $830.0 million of the loan from the floating rate available to us per the credit agreement to a fixed rate, including the applicable margin, of 3.16% effective from April 2016 through the maturity of the loan. See Note 10. Fair Value Measurements and Derivative Instruments for further information regarding these agreements. In April 2016, we entered into and drew in full on a credit agreement which provides an unsecured term loan in the amount of $200 million. The loan is due and payable at maturity in April 2017. Interest on the loan accrues at a floating rate based on LIBOR plus a margin of 1.30%, totaling 1.82% as of September 30, 2016. The proceeds from this loan were used to repay amounts outstanding under our unsecured revolving credit facilities. In May 2016, we took delivery of Harmony of the Seas. To finance the purchase, we borrowed an unsecured Euro-denominated term loan in the amount of €700.7 million, or $787.2 million based on the exchange rate at September 30, 2016, and an unsecured US dollar-denominated term loan in the amount of $226.1 million under previously committed credit agreements. Both of the facilities are 100% guaranteed by Compagnie Francaise d’Assurance pour le Commerce Extérieur (“COFACE”), the official export credit agency of France. The Euro-denominated term loan amortizes semi-annually over 12 years and bears interest at EURIBOR, subject to a 0% floor, plus the applicable margin of 1.15%, totaling 1.15% as of September 30, 2016. The US dollar-denominated term loan amortizes semi-annually over 12 years and bears interest at a fixed rate of 2.53%. During 2015, we entered into forward-starting interest rate swap agreements which effectively converted €693.4 million, or $779.0 million based on the exchange rate at September 30, 2016, of the Euro-denominated term loan from the floating rate per the credit agreement to a fixed rate, including the applicable margin, of 2.26% effective from May 2016 through the maturity of the loan. See Note 10. Fair Value Measurements and Derivative Instruments for further information regarding these agreements.

Long-Term Debt

In February 2016, we amended our unsecured term loans for Oasis of the Seas and Allure of the Seas to reduce the margins on those facilities and incorporate certain covenant improvements included in our more recent credit facilities. The interest rate on both the $420.0 million floating rate tranche of the Oasis of the Seas term loan and the $1.1 billion Allure of the Seas term loan was reduced from LIBOR plus 1.85% to LIBOR plus 1.65%. These amendments did not result in the extinguishment of debt.

In February 2016, we agreed with the lenders on our €365.0 million unsecured term loan due 2017 to convert €247.5 million, or $273.2 million, of the outstanding principal balance from Euro to US dollars. Interest on the new US dollar tranche accrues at a floating rate based on LIBOR plus the applicable margin. The balance of the facility of €117.5 million will remain outstanding in Euro and will continue to accrue interest at a floating rate based on EURIBOR, subject to a 0% floor, plus the applicable margin. The applicable margin varies with our debt rating and was 1.75% as of September 30, 2016. The amendment did not result in the extinguishment of debt.

In April 2016, we took delivery of Ovation of the Seas. To finance the purchase, we borrowed $841.8 million under a previously committed unsecured term loan which is 95% guaranteed by Euler Hermes Deutschland AG ("Hermes"), the official export credit agency of Germany. The loan amortizes semi-annually over 12 years and bears interest at LIBOR plus a margin of 1.00%, totaling 1.91% as of September 30, 2016. During 2015, we entered into forward-starting interest rate swap agreements which effectively converted $830.0 million of the loan from the floating rate available to us per the credit agreement to a fixed rate, including the applicable margin, of 3.16% effective from April 2016 through the maturity of the loan. See Note 10. Fair Value Measurements and Derivative Instruments for further information regarding these agreements.

In April 2016, we entered into and drew in full on a credit agreement which provides an unsecured term loan in the amount of $200 million. The loan is due and payable at maturity in April 2017. Interest on the loan accrues at a floating rate based on LIBOR plus a margin of 1.30%, totaling 1.82% as of September 30, 2016. The proceeds from this loan were used to repay amounts outstanding under our unsecured revolving credit facilities.

In May 2016, we took delivery of Harmony of the Seas. To finance the purchase, we borrowed an unsecured Euro-denominated term loan in the amount of €700.7 million, or $787.2 million based on the exchange rate at September 30, 2016, and an unsecured US dollar-denominated term loan in the amount of $226.1 million under previously committed credit agreements. Both of the facilities are 100% guaranteed by Compagnie Francaise d’Assurance pour le Commerce Extérieur (“COFACE”), the official export credit agency of France. The Euro-denominated term loan amortizes semi-annually over 12 years and bears interest at EURIBOR, subject to a 0% floor, plus the applicable margin of 1.15%, totaling 1.15% as of September 30, 2016. The US dollar-denominated term loan amortizes semi-annually over 12 years and bears interest at a fixed rate of 2.53%. During 2015, we entered into forward-starting interest rate swap agreements which effectively converted €693.4 million, or $779.0 million based on the exchange rate at September 30, 2016, of the Euro-denominated term loan from the floating rate per the credit agreement to a fixed rate, including the applicable margin, of 2.26% effective from May 2016 through the maturity of the loan. See Note 10. Fair Value Measurements and Derivative Instruments for further information regarding these agreements.