Commitments and Contingencies	9 Months Ended
Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Ship Purchase Obligations Our future capital commitments consist primarily of new ship orders. As of September 30, 2018, we had two Quantum-class ships, one Oasis-class ship and two ships of a new generation of ships, known as our Icon-class, on order for our Royal Caribbean International brand with an aggregate capacity of approximately 25,300 berths. Additionally, as of September 30, 2018, we have four ships of a new generation of ships, known as our Edge-class, and a ship designed for the Galapagos Islands on order for our Celebrity Cruises brand with an aggregate capacity of approximately 12,300 berths. Furthermore, as of September 30, 2018, we have two ships on order for our Silversea Cruises brand with an aggregate capacity of approximately 1,100 berths. As of September 30, 2018, the aggregate cost of our ships on order, not including any ships on order by our Partner Brands, was $12.2 billion, of which we had deposited $656.8 million. Approximately 54.3% of the aggregate cost was exposed to fluctuations in the Euro exchange rate at September 30, 2018. Refer to Note 12. Fair Value Measurements and Derivative Instruments for further information. As of September 30, 2018, the total ships on order and their aggregate costs, mentioned above, do not include the ship order placed by Silversea Cruises during the reporting lag period. Litigation On September 24, 2018, a proposed class-action lawsuit was filed by Roger and Maureen Carretta against Royal Caribbean Cruises Ltd. d/b/a Royal Caribbean International in the United States District Court for the Southern District of Florida relating to the marketing and sales of our Travel Protection Program. The plaintiffs purport to represent an alleged class of passengers who purchased the Travel Protection Program. The complaint alleges that the Company concealed that it received “kickbacks,” in the form of undisclosed commissions on the sale of the travel insurance portion of the product from an underwriter, and allegedly improperly bundled Travel Insurance Policies with non-insurance products. The complaint seeks damages in an indeterminate amount. We believe we have meritorious defenses to the claims and that any liability which may arise because of this action will not have a material impact on our consolidated financial statements. We are routinely involved in other claims typical within the cruise vacation industry. The majority of these claims are covered by insurance. We believe the outcome of such claims, net of expected insurance recoveries, will not have a material adverse impact on our financial condition or results of operations and cash flows. Other In July 2016, we executed an agreement with Miami Dade County (“MDC”), which was simultaneously assigned to Sumitomo Banking Corporation (“SMBC”), to lease land from MDC and construct a new cruise terminal at PortMiami in Miami, Florida. The terminal is expected to be approximately 170,000 square feet and will serve as a homeport. During the construction period, SMBC will fund the costs of the terminal’s construction and land lease. Upon completion of the terminal's construction, which is expected to occur during the fourth quarter of 2018, we will operate and lease the terminal from SMBC for a five-year term. We determined that the lease arrangement between SMBC and us should be accounted for as an operating lease upon completion of the terminal. If any person acquires ownership of more than 50% of our common stock or, subject to certain exceptions, during any 24-month period, a majority of our board of directors is no longer comprised of individuals who were members of our board of directors on the first day of such period, we may be obligated to prepay indebtedness outstanding under our credit facilities, which we may be unable to replace on similar terms. Our public debt securities also contain change of control provisions that would be triggered by a third-party acquisition of greater than 50% of our common stock coupled with a ratings downgrade. If this were to occur, it would have an adverse impact on our liquidity and operations.

Commitments and Contingencies

Ship Purchase Obligations

Our future capital commitments consist primarily of new ship orders. As of September 30, 2018, we had two Quantum-class ships, one Oasis-class ship and two ships of a new generation of ships, known as our Icon-class, on order for our Royal Caribbean International brand with an aggregate capacity of approximately 25,300 berths. Additionally, as of September 30, 2018, we have four ships of a new generation of ships, known as our Edge-class, and a ship designed for the Galapagos Islands on order for our Celebrity Cruises brand with an aggregate capacity of approximately 12,300 berths. Furthermore, as of September 30, 2018, we have two ships on order for our Silversea Cruises brand with an aggregate capacity of approximately 1,100 berths.

As of September 30, 2018, the aggregate cost of our ships on order, not including any ships on order by our Partner Brands, was $12.2 billion, of which we had deposited $656.8 million. Approximately 54.3% of the aggregate cost was exposed to fluctuations in the Euro exchange rate at September 30, 2018. Refer to Note 12. Fair Value Measurements and Derivative Instruments for further information.

As of September 30, 2018, the total ships on order and their aggregate costs, mentioned above, do not include the ship order placed by Silversea Cruises during the reporting lag period.

Litigation

On September 24, 2018, a proposed class-action lawsuit was filed by Roger and Maureen Carretta against Royal Caribbean Cruises Ltd. d/b/a Royal Caribbean International in the United States District Court for the Southern District of Florida relating to the marketing and sales of our Travel Protection Program. The plaintiffs purport to represent an alleged class of passengers who purchased the Travel Protection Program. The complaint alleges that the Company concealed that it received “kickbacks,” in the form of undisclosed commissions on the sale of the travel insurance portion of the product from an underwriter, and allegedly improperly bundled Travel Insurance Policies with non-insurance products. The complaint seeks damages in an indeterminate amount. We believe we have meritorious defenses to the claims and that any liability which may arise because of this action will not have a material impact on our consolidated financial statements.

We are routinely involved in other claims typical within the cruise vacation industry. The majority of these claims are covered by insurance. We believe the outcome of such claims, net of expected insurance recoveries, will not have a material adverse impact on our financial condition or results of operations and cash flows.

Other

In July 2016, we executed an agreement with Miami Dade County (“MDC”), which was simultaneously assigned to Sumitomo Banking Corporation (“SMBC”), to lease land from MDC and construct a new cruise terminal at PortMiami in Miami, Florida. The terminal is expected to be approximately 170,000 square feet and will serve as a homeport. During the construction period, SMBC will fund the costs of the terminal’s construction and land lease. Upon completion of the terminal's construction, which is expected to occur during the fourth quarter of 2018, we will operate and lease the terminal from SMBC for a five-year term. We determined that the lease arrangement between SMBC and us should be accounted for as an operating lease upon completion of the terminal.

If any person acquires ownership of more than 50% of our common stock or, subject to certain exceptions, during any 24-month period, a majority of our board of directors is no longer comprised of individuals who were members of our board of directors on the first day of such period, we may be obligated to prepay indebtedness outstanding under our credit facilities, which we may be unable to replace on similar terms. Our public debt securities also contain change of control provisions that would be triggered by a third-party acquisition of greater than 50% of our common stock coupled with a ratings downgrade. If this were to occur, it would have an adverse impact on our liquidity and operations.