Commitments and Contingencies	6 Months Ended
Jun. 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 June 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 June 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. As of June 30, 2018, the aggregate cost of our ships on order, not including any ships on order by our Partner Brands, was approximately $11.4 billion, of which we had deposited $586.1 million. Approximately 54.3% of the aggregate cost was exposed to fluctuations in the Euro exchange rate at June 30, 2018. Refer to Note 10. Fair Value Measurements and Derivative Instruments for further information. Litigation We are routinely involved in 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 June 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 June 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.

As of June 30, 2018, the aggregate cost of our ships on order, not including any ships on order by our Partner Brands, was approximately $11.4 billion, of which we had deposited $586.1 million. Approximately 54.3% of the aggregate cost was exposed to fluctuations in the Euro exchange rate at June 30, 2018. Refer to Note 10. Fair Value Measurements and Derivative Instruments for further information.

Litigation

We are routinely involved in 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.