General	12 Months Ended
Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General	General Description of Business We are a global cruise company. We own and operate four global cruise brands: Royal Caribbean International, Celebrity Cruises, Azamara Club Cruises and, most recently, Silversea Cruises (collectively, our "Global Brands"). We also own a 50% joint venture interest in the German brand TUI Cruises and a 49% interest in the Spanish brand Pullmantur (collectively, our "Partner Brands"). We account for our investments in our Partner Brands under the equity method of accounting. Together, our Global Brands and our Partner Brands operate a combined 60 ships as of December 31, 2018. Our ships operate on a selection of worldwide itineraries that call on more than 1,000 destinations on all seven continents. On July 31, 2018, we acquired a 66.7% equity stake in Silversea Cruise Holding Ltd. ("Silversea Cruises"), an ultra-luxury and expedition cruise line with nine ships, from Silversea Cruises Group Ltd. ("SCG") for $1.02 billion in cash and contingent consideration. Refer to Note 3. Business Combination for further information on the Silversea Cruises acquisition. In March 2018, we and Ctrip.com International Ltd. ("Ctrip") announced the decision to end the Skysea Holding International Ltd. ("Skysea Holding") venture in which we have a 36% ownership interest. Skysea Holding ceased cruising operations in September 2018, and in December 2018, the Golden Era, the ship operated by SkySea Cruises, and owned by a wholly-owned subsidiary of Skysea Holding, was sold to an affiliate of TUI AG, our joint venture partner in TUI Cruises. Refer to Note 8. Other Assets for further information regarding our investment in SkySea Holding. Basis for Preparation of Consolidated Financial Statements The consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP"). Estimates are required for the preparation of financial statements in accordance with these principles. Actual results could differ from these estimates. Refer to Note 2. Summary of Significant Accounting Policies for a discussion of our significant accounting policies. All significant intercompany accounts and transactions are eliminated in consolidation. We consolidate entities over which we have control, usually evidenced by a direct ownership interest of greater than 50%, and variable interest entities where we are determined to be the primary beneficiary. Refer to Note 8. Other Assets for further information regarding our variable interest entities. We consolidate the operating results of Silversea Cruises on a three-month reporting lag to allow for more timely preparation of our consolidated financial statements. No material events or other transactions involving Silversea Cruises have occurred from September 30, 2018 through December 31, 2018 that would require further disclosure or adjustment to our consolidated financial statements as of and for the year ended December 31, 2018. For affiliates we do not control but over which we have significant influence on financial and operating policies, usually evidenced by a direct ownership interest from 20% to 50%, the investment is accounted for using the equity method. Effective July 31, 2016, we sold 51% of our interest in Pullmantur Holdings, the parent company of the Pullmantur brand. We retained a 49% interest in Pullmantur Holdings as well as full ownership of the four vessels currently operated by the Pullmantur brand under bareboat charter arrangements. Prior to January 1, 2016, we consolidated the operating results of Pullmantur Holdings on a two-month reporting lag to allow for more timely preparation of our consolidated financial statements. Effective January 1, 2016, we eliminated the two-month reporting lag to reflect Pullmantur Holdings' financial position, results of operations and cash flows concurrently and consistently with the fiscal calendar of the Company ("elimination of the Pullmantur reporting lag") and accounted for this change in accounting principle in our consolidated results for the year ended December 31, 2016. The impact of the elimination of the reporting lag was immaterial for our fiscal year ended December 31, 2016. Accordingly, the results of Pullmantur Holdings for November and December 2015 were included in our statement of comprehensive income (loss) for the year ended December 31, 2016. The effect of this change was a decrease to net income of $21.7 million, which has been reported within Other income (expense) in our consolidated statements of comprehensive income (loss) for the year ended December 31, 2016.

General

Description of Business

We are a global cruise company. We own and operate four global cruise brands: Royal Caribbean International, Celebrity Cruises, Azamara Club Cruises and, most recently, Silversea Cruises (collectively, our "Global Brands"). We also own a 50% joint venture interest in the German brand TUI Cruises and a 49% interest in the Spanish brand Pullmantur (collectively, our "Partner Brands"). We account for our investments in our Partner Brands under the equity method of accounting. Together, our Global Brands and our Partner Brands operate a combined 60 ships as of December 31, 2018. Our ships operate on a selection of worldwide itineraries that call on more than 1,000 destinations on all seven continents.

On July 31, 2018, we acquired a 66.7% equity stake in Silversea Cruise Holding Ltd. ("Silversea Cruises"), an ultra-luxury and expedition cruise line with nine ships, from Silversea Cruises Group Ltd. ("SCG") for $1.02 billion in cash and contingent consideration. Refer to Note 3. Business Combination for further information on the Silversea Cruises acquisition.

In March 2018, we and Ctrip.com International Ltd. ("Ctrip") announced the decision to end the Skysea Holding International Ltd. ("Skysea Holding") venture in which we have a 36% ownership interest. Skysea Holding ceased cruising operations in September 2018, and in December 2018, the Golden Era, the ship operated by SkySea Cruises, and owned by a wholly-owned subsidiary of Skysea Holding, was sold to an affiliate of TUI AG, our joint venture partner in TUI Cruises. Refer to Note 8. Other Assets for further information regarding our investment in SkySea Holding.

Basis for Preparation of Consolidated Financial Statements

The consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP"). Estimates are required for the preparation of financial statements in accordance with these principles. Actual results could differ from these estimates. Refer to Note 2. Summary of Significant Accounting Policies for a discussion of our significant accounting policies.

All significant intercompany accounts and transactions are eliminated in consolidation. We consolidate entities over which we have control, usually evidenced by a direct ownership interest of greater than 50%, and variable interest entities where we are determined to be the primary beneficiary. Refer to Note 8. Other Assets for further information regarding our variable interest entities. We consolidate the operating results of Silversea Cruises on a three-month reporting lag to allow for more timely preparation of our consolidated financial statements. No material events or other transactions involving Silversea Cruises have occurred from September 30, 2018 through December 31, 2018 that would require further disclosure or adjustment to our consolidated financial statements as of and for the year ended December 31, 2018. For affiliates we do not control but over which we have significant influence on financial and operating policies, usually evidenced by a direct ownership interest from 20% to 50%, the investment is accounted for using the equity method.

Effective July 31, 2016, we sold 51% of our interest in Pullmantur Holdings, the parent company of the Pullmantur brand. We retained a 49% interest in Pullmantur Holdings as well as full ownership of the four vessels currently operated by the Pullmantur brand under bareboat charter arrangements. Prior to January 1, 2016, we consolidated the operating results of Pullmantur Holdings on a two-month reporting lag to allow for more timely preparation of our consolidated financial statements. Effective January 1, 2016, we eliminated the two-month reporting lag to reflect Pullmantur Holdings' financial position, results of operations and cash flows concurrently and consistently with the fiscal calendar of the Company ("elimination of the Pullmantur reporting lag") and accounted for this change in accounting principle in our consolidated results for the year ended December 31, 2016. The impact of the elimination of the reporting lag was immaterial for our fiscal year ended December 31, 2016. Accordingly, the results of Pullmantur Holdings for November and December 2015 were included in our statement of comprehensive income (loss) for the year ended December 31, 2016. The effect of this change was a decrease to net income of $21.7 million, which has been reported within Other income (expense) in our consolidated statements of comprehensive income (loss) for the year ended December 31, 2016.