General	6 Months Ended
Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General	General Description of Business We are a global cruise company. As of June 30, 2018, we own and operate three global cruise brands: Royal Caribbean International, Celebrity Cruises and Azamara Club Cruises (collectively, our "Global Brands"). We also own a 50% joint venture interest in the German brand TUI Cruises, a 49% interest in the Spanish brand Pullmantur and a 36% interest in the Chinese brand SkySea Cruises (collectively, our "Partner Brands"). We account for our investments in our Partner Brands under the equity method of accounting. In March 2018, we and Ctrip.com International Ltd. ("Ctrip") announced the decision to end the Skysea Holding International Ltd. ("Skysea Holding") venture. Skysea Holding expects to cease business operations by the end of 2018. The Golden Era, the ship operated by SkySea Cruises and owned by a wholly owned subsidiary of Skysea Holding, is expected to be sold to an affiliate of TUI AG, our joint venture partner in TUI Cruises, and is expected to be delivered in December 2018. Refer to Note 5. Other Assets for further information regarding our investment in SkySea Holding. On July 31, 2018, we acquired a 66.7% equity stake in Silversea Cruises Holding Ltd. ("Silversea Cruises"), a privately-owned ultra-luxury cruise line with nine ships operating in all seven continents, for approximately $1.0 billion. Refer to Note 6. Long-Term Debt for information on debt issued to finance a portion of the acquisition. In addition to the purchase price, Manfredi Lefebvre D'Ovidio, Executive Chairman of Silversea Cruises, will qualify for contingent consideration of approximately 472,000 shares of our common stock, payable upon achievement of certain 2019-2020 performance metrics. For reporting purposes, we will account for this transaction under the provisions of Accounting Standard Codification ("ASC") 805, Business Combinations, and we expect to include Silversea Cruises’ results of operations on a three-month reporting lag beginning with the fourth quarter of 2018. During the subsequent measurement period, we expect to receive additional information to perform the purchase price allocation. Basis for Preparation of Consolidated Financial Statements The unaudited consolidated financial statements are presented pursuant to the rules and regulations of the Securities and Exchange Commission. In our opinion, these statements include all adjustments necessary for a fair statement of the results of the interim periods reported herein. Adjustments consist only of normal recurring items, except for any discussed in the notes below. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted as permitted by such rules and regulations. Estimates are required for the preparation of financial statements in accordance with GAAP and actual results could differ from these estimates. Refer to Note 2. Summary of Significant Accounting Policies in this Quarterly Report on Form 10-Q and in our Annual Report on Form 10-K for the year ended December 31, 2017 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 5. Other Assets for further information regarding our variable interest entities. 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.

General

Description of Business

We are a global cruise company. As of June 30, 2018, we own and operate three global cruise brands: Royal Caribbean International, Celebrity Cruises and Azamara Club Cruises (collectively, our "Global Brands"). We also own a 50% joint venture interest in the German brand TUI Cruises, a 49% interest in the Spanish brand Pullmantur and a 36% interest in the Chinese brand SkySea Cruises (collectively, our "Partner Brands"). We account for our investments in our Partner Brands under the equity method of accounting.

In March 2018, we and Ctrip.com International Ltd. ("Ctrip") announced the decision to end the Skysea Holding International Ltd. ("Skysea Holding") venture. Skysea Holding expects to cease business operations by the end of 2018. The Golden Era, the ship operated by SkySea Cruises and owned by a wholly owned subsidiary of Skysea Holding, is expected to be sold to an affiliate of TUI AG, our joint venture partner in TUI Cruises, and is expected to be delivered in December 2018. Refer to Note 5. Other Assets for further information regarding our investment in SkySea Holding.

On July 31, 2018, we acquired a 66.7% equity stake in Silversea Cruises Holding Ltd. ("Silversea Cruises"), a privately-owned ultra-luxury cruise line with nine ships operating in all seven continents, for approximately $1.0 billion. Refer to Note 6. Long-Term Debt for information on debt issued to finance a portion of the acquisition. In addition to the purchase price, Manfredi Lefebvre D'Ovidio, Executive Chairman of Silversea Cruises, will qualify for contingent consideration of approximately 472,000 shares of our common stock, payable upon achievement of certain 2019-2020 performance metrics. For reporting purposes, we will account for this transaction under the provisions of Accounting Standard Codification ("ASC") 805, Business Combinations, and we expect to include Silversea Cruises’ results of operations on a three-month reporting lag beginning with the fourth quarter of 2018. During the subsequent measurement period, we expect to receive additional information to perform the purchase price allocation.

Basis for Preparation of Consolidated Financial Statements

The unaudited consolidated financial statements are presented pursuant to the rules and regulations of the Securities and

Exchange Commission. In our opinion, these statements include all adjustments necessary for a fair statement of the results of the interim periods reported herein. Adjustments consist only of normal recurring items, except for any discussed in the notes below. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted as permitted by such rules and regulations. Estimates are required for the preparation of financial statements in accordance with GAAP and actual results could differ from these estimates. Refer to Note 2. Summary of Significant Accounting Policies in this Quarterly Report on Form 10-Q and in our Annual Report on Form 10-K for the year ended December 31, 2017 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 5. Other Assets for further information regarding our variable interest entities. 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.