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General (Details) destination in Thousands, $ in Millions | Jul. 31, 2018 USD ($) | Dec. 31, 2019 ship continent brand destination
--- | --- | ---
Schedule of Equity Method Investments [Line Items] |  |
Number of cruise brands | brand |  | 4
Number of ships in operation | ship |  | 61
Number of destinations | destination |  | 1
Minimum |  |
Schedule of Equity Method Investments [Line Items] |  |
Investment in a joint venture, percentage of interest |  | 20.00%
Maximum |  |
Schedule of Equity Method Investments [Line Items] |  |
Investment in a joint venture, percentage of interest |  | 50.00%
TUI Cruises |  |
Schedule of Equity Method Investments [Line Items] |  |
Investment in a joint venture, percentage of interest |  | 50.00%
Pullmantur |  |
Schedule of Equity Method Investments [Line Items] |  |
Investment in a joint venture, percentage of interest |  | 49.00%
Silversea Cruises |  |
Schedule of Equity Method Investments [Line Items] |  |
Number of continents | continent |  | 7
Percentage of business acquired | 66.70% |
Payments to acquire business | $ | $ 1,020 |

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