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Redeemable Noncontrolling Interest - Narrative (Details) - USD ($) $ in Millions | Mar. 31, 2019 | Jul. 31, 2018
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Royal Caribbean International | Silversea Cruises Group |  |
Redeemable Noncontrolling Interest [Line Items] |  |
Ownership percentage by noncontrolling owners | 33.30% |
Silversea Cruises |  |
Redeemable Noncontrolling Interest [Line Items] |  |
Redeemable noncontrolling interest |  | $ 537.8
Percentage of business acquired |  | 66.70%

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