General (Details) destination in Thousands, $ in Millions		12 Months Ended
		Dec. 31, 2023 USD ($) destination country brand continent ship	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Mar. 19, 2021 USD ($) ship
Schedule of Equity Method Investments [Line Items]
Number of cruise brands | brand		3
Number of ships in operation | ship		64
Number of destinations | destination		1
Number of countries | country		120
Number of continents | continent		7
Other (expense) income	[1]	$ (8.0)	$ (119.0)	$ 20.0
Elimination of Silversea Reporting Lag
Schedule of Equity Method Investments [Line Items]
Other (expense) income				$ (62.6)
Azamara | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Schedule of Equity Method Investments [Line Items]
Number of ships disposed | ship					3
Proceeds from disposal					$ 201.0
TUI Cruises
Schedule of Equity Method Investments [Line Items]
Investment in a joint venture, percentage of interest		50.00%

[1] Including a $62.6 million net loss related to the 2021 elimination of the Silversea Cruises reporting lag for the year ended December 31, 2021.