Fair Value Measurements and Derivative Instruments (Non-Derivative Instruments) (Details) - Foreign currency debt € in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2023 EUR (€)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 EUR (€)	Dec. 31, 2022 USD ($)
Net investment hedge
Carrying Value of Non-derivative instrument Designated as hedging instrument		$ 588		$ 462
Pullmantur and TUI Cruises
Net investment hedge
Carrying Value of Non-derivative instrument Designated as hedging instrument	€ 648	$ 716	€ 433	$ 462