Other Assets - Share of Equity Income From Investments (Details) € in Millions		3 Months Ended			6 Months Ended
		Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2019 EUR (€)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2019 EUR (€)
Schedule of Investments [Line Items]
Share of equity (loss) income from investments		$ (51,853,000)	$ 33,045,000		$ (62,245,000)	$ 66,739,000
Dividends received	[1]	0	38,137,000		1,991,000	80,572,000
TUI Cruises
Schedule of Investments [Line Items]
Dividends received		$ 0	$ 45,600,000	€ 40.0	$ 0	$ 101,800,000	€ 90.0

[1] There were no dividends received from TUIC for the quarter and six months ended June 30, 2020. For the quarter ended June 30, 2019, the amount includes dividends from TUIC of €40.0 million, or approximately $45.6 million, based on exchange rate at the time of the transaction. For the six months ended June 30, 2019, amounts include dividends from TUIC of €90 million or approximately $101.8 million based on the exchange rates at the time of the transactions. The amounts included in the table above are net of tax withholding