Property and Equipment (Narrative) (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Jul. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($) ship
Property and Equipment
Capitalized interest cost		$ 64,100	$ 58,800	$ 59,100
Acquisition of property and equipment from assumed debt		$ 277,000	$ 0	0
Impairment losses				635,500
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration]		Impairment and credit losses	Impairment and credit losses
Construction in Progress
Property and Equipment
Long-lived asset impairment		$ 10,200	$ 55,200	91,500
Disposal Group, Held-for-sale, Not Discontinued Operations | Azamara
Property and Equipment
Impairment losses				$ 166,800
Number of ships impaired, held-for-sale | ship				3
Three Pullmantur Ships | Disposal Group, Held-for-sale, Not Discontinued Operations
Property and Equipment
Impairment losses				$ 171,300
Number of ships impaired, held-for-sale | ship				3
Silversea Cruises | Cruise ships on order | Silversea Cruises
Property and Equipment
Acquisition of property and equipment from assumed debt	$ 277,000