Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Total revenues		$ 3,186,850	$ 2,796,187	$ 8,433,248	$ 7,161,548
Cruise Itinerary
Disaggregation of Revenue [Line Items]
Total revenues		3,052,116	2,683,393	8,084,498	6,887,211
Cruise Itinerary | North America
Disaggregation of Revenue [Line Items]
Total revenues	[1]	1,617,446	1,450,119	4,870,273	4,061,545
Cruise Itinerary | Asia Pacific
Disaggregation of Revenue [Line Items]
Total revenues	[2]	272,062	235,374	1,089,914	1,051,551
Cruise Itinerary | Europe
Disaggregation of Revenue [Line Items]
Total revenues	[3]	1,060,424	968,952	1,663,118	1,566,351
Cruise Itinerary | Other regions
Disaggregation of Revenue [Line Items]
Total revenues	[4]	102,184	28,948	461,193	207,764
Other Revenues
Disaggregation of Revenue [Line Items]
Total revenues	[5]	$ 134,734	$ 112,794	$ 348,750	$ 274,337
Passenger Ticket | Other regions
Disaggregation of Revenue [Line Items]
Percentage of revenues by country	[6]	26.00%	28.00%	26.00%	30.00%
Passenger Ticket | United States
Disaggregation of Revenue [Line Items]
Percentage of revenues by country		62.00%	59.00%	65.00%	60.00%
Passenger Ticket | United Kingdom
Disaggregation of Revenue [Line Items]
Percentage of revenues by country		12.00%	13.00%	9.00%	10.00%

[1] Includes the United States, Canada, Mexico and the Caribbean.

[2] Includes Southeast Asia (e.g., Singapore, Thailand and the Philippines), East Asia (e.g., China and Japan), South Asia (e.g., India and Pakistan) and Oceania (e.g., Australia and Fiji Islands) regions.

[3] Includes European countries (e.g., Nordics, Germany, France, Italy, Spain and the United Kingdom).

[4] Includes itineraries primarily in South and Latin American countries.

[5] Includes revenues primarily related to cancellation fees, vacation protection insurance, pre- and post-cruise tours and fees for operating certain port facilities. Amounts also include revenues related to our bareboat charter, procurement and management related services we perform on behalf of our unconsolidated affiliates. Refer to Note 7. Other Assets for more information on our unconsolidated affiliates.

[6] No other individual country's revenue exceeded 10% for the quarters and nine months ended September 30, 2019 and 2018.