Changes in Accumulated Other Comprehensive Income (Loss) - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Reclassifications out of accumulated other comprehensive loss
Amount of gain recognized in income on derivatives for the period ended June 30, 2020			$ 3,273
Other operating expenses	$ 680,420	$ 1,544,504	2,191,239	$ 2,958,208
Pullmantur Holdings
Reclassifications out of accumulated other comprehensive loss
Other expense	69,000		69,000
Deferred currency translation loss	92,600		92,600
Amount of gain recognized in income on derivatives for the period ended June 30, 2020	23,600		23,600
Other operating
Reclassifications out of accumulated other comprehensive loss
Other operating expenses	279,465	348,801	703,463	694,943
Other operating | Reclassification out of Accumulated Other Comprehensive Income [Member] | Foreign currency translation adjustments
Reclassifications out of accumulated other comprehensive loss
Other operating expenses	$ 34,300	$ 0	34,300	$ 0
Other operating | Reclassification out of Accumulated Other Comprehensive Income [Member] | Foreign currency translation adjustments | Pullmantur Holdings
Reclassifications out of accumulated other comprehensive loss
Other operating expenses			$ 34,300