Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (715,243)	$ 240,190	$ (2,596,215)	$ 358,347
Other comprehensive income (loss):
Shipboard Retirement Plan	102	94	204	189
Cash flow hedges:
Net unrealized gain (loss)	54,478	(17,189)	(251,382)	(2,037)
Amount realized and reclassified into earnings	28,782	(9,274)	50,781	(16,274)
Total other comprehensive income (loss)	83,362	(26,369)	(200,397)	(18,122)
Total comprehensive income (loss)	$ (631,881)	$ 213,821	$ (2,796,612)	$ 340,225