CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Total revenues	$ 2,806,631	$ 2,337,605	$ 5,246,398	$ 4,365,361
Cruise operating expenses:
Total cruise operating expenses	1,544,504	1,314,411	2,958,208	2,490,430
Marketing, selling and administrative expenses	376,874	312,923	791,821	650,284
Depreciation and amortization expenses	311,600	253,376	603,885	493,606
Operating Income	573,653	456,895	892,484	731,041
Other income (expense):
Interest income	6,342	13,098	16,126	20,831
Interest expense, net of interest capitalized	(111,304)	(81,864)	(211,719)	(149,742)
Equity investment income	33,045	44,311	66,739	73,063
Other (expense) income	(21,781)	33,855	(26,869)	9,755
Total other income (expense)	(93,698)	9,400	(155,723)	(46,093)
Net Income	479,955	466,295	736,761	684,948
Less: Net Income attributable to noncontrolling interest	7,125	0	14,250	0
Net Income attributable to Royal Caribbean Cruises Ltd.	$ 472,830	$ 466,295	$ 722,511	$ 684,948
Earnings per Share:
Basic (in dollars per share)	$ 2.26	$ 2.20	$ 3.45	$ 3.23
Diluted (in dollars per share)	$ 2.25	$ 2.19	$ 3.44	$ 3.21
Weighted-Average Shares Outstanding:
Basic (in shares)	209,531	211,673	209,427	212,139
Diluted (in shares)	210,052	212,509	209,962	213,079
Other comprehensive income (loss):
Foreign currency translation adjustments	$ 7,263	$ (11,521)	$ 7,827	$ (10,361)
Change in defined benefit plans	(9,722)	(1,964)	(10,375)	5,796
Loss on cash flow derivative hedges	(71,734)	(68,900)	(22,891)	73,630
Total other comprehensive loss	(74,193)	(82,385)	(25,439)	69,065
Comprehensive Income	405,762	383,910	711,322	754,013
Less: Comprehensive Income attributable to noncontrolling interest	7,125	0	14,250	0
Comprehensive Income attributable to Royal Caribbean Cruises Ltd.	398,637	383,910	697,072	754,013
Passenger ticket revenues
Total revenues	2,017,836	1,672,570	3,727,820	3,098,214
Onboard and other revenues
Total revenues	788,795	665,035	1,518,578	1,267,147
Cruise operating expenses:
Total cruise operating expenses	174,429	142,240	309,599	241,777
Commissions, transportation and other
Cruise operating expenses:
Total cruise operating expenses	426,934	358,305	790,089	648,914
Payroll and related
Cruise operating expenses:
Total cruise operating expenses	265,569	226,315	535,101	453,471
Food
Cruise operating expenses:
Total cruise operating expenses	146,847	128,383	286,381	248,025
Fuel
Cruise operating expenses:
Total cruise operating expenses	181,924	172,309	342,095	332,650
Other operating
Cruise operating expenses:
Total cruise operating expenses	$ 348,801	$ 286,859	$ 694,943	$ 565,593