Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share [Abstract]
Net Income (Loss) attributable to Royal Caribbean Cruises Ltd. for basic earnings (loss) per share	$ 1,009,076	$ 32,968	$ 1,419,927	$ (1,655,756)
Add convertible notes interest	20,269	0	67,605	0
Net Income (Loss) attributable to Royal Caribbean Cruises Ltd. for diluted earnings (loss) per share	$ 1,029,345	$ 32,968	$ 1,487,532	$ (1,655,756)
Weighted-average common shares outstanding (in shares)	256,188,000	255,071,000	255,822,000	254,953,000
Dilutive effect of stock-based awards (in shares)	857,000	307,000	586,000	0
Dilutive effect of convertible notes (in shares)	24,831,000	0	27,439,000	0
Diluted weighted-average shares outstanding (in shares)	281,876,000	255,378,000	283,847,000	254,953,000
Basic earnings (loss) per share (in dollars per share)	$ 3.94	$ 0.13	$ 5.55	$ (6.49)
Diluted earnings (loss) per share (in dollars per share)	$ 3.65	$ 0.13	$ 5.24	$ (6.49)
Antidilutive securities (in shares)	0	30,532,145	0	31,085,736