Earnings (Loss) Per Share (Reconciliation of Earnings (Loss) Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Earnings Per Share [Abstract]
Net Income (loss) attributable to Royal Caribbean Cruises Ltd. for basic loss per share	$ 1,697	$ (2,156)	$ (5,260)
Net Income (Loss) attributable to Royal Caribbean Cruises Ltd. for diluted earnings (loss) per share	1,785	(2,156)	(5,260)
Add convertible notes interest	$ 88	$ 0	$ 0
Weighted-average common shares outstanding (in shares)	256	255	252
Dilutive effect of stock-based awards (in shares)	1	0	0
Diluted effect of convertible notes	26	0	0
Diluted weighted-average shares outstanding (in shares)	283	255	252
Basic earnings (loss) per share (in dollars per share)	$ 6.63	$ (8.45)	$ (20.89)
Diluted earnings (loss) per share (in dollars per share)	$ 6.31	$ (8.45)	$ (20.89)