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Earnings Per Share - Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Earnings Per Share [Abstract]    
Net Income attributable to Royal Caribbean Cruises Ltd. for basic earnings per share $ 730 $ 360
Add convertible notes interest and inducement expense 15 19
Net Income attributable to Royal Caribbean Cruises Ltd. for diluted earnings per share $ 745 $ 379
Weighted-average common shares outstanding (in shares) 269 257
Dilutive effect of stock-based awards (in shares) 1 1
Dilutive effect of convertible notes (in shares) 6 23
Diluted weighted-average shares outstanding (in shares) 276 281
Basic earnings per share (in dollars per share) $ 2.71 $ 1.40
Diluted earnings per share (in dollars per share) $ 2.70 $ 1.35