Annual report pursuant to Section 13 and 15(d)

Employee Benefits and Share-Based Compensation - (Details)

v3.24.0.1
Employee Benefits and Share-Based Compensation - (Details) - USD ($)
$ in Millions
 1 Months Ended 12 Months Ended
Jun. 30, 2023
Mar. 31, 2023
Jan. 31, 2013
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Jun. 30, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Maximum percentage of employee eligible compensation that may be contributed towards 401(k) Plan       100.00%      
Matching contributions vesting period       5 years      
Recorded expenses related to 401(k) plan       $ 0.6 $ 11.6 $ 8.7  
Discount rate used in the net periodic benefit cost calculation       5.30% 2.80% 2.30%  
Amortization period of losses       18 years      
First Three Percent Of Contributions On Defined Contribution Plan              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Defined contribution plan, percentage of employee contribution         3.00%    
Employer matching contribution percent         100.00%    
Amounts Greater Than Three Percent [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Employer matching contribution percent         50.00%    
Amounts Greater Than Three Percent [Member] | Minimum              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Defined contribution plan, percentage of employee contribution         3.00%    
Amounts Greater Than Three Percent [Member] | Maximum              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Defined contribution plan, percentage of employee contribution         10.00%    
Shipboard Retirement Plan              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Plan assets       $ 0.0      
Projected benefit obligation included in accrued expenses and other liabilities       1.5 $ 1.4    
Projected benefit obligation included in other long-term liabilities       32.9 $ 27.3    
Employee Stock Option [Member]              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Total unrecognized compensation cost related to share options granted       0.0      
"Time-Based Units" ("TBUs")              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Total unrecognized compensation cost related to restricted share unit awards       $ 89.3      
Weighted-average period for recognition of unrecognized compensation expense       1 year 9 months 18 days      
Share awards granted       6,054,339      
"Time-Based Units" ("TBUs") | Awarded in March 2023 | Employee              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share awards granted   5,800,000          
Share-based award, vesting period   3 years          
Performance-Based RSU Awards              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Total unrecognized compensation cost related to restricted share unit awards       $ 12.1      
Weighted-average period for recognition of unrecognized compensation expense       1 year 7 months 6 days      
Share awards granted       1,155,674      
Performance-Based RSU Awards | Awarded in March 2023 | Members of management team              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share awards granted   800,000          
Market-Based RSU Awards              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Total unrecognized compensation cost related to restricted share unit awards       $ 0.0      
Weighted-average period for recognition of unrecognized compensation expense       0 years      
2013 Performance Incentive Plan              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Maximum number of shares that can be granted to one individual     5,000,000        
2013 Performance Incentive Plan | Maximum              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Ordinary shares authorized     15,035,106        
Restated 2013 Plan | Maximum              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Ordinary shares authorized             39,375,106
Restated 2013 Plan, Amended              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Ordinary shares authorized 42,009,006            
Number of additional shares authorized 2,633,900            
Restated 2013 Plan, Amended | Time-Based Options              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Description of share-based awards vesting period The vesting period for time-based options is typically set at three or four years with a contractual life of 10 years            
Restated 2013 Plan, Amended | Time-Based Options | Maximum              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share-based award, contractual life 10 years            
Restated 2013 Plan, Amended | Time-Based Options | Option Vesting Period, Three Years | Employee              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share-based award, vesting period 3 years            
Restated 2013 Plan, Amended | Time-Based Options | Option Vesting Period, Four Years | Employee              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share-based award, vesting period 4 years            
Restated 2013 Plan, Amended | Restricted Share Units              
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Share-based award, vesting period 3 years