Annual report pursuant to Section 13 and 15(d)

Employee Benefits and Share-Based Compensation - (Details)

v3.22.0.1
Employee Benefits and Share-Based Compensation - (Details) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Jun. 30, 2021
May 31, 2021
May 31, 2016
Apr. 30, 2014
Jan. 31, 2013
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
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           $ 8.7 $ 2.8 $ 9.1
Discount rate used in the net periodic benefit cost calculation           2.30% 3.20% 4.20%
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           0.9    
Projected benefit obligation included in other long-term liabilities           33.8 $ 30.7  
Options                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Total intrinsic value of stock options exercised           0.0 0.6 $ 13.3
Proceeds from the exercise of share options           0.0 2.2 $ 28.3
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           $ 109.7    
Weighted-average period for recognition of unrecognized compensation expense           1 year 8 months 12 days    
Share awards granted           3,137,453    
"Time-Based Units" ("TBUs") | Awarded on March 2, 2020 | Employee                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Share awards granted 3,100,000              
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           $ 21.7    
Weighted-average period for recognition of unrecognized compensation expense           1 year 10 months 24 days    
Share awards granted           736,898    
Performance-Based RSU Awards | Awarded on March 2, 2020 | Members of management team                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Share awards granted 700,000              
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                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Number of additional shares authorized     12,430,000          
Restated 2013 Plan | Maximum                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Ordinary shares authorized     27,465,106          
Restated 2013 Plan, Amended                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Ordinary shares authorized   32,375,106            
Number of additional shares authorized   4,910,000            
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            
Employee Stock Purchase Plan                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Percentage of purchase price discount           15.00%    
Accrued payroll liability           $ 2.7 $ 1.4  
Employee Stock Purchase Plan | Maximum                
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                
Number of additional shares authorized       2,000,000