Annual report pursuant to Section 13 and 15(d)

Employee Benefits and Share Option Plans - (Detail Textuals)

v3.3.1.900
Employee Benefits and Share Option Plans - (Detail Textuals) - USD ($)
 1 Months Ended 12 Months Ended
Aug. 04, 2015
Aug. 31, 2015
Jul. 31, 2015
Jan. 31, 2015
Jan. 31, 2013
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Apr. 30, 2014
Defined Benefit Plan Disclosure [Line Items]                  
Intrinsic value of units exchanged           $ 40,890,000      
Proceeds from the exercise of share options           69,127,000 $ 5,857,000 $ 2,020,000  
Share-based compensation expense           41,800,000 20,600,000 23,100,000  
Forfeited contributions utilized           400,000 100,000 100,000  
Recorded expenses related to 401k plan and SERP           $ 5,300,000 $ 3,700,000 $ 3,300,000  
Discount rate used in the net periodic benefit cost calculation           3.80% 4.80% 3.80%  
Amortization period of losses           18 years 11 months 12 days      
Total severance expense under separation agreement       $ 13,400,000          
Value of acceleration of equity-based awards in severance costs       $ 8,200,000          
Deferred Bonus | Kevin M. Sheehan                  
Defined Benefit Plan Disclosure [Line Items]                  
Approved bonus payment under separation agreement             $ 1,627,500    
Performance Incentive Plan                  
Defined Benefit Plan Disclosure [Line Items]                  
Share options and ordinary shares, authorized         15,035,106        
Maximum number of shares that can be granted to one individual         5,000,000        
Performance Incentive Plan | Minimum                  
Defined Benefit Plan Disclosure [Line Items]                  
Share based award, contractual life         7 years        
Performance Incentive Plan | Maximum                  
Defined Benefit Plan Disclosure [Line Items]                  
Share based award, contractual life         10 years        
Employee Stock Purchase Plan                  
Defined Benefit Plan Disclosure [Line Items]                  
Share-based compensation expense           $ 400,000 90,000 $ 0  
Stock Repurchase Program, Number of Shares Authorized to be Repurchased                 2,000,000
Percentage of purchase price discount           15.00%      
Accrued payroll liability           $ 1,100,000 300,000    
401(k) Plan                  
Defined Benefit Plan Disclosure [Line Items]                  
Maximum percentage of employee eligible compensation that may be contributed towards 401(k)           100.00%      
401(k) Plan | The first 3%                  
Defined Benefit Plan Disclosure [Line Items]                  
Employer matching contribution percent           100.00%      
Defined contribution plan, percentage of employee contribution           3.00%      
Matching contributions vesting period           5 years      
401(k) Plan | Amounts greater than 3%                  
Defined Benefit Plan Disclosure [Line Items]                  
Employer matching contribution percent           50.00%      
401(k) Plan | Amounts greater than 3% | Minimum                  
Defined Benefit Plan Disclosure [Line Items]                  
Defined contribution plan, percentage of employee contribution           3.00%      
Supplemental Executive Retirement Plan (SERP)                  
Defined Benefit Plan Disclosure [Line Items]                  
Participants' deferred compensation accounts under the SERP Plan           $ 500,000 400,000    
Shipboard Retirement Plan                  
Defined Benefit Plan Disclosure [Line Items]                  
Projected benefit obligation included in accrued expenses and other liabilities           1,100,000 900,000    
Projected benefit obligation included in other long term liabilities           20,000,000 18,800,000    
Non Recurring Costs | Management Exchange Agreement                  
Defined Benefit Plan Disclosure [Line Items]                  
Share-based compensation expense             6,000,000    
Non Recurring Costs | Corporate Reorganization                  
Defined Benefit Plan Disclosure [Line Items]                  
Share-based compensation expense               18,500,000  
Options                  
Defined Benefit Plan Disclosure [Line Items]                  
Incremental cost associated with vested awards           5,500,000      
Share based award, vesting period   3 years 3 years            
Share options granted   700,000 3,500,000            
Exercise price of share options granted   $ 59.43 $ 56.19            
Total intrinsic value of stock options exercised           68,000,000 4,500,000 1,400,000  
Share based award, contractual life   10 years 10 years            
Proceeds from the exercise of share options           $ 69,100,000 $ 6,100,000 $ 2,000,000  
Time Based Options                  
Defined Benefit Plan Disclosure [Line Items]                  
Share options granted           5,130,000      
Exercise price of share options granted           $ 56.64      
Weighted average period for recognition of unrecognized compensation expense           2 years 6 months 25 days      
Weighted-average grant-date fair value of options granted           $ 20.90 $ 16.86 $ 6.38  
Total unrecognized compensation cost related to share options granted           $ 106,100,000      
Time Based Options | Vesting on June 30, 2017                  
Defined Benefit Plan Disclosure [Line Items]                  
Vesting percentage 50.00%                
Time Based Options | Vesting on June 30, 2019                  
Defined Benefit Plan Disclosure [Line Items]                  
Vesting percentage 50.00%                
Time Based Options | Amendment to employment agreement                  
Defined Benefit Plan Disclosure [Line Items]                  
Share options granted 625,000                
Exercise price of share options granted $ 59.43                
Share based award, contractual life 10 years                
Performance Based Options                  
Defined Benefit Plan Disclosure [Line Items]                  
Share options granted                
Exercise price of share options granted                
Weighted average period for recognition of unrecognized compensation expense           0 years      
Weighted-average grant-date fair value of options granted           $ 17.07      
Total unrecognized compensation cost related to share options granted           $ 0      
Performance Based Options | Amendment to employment agreement                  
Defined Benefit Plan Disclosure [Line Items]                  
Share options granted 416,667                
Exercise price of share options granted $ 59.43                
Share based award, contractual life 10 years                
Market Based Share Option Awards                  
Defined Benefit Plan Disclosure [Line Items]                  
Share options granted           208,333      
Exercise price of share options granted           $ 59.43      
Weighted average period for recognition of unrecognized compensation expense           1 year 11 months 12 days      
Weighted-average grant-date fair value of options granted           $ 12.37      
Total unrecognized compensation cost related to share options granted           $ 2,000,000      
Market Based Share Option Awards | Amendment to employment agreement                  
Defined Benefit Plan Disclosure [Line Items]                  
Share options granted 208,333                
Exercise price of share options granted $ 59.43                
Share based award, contractual life 10 years                
Restricted Stock                  
Defined Benefit Plan Disclosure [Line Items]                  
Unrecognized compensation expense           $ 2,000,000      
Weighted average period for recognition of unrecognized compensation expense           1 year 2 months 12 days      
Total fair value of shares vested           $ 40,900,000      
Description of share-based awards vesting period           equal quarterly installments over 1 or 2 years or in annual installments over 4 years      
TBUs                  
Defined Benefit Plan Disclosure [Line Items]                  
Unrecognized compensation expense           $ 7,900,000      
Weighted average period for recognition of unrecognized compensation expense           3 years 6 months      
Share awards granted           150,000      
TBUs | Amendment to employment agreement                  
Defined Benefit Plan Disclosure [Line Items]                  
Share awards granted 150,000                
Performance-Based Units | Amendment to employment agreement                  
Defined Benefit Plan Disclosure [Line Items]                  
Share awards granted 100,000                
Market-based RSUs                  
Defined Benefit Plan Disclosure [Line Items]                  
Unrecognized compensation expense           $ 1,100,000      
Weighted average period for recognition of unrecognized compensation expense           1 year 6 months 14 days      
Share awards granted           50,000      
Market-based RSUs | Amendment to employment agreement                  
Defined Benefit Plan Disclosure [Line Items]                  
Share awards granted 50,000