Annual report pursuant to Section 13 and 15(d)

Employee Benefits and Share Option Plans - Additional information (Detail)

v2.4.0.8
Employee Benefits and Share Option Plans - Additional information (Detail) (USD $)
3 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Jan. 31, 2013
Performance Incentive Plan
Jan. 31, 2013
Performance Incentive Plan
Minimum
Jan. 31, 2013
Performance Incentive Plan
Maximum
Dec. 31, 2013
401(k) Plan
Dec. 31, 2013
401(k) Plan
The first 3%
Dec. 31, 2013
401(k) Plan
The next 4%-10%
Dec. 31, 2013
401(k) Plan
The next 4%-10%
Minimum
Dec. 31, 2013
401(k) Plan
The next 4%-10%
Maximum
Dec. 31, 2013
Supplemental Executive Retirement Plan (SERP)
Dec. 31, 2012
Supplemental Executive Retirement Plan (SERP)
Dec. 31, 2013
Shipboard Retirement Plan
Dec. 31, 2012
Shipboard Retirement Plan
Dec. 31, 2013
Non Recurring Costs
Dec. 31, 2013
TBUs
Dec. 31, 2013
Performance-Based Units
Dec. 31, 2013
Restricted Stock
Dec. 31, 2013
Options
Dec. 31, 2013
TBUs and PBUs
Dec. 31, 2012
TBUs and PBUs
Dec. 31, 2011
TBUs and PBUs
Stock Based Compensation And Employee Benefit Plans [Line Items]                                                
Percentage of profit interests granted to senior management                                   50.00% 50.00%          
Share based award, vesting period           4 years 5 years                     5 years   2 years        
Total intrinsic value of stock options exercised   $ 1,400,000                                       $ 33,300,000 $ 0 $ 0
Unrecognized compensation expense                                       200,000   1,000,000    
Weighted average period for recognition of unrecognized compensation expense                                       1 year 3 months 18 days 3 years 4 months 24 days 3 years 9 months 18 days    
Total fair value of shares vested                                       200,000   1,400,000 1,400,000 1,400,000
Share options and ordinary shares, authorized         15,035,106                                      
Maximum number of shares that can be granted to one individual         5,000,000                                      
Share based award, contractual life           7 years 10 years                                  
Weighted-average grant-date fair value of options granted   $ 6.38                                            
Proceeds from the exercise of share options   2,020,000                                            
Total unrecognized compensation cost related to share options granted   23,800,000                                            
Share-based compensation expense 4,500,000 23,100,000 5,200,000 1,200,000                         18,500,000              
Maximum percentage of employee eligible compensation that may be contributed towards 401(k)               100.00%                                
Employer matching contribution percent                 100.00% 50.00%                            
Defined contribution plan, percentage of employee contribution                 3.00%   4.00% 10.00%                        
Matching contributions vesting period               5 years                                
Forfeited contributions utilized   100,000 100,000 200,000                                        
Participants' deferred compensation accounts under the SERP Plan                         500,000 400,000                    
Recorded expenses related to 401k plan and SERP   3,300,000 2,800,000 2,600,000                                        
Projected benefit obligation included in accrued expenses and other liabilities                             800,000 700,000                
Projected benefit obligation included in other long term liabilities                             $ 14,800,000 $ 15,500,000                
Discount rate used in the net periodic benefit cost calculation   3.80% 4.70% 5.50%                                        
Amortization period of losses   19 years 1 month 21 days