Annual report pursuant to Section 13 and 15(d)

Revenue and Expense from Contracts with Customers (Details)

v3.10.0.1
Revenue and Expense from Contracts with Customers (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]    
Prepaid expenses and other assets $ 241,011 $ 216,065
Total assets 15,205,970 14,094,869
Advance ticket sales 1,593,219 1,303,498
Total liabilities and shareholders' equity 15,205,970 $ 14,094,869
Adjustments | FASB ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) ("Topic 606")    
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]    
Prepaid expenses and other assets (63,628)  
Total assets (63,628)  
Advance ticket sales (63,628)  
Total liabilities and shareholders' equity (63,628)  
Balances Without Adoption of Topic 606    
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]    
Prepaid expenses and other assets 177,383  
Total assets 15,142,342  
Advance ticket sales 1,529,591  
Total liabilities and shareholders' equity $ 15,142,342