Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Other (Details)

v3.21.2
Summary of Significant Accounting Policies - Other (Details)
$ in Thousands, shares in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2021
USD ($)
item
shares
Sep. 30, 2020
USD ($)
shares
Sep. 30, 2021
USD ($)
item
shares
Sep. 30, 2020
USD ($)
shares
Dec. 31, 2020
USD ($)
Schedule Of Significant Accounting Policies [Line Items]          
Antidilutive securities excluded from computation of earnings per share | shares 98.9 124.0 106.3 63.4  
Goodwill $ 98,134   $ 98,134   $ 98,134
Indefinite-lived intangible assets, trade names $ 500,525   $ 500,525   500,525
Number of cruise ships | item 28   28    
Ship, carrying value $ 13,480,120   $ 13,480,120   13,411,226
Paid-in-kind interest         19,300
Foreign currency transaction gain (loss) 9,900 $ (12,300) 14,900 $ (2,600)  
Accounts receivable, net 990,384   990,384   $ 20,578
Credit Card Processors          
Schedule Of Significant Accounting Policies [Line Items]          
Accounts receivable, net $ 964,700   $ 964,700