| Cover | Dec. 15, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Dec. 15, 2020 |
| Entity File Number | 333-128780 |
| Entity Registrant Name | NCL CORPORATION LTD. |
| Entity Central Index Key | 0001318742 |
| Entity Tax Identification Number | 20-0470163 |
| Entity Incorporation, State or Country Code | D0 |
| Entity Address, Address Line One | 7665 Corporate Center Drive |
| Entity Address, City or Town | Miami |
| Entity Address, State or Province | FL |
| Entity Address, Postal Zip Code | 33126 |
| City Area Code | 305 |
| Local Phone Number | 436-4000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
