| Cover | Sep. 24, 2021 | Sep. 23, 2021 |
| Entity Information [Line Items] | ||
| Document Type | 8-K | |
| Entity Central Index Key | 0000815097 | |
| Amendment Flag | false | |
| Document Period End Date | Sep. 24, 2021 | |
| Entity Registrant Name | Carnival Corporation | |
| Entity Incorporation, State or Country Code | R1 | |
| Entity File Number | 001-9610 | |
| Entity Tax Identification Number | 59-1562976 | |
| Entity Address, Address Line One | 3655 N.W. 87th Avenue | |
| Entity Address, City or Town | Miami | |
| Entity Address, State or Province | FL | |
| Entity Address, Postal Zip Code | 33178-2428 | |
| City Area Code | 305 | |
| Local Phone Number | 599-2600 | |
| Written Communications | false | |
| Soliciting Material | false | |
| Pre-commencement Tender Offer | false | |
| Pre-commencement Issuer Tender Offer | false | |
| Entity Emerging Growth Company | false | |
| Common Stock | ||
| Entity Information [Line Items] | ||
| Title of 12(b) Security | Common Stock ($0.01 par value) | |
| Trading Symbol | CCL | |
| Security Exchange Name | NYSE | |
| Carnival PLC | ||
| Entity Information [Line Items] | ||
| Entity Central Index Key | 0001125259 | |
| Entity Registrant Name | Carnival plc | |
| Entity Incorporation, State or Country Code | X0 | |
| Entity File Number | 001-15136 | |
| Entity Tax Identification Number | 98-0357772 | |
| Entity Address, Address Line One | Carnival House | |
| Entity Address, Address Line Two | 100 Harbour Parade | |
| Entity Address, City or Town | Southampton | |
| Entity Address, Postal Zip Code | SO15 1ST | |
| Entity Address, Country | GB | |
| City Area Code | 011 | |
| Local Phone Number | 44 23 8065 5000 | |
| Carnival PLC | Ordinary Shares | ||
| Entity Information [Line Items] | ||
| Title of 12(b) Security | Ordinary Shares each represented by American Depository Shares ($1.66 par value) | |
| Trading Symbol | CUK | |
| Security Exchange Name | NYSE | |
| Carnival PLC | 1.875% Senior Notes due 2022 | ||
| Entity Information [Line Items] | ||
| Title of 12(b) Security | 1.875% Senior Notes due 2022 | |
| Trading Symbol | CUK22 | |
| Security Exchange Name | NYSE | |
| Carnival PLC | 1.000% Senior Notes due 2029 | ||
| Entity Information [Line Items] | ||
| Title of 12(b) Security | 1.000% Senior Notes due 2029 | |
| Trading Symbol | CUK29 | |
| Security Exchange Name | NYSE |
