| Cover Page | Oct. 28, 2019 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Entity Central Index Key | 0000815097 |
| Amendment Flag | false |
| Document Period End Date | Oct. 28, 2019 |
| Entity Registrant Name | CARNIVAL CORP |
| 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 |
| Title of 12(b) Security | Common Stock ($0.01 par value) |
| Trading Symbol | CCL |
| Security Exchange Name | NYSE |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| CARNIVAL PLC | |
| Document 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, 100 Harbour Parade |
| Entity Address, City or Town | Southampton |
| Entity Address, Country | GB |
| Entity Address, Postal Zip Code | SO15 1ST |
| City Area Code | 011 |
| Local Phone Number | 44 23 8065 5000 |
| Title of 12(b) Security | Ordinary Shares each represented By American Depositary Shares ($1.66 par value) |
| Trading Symbol | CUK |
| Security Exchange Name | NYSE |
