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Debt - Additional Information (Details) $ / shares in Units, € in Billions, £ in Billions | 1 Months Ended | 2 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Nov. 30, 2022 USD ($) day | Jan. 27, 2025 | Nov. 30, 2024 USD ($) cruise_ship $ / shares | Nov. 30, 2023 USD ($) cruise_ship | Nov. 30, 2022 USD ($) | Nov. 30, 2024 EUR (€) cruise_ship | Nov. 30, 2024 GBP (£) cruise_ship | Jul. 01, 2024 USD ($)
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Total Debt, net of unamortized debt issuance costs and discounts |  |  | $ 27,475,000,000 | $ 30,572,000,000 |  |  |  |
Debt extinguishment costs |  |  | 41,000,000 | $ 79,000,000 | $ 1,000,000 |  |  |
Ships and ship improvements |  |  | 39,300,000,000 |  |  |  |  |
Vessels and material intellectual property |  |  | 22,400,000,000 |  |  |  |  |
Vessels and related assets |  |  | 20,800,000,000 |  |  |  |  |
Debt instrument, convertible, equity component minimum threshold |  |  | 5,000,000,000 |  |  |  |  |
Debt instrument, convertible, liquidity component minimum threshold |  |  | $ 1,500,000,000 |  |  |  |  |
Debt Instrument, Debt Covenant, Period Five |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, debt covenant, required debt to capital covenant (percent) |  |  | 65.00% |  |  |  |  |
Guarantor Subsidiaries |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt extinguishment costs |  |  | $ 3,800,000,000 |  |  |  |  |
Revolving Facility |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Line of credit facility available amount |  |  | $ 2,900,000,000 |  |  |  |  |
New Revolving Facility | Debt Instrument, Debt Covenant, Period One |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, debt covenant, required interest coverage covenant, ratio |  |  | 2.0 |  |  |  |  |
New Revolving Facility | Debt Instrument, Debt Covenant, Period Two |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, debt covenant, required interest coverage covenant, ratio |  |  | 2.5 |  |  |  |  |
New Revolving Facility | Debt Instrument, Debt Covenant, Period Three |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, debt covenant, required interest coverage covenant, ratio |  |  | 3.0 |  |  |  |  |
Carnival Holdings (Bermuda) II Limited | Revolving Facility |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  | $ 2,900,000,000 |  |  |  |  |
Carnival Holdings (Bermuda) II Limited | Multi-Currency Revolving Facility |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  | 1,900,000,000 |  |  | € 0.9 | £ 0.1 |
Carnival Bermuda II (Holdings) Limited | New Revolving Facility |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Number of unencumbered vessels | cruise_ship |  |  |  | 3 |  |  |  |
Line of credit facility, current borrowing capacity |  |  |  | $ 2,900,000,000 |  |  |  |
Convertible |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
If-converted value above par value |  |  | 1,000,000,000 |  |  |  |  |
Convertible notes |  |  | $ 84,500,000 |  |  |  |  |
Senior Priority Notes Due 2028 | Carnival Bermuda (Holdings) Limited |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Number of unencumbered vessels | cruise_ship |  |  | 12 |  |  | 12 | 12 |
Ships and ship improvements |  |  | $ 8,000,000,000 |  |  |  |  |
Changes in identity of vessels | cruise_ship |  |  | 0 |  |  |  |  |
Senior Priority Notes Due 2028 | Secured Debt | Carnival Bermuda (Holdings) Limited |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Total Debt, net of unamortized debt issuance costs and discounts |  |  | $ 2,000,000,000 |  |  |  |  |
Export Credit Facility | Export Credit Facility | Sun Princess Limited |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  | 900,000,000 |  |  |  |  |
Export Credit Facility | Export Credit Facility | Sun Princess II Limited |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  | 200,000,000 |  |  |  |  |
2028 Secured Term Loan Facility | Export Credit Facility |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  | 1,700,000,000 |  |  |  |  |
2027 Secured Term Loan Facility | Export Credit Facility |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  | 1,000,000,000 |  |  |  |  |
2027 Secured Term Loan Facility | Export Credit Facility | Subsequent Event | Minimum |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Interest rate floor (percent) |  | 0.0075 |  |  |  |  |  |
2027 Secured Term Loan Facility | Export Credit Facility | Subsequent Event | Maximum |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Interest rate floor (percent) |  | 0.020 |  |  |  |  |  |
Senior Unsecured Notes Due 2030 | Unsecured Debt |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  | $ 535,000,000 |  |  |  |  |
Euro-denominated Notes Payable Due January 2030 | Unsecured Debt | Guarantor Subsidiaries |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, interest rate (percent) |  |  | 5.80% |  |  | 5.80% | 5.80% |
Euro-denominated Notes Payable Due March 2026 | Unsecured Debt | Guarantor Subsidiaries |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, interest rate (percent) |  |  | 7.60% |  |  | 7.60% | 7.60% |
Notes Payable Due August 2027 | Secured Debt | Guarantor Subsidiaries |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, interest rate (percent) |  |  | 9.90% |  |  | 9.90% | 9.90% |
Notes Payable Due March 2027 | Unsecured Debt | Guarantor Subsidiaries |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, interest rate (percent) |  |  | 5.80% |  |  | 5.80% | 5.80% |
Export Credit Facility Due 2035 | Export Credit Facility |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  | $ 2,400,000,000 |  |  |  |  |
Undrawn export credit facilities |  |  | 7,800,000,000 |  |  |  |  |
Value of vessels subject to negative pledges |  |  | $ 18,500,000,000 |  |  |  |  |
Convertible Senior Notes Due 2024 | Guarantor Subsidiaries |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, interest rate (percent) |  |  |  |  |  |  |  | 5.80%
Common stock, value, outstanding |  |  |  |  |  |  |  | $ 41,500,000
Senior Convertible Notes Due 2027 | Convertible |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, face amount | $ 1,100,000,000 |  |  |  | $ 1,100,000,000 |  |  |
Debt instrument, interest rate (percent) | 5.80% |  |  |  | 5.80% |  |  |
Debt instrument, convertible, conversion ratio |  |  | 0.075 |  |  |  |  |
Debt instrument, conversion price (in dollars per share) | $ / shares |  |  | $ 13.39 |  |  |  |  |
Debt instrument, redemption price, percentage (less than 98%) |  |  | 100.00% |  |  |  |  |
Convertible, threshold percentage of stock price trigger (percent) | 130.00% |  |  |  |  |  |  |
Convertible threshold trading days | day | 20 |  |  |  |  |  |  |
Convertible threshold consecutive trading days | day | 30 |  |  |  |  |  |  |
Revolving Facility Notes Due 2028 | Carnival Bermuda (Holdings) Limited |  |  |  |  |  |  |  |
Schedule Of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Number of unencumbered vessels | cruise_ship |  |  | 3 |  |  | 3 | 3 |
Ships and ship improvements |  |  | $ 2,800,000,000 |  |  |  |  |

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