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Debt - Narrative (Details) $ in Millions, € in Billions, £ in Billions | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Jan. 31, 2025 | Feb. 28, 2025 USD ($) cruise_ship identity | Feb. 29, 2024 USD ($) | Feb. 28, 2025 EUR (€) cruise_ship | Feb. 28, 2025 GBP (£) cruise_ship
Schedule of Debt Outstanding [Line Items] |  |  |  |  |
Debt extinguishment and modification costs |  | $ (252) | $ (33) |  |
Debt extinguishment costs |  | 197 | $ 31 |  |
Ships and ship improvements |  | 39,000 |  |  |
Vessels and material intellectual property |  | 22,100 |  |  |
Vessels and related assets |  | 20,500 |  |  |
Debt instrument, convertible, equity component minimum threshold |  | 5,000 |  |  |
Debt instrument, convertible, liquidity component minimum threshold |  | $ 1,500 |  |  |
Debt instrument, debt covenant, period four |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |
Debt instrument, debt covenant, required debt to capital covenant (as a percent) |  | 65.00% |  |  |
Revolving facility |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |
Available for borrowing |  | $ 2,900 |  |  |
New Revolving Facility | May 31, 2025 testing date |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |
Debt instrument, debt covenant, required interest coverage covenant, ratio |  | 2.0 |  |  |
New Revolving Facility | November 30, 2025 testing date |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |
Debt instrument, debt covenant, required interest coverage covenant, ratio |  | 2.5 |  |  |
New Revolving Facility | February 28, 2026 testing date onwards |  |  |  |  |
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 |  |  |
Carnival Holdings (Bermuda) II Limited | Multi-Currency Revolving Facility |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  | 1,900 |  | € 0.9 | £ 0.1
Export Credit Facility | Line of Credit | Sun Princess Limited |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |
Debt instrument, face amount |  | 800 |  |  |
Export Credit Facility | Line of Credit | Sun Princess II Limited |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |
Debt instrument, face amount |  | 200 |  |  |
2027 Secured Term Loan Facility | Line of Credit | Minimum |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |
Interest rate floor (percent) | 0.008 |  |  |  |
2027 Secured Term Loan Facility | Line of Credit | Maximum |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |
Interest rate floor (percent) | 2.0 |  |  |  |
Senior Unsecured Notes Due 2030 | Unsecured Debt |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |
Debt instrument, face amount |  | $ 1,000 |  |  |
Notes Payable Due March 2030 | Unsecured Debt | Guarantor Subsidiaries |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |
Debt instrument, interest rate (as a percent) |  | 5.80% |  | 5.80% | 5.80%
Notes Payable Due June 2030 | Unsecured Debt | Guarantor Subsidiaries |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |
Debt instrument, interest rate (as a percent) |  | 10.50% |  | 10.50% | 10.50%
Senior Unsecured Notes Due 2033 | Unsecured Debt |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |
Debt instrument, face amount |  | $ 2,000 |  |  |
Notes Payable Due February 2033 | Unsecured Debt | Guarantor Subsidiaries |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |
Debt instrument, interest rate (as a percent) |  | 6.10% |  | 6.10% | 6.10%
Notes Payable Due May 2028 | Secured | Guarantor Subsidiaries |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |
Debt instrument, interest rate (as a percent) |  | 10.40% |  | 10.40% | 10.40%
Export Credit Facility Due 2035 | Line of Credit |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |
Undrawn export credit facilities |  | $ 7,800 |  |  |
Value of vessels subject to negative pledges |  | 18,500 |  |  |
Revolving Facility Notes Due 2028 | Carnival Bermuda (Holdings) Limited |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |
Ships and ship improvements |  | $ 2,800 |  |  |
Number of unencumbered vessels | cruise_ship |  | 3 |  | 3 | 3
Senior Priority Notes Due 2028 | Carnival Bermuda (Holdings) Limited |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |
Changes in identity of vessels | identity |  | 0 |  |  |

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