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Debt - Narrative (Details) $ in Millions, € in Billions, £ in Billions | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Aug. 31, 2024 USD ($) cruise_ship identity | Aug. 31, 2023 USD ($) | Sep. 27, 2024 USD ($) | Aug. 31, 2024 EUR (€) cruise_ship | Aug. 31, 2024 GBP (£) cruise_ship | Jul. 01, 2024 | Apr. 30, 2024 USD ($) | Nov. 30, 2023 USD ($)
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Total Debt, net of unamortized debt issuance costs and discounts | $ 28,856 |  |  |  |  |  |  | $ 30,572
Prepayment amount | 41 | $ 67 |  |  |  |  |  |
Ships and ship improvements | 40,000 |  |  |  |  |  |  |
Vessels and material intellectual property | 22,800 |  |  |  |  |  |  |
Vessels and related assets | 21,200 |  |  |  |  |  |  |
Debt instrument, convertible, equity component minimum threshold | $ 5,000 |  |  |  |  |  |  |
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% |  |  |  |  |  |  |
Guarantor Subsidiaries |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Prepayment amount | $ 3,500 |  |  |  |  |  |  |
Revolving facility |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, convertible, liquidity component minimum threshold | $ 1,500 |  |  |  |  |  |  |
Revolving facility | May 31, 2025 testing date |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, debt covenant, required interest coverage covenant, ratio | 2.0 |  |  |  |  |  |  |
Revolving facility | November 30, 2025 testing date |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, debt covenant, required interest coverage covenant, ratio | 2.5 |  |  |  |  |  |  |
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 |  |  |  |  |  |  |
Revolving credit facility |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Available for borrowing | $ 3,000 |  |  |  |  |  |  |
Carnival Holdings (Bermuda) II Limited | Revolving facility |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | 3,000 |  |  |  |  |  |  |
Carnival Holdings (Bermuda) II Limited | Multi-Currency Revolving Facility |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | 1,900 |  |  | € 0.9 | £ 0.1 |  |  |
Senior Priority Notes Due 2028 | Carnival Bermuda (Holdings) Limited |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Ships and ship improvements | $ 8,000 |  |  |  |  |  |  |
Number of unencumbered vessels | cruise_ship | 12 |  |  | 12 | 12 |  |  |
Changes in identity of vessels | identity | 0 |  |  |  |  |  |  |
Senior Priority Notes Due 2028 | Secured | Carnival Bermuda (Holdings) Limited |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Total Debt, net of unamortized debt issuance costs and discounts | $ 2,000 |  |  |  |  |  |  |
Costa Term Loan Facility | Secured |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Total Debt, net of unamortized debt issuance costs and discounts | 250 |  |  |  |  |  |  |
Costa Term Loan Facility | Secured | Costa Crociere S.p.A |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Total Debt, net of unamortized debt issuance costs and discounts | $ 300 |  |  |  |  |  |  |
Export Credit Facility | May 31, 2025 testing date |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, debt covenant, required interest coverage covenant, ratio | 2.0 |  |  |  |  |  |  |
Export Credit Facility | November 30, 2025 testing date |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, debt covenant, required interest coverage covenant, ratio | 2.5 |  |  |  |  |  |  |
Export Credit Facility | February 28, 2026 testing date onwards |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, debt covenant, required interest coverage covenant, ratio | 3.0 |  |  |  |  |  |  |
Export Credit Facility | Line of credit | Sun Princess Limited |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, face amount | $ 900 |  |  |  |  |  |  |
Export Credit Facility | Line of credit | Sun Princess II Limited |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, face amount | $ 100 |  |  |  |  |  |  |
2028 Secured Term Loan Facility | Line of credit |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  | $ 1,700 |
2027 Secured Term Loan Facility | Line of credit |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  | 1,000 |
Senior Unsecured Notes Due 2030 | Unsecured Debt |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  | $ 535 |
Euro-denominated Notes Payable Due March 2026 | Unsecured Debt | Guarantor Subsidiaries |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, interest rate (as a percent) | 7.60% |  |  | 7.60% | 7.60% |  |  |
Notes Payable Due August 2027 | Secured | Guarantor Subsidiaries |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, interest rate (as a 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 (as a percent) | 5.80% |  |  | 5.80% | 5.80% |  |  |
Export Credit Facility Due 2035 | Line of credit |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, face amount | $ 2,300 |  |  |  |  |  |  |
Value of vessels subject to negative pledges | 18,900 |  |  |  |  |  |  |
Convertible Senior Notes Due 2024 | Subsequent Event |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Convertible notes payable |  |  | $ 426 |  |  |  |  |
Convertible Senior Notes Due 2024 | Guarantor Subsidiaries |  |  |  |  |  |  |  |
Schedule of Debt Outstanding [Line Items] |  |  |  |  |  |  |  |
Debt instrument, interest rate (as a percent) |  |  |  |  |  | 5.80% |  |
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 |  |  |

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