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