Debt - Additional Information (Details) $ / shares in Units, € in Billions, £ in Billions	1 Months Ended				12 Months Ended
	Aug. 31, 2023 USD ($) Rate	Feb. 28, 2023 USD ($) extension cruise_ship	Nov. 30, 2022 USD ($) day	Apr. 30, 2020 $ / shares	Nov. 30, 2023 USD ($) cruise_ship $ / shares	Nov. 30, 2023 EUR (€) cruise_ship	Nov. 30, 2023 GBP (£) cruise_ship	May 31, 2023 USD ($)	Aug. 31, 2022 USD ($)	Nov. 30, 2020 USD ($)
Schedule Of Debt Outstanding [Line Items]
Total Debt, net of unamortized debt issuance costs and discounts			$ 34,546,000,000		$ 30,572,000,000
Short-term borrowings			200,000,000		0
Ships and ship improvements					37,100,000,000
Vessels and material intellectual property					23,200,000,000
Vessels and related assets					21,500,000,000
Debt instrument, convertible, equity component minimum threshold					5,000,000,000
Debt instrument, convertible, liquidity component minimum threshold					1,500,000,000
Cash, cash equivalents, and short-term investments					$ 5,400,000,000
Debt Instrument, Debt Covenant, Period Four
Schedule Of Debt Outstanding [Line Items]
Debt instrument, debt covenant, required debt to capital covenant (percent)					70.00%
Debt Instrument, Debt Covenant, Period Five
Schedule Of Debt Outstanding [Line Items]
Debt instrument, debt covenant, required debt to capital covenant (percent)					65.00%
New Revolving Facility
Schedule Of Debt Outstanding [Line Items]
Line of credit facility, current borrowing capacity					$ 2,100,000,000
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
Revolving credit facility
Schedule Of Debt Outstanding [Line Items]
Line of credit facility available amount					$ 3,000,000,000
Carnival Bermuda II (Holdings) Limited | New Revolving Facility
Schedule Of Debt Outstanding [Line Items]
Line of credit facility, maximum borrowing capacity		$ 2,100,000,000						$ 2,100,000,000
Number of options to extend maturity date | extension		2
Extension of maturity date (in years)		1 year
Line of credit facility, current borrowing capacity		$ 2,900,000,000
Number of unencumbered vessels | cruise_ship		3
Convertible
Schedule Of Debt Outstanding [Line Items]
If-converted value above par value					356,000,000
Convertible notes					$ 127,100,000
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					$ 8,100,000,000
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
Costa Term Loan Facility | Secured Debt
Schedule Of Debt Outstanding [Line Items]
Total Debt, net of unamortized debt issuance costs and discounts					250,000,000
Costa Term Loan Facility | Secured Debt | Costa Crociere S.p.A
Schedule Of Debt Outstanding [Line Items]
Total Debt, net of unamortized debt issuance costs and discounts					$ 500,000,000
Export Credit Facility | Debt Instrument, Debt Covenant, Period One
Schedule Of Debt Outstanding [Line Items]
Debt instrument, debt covenant, required interest coverage covenant, ratio					2.0
Export Credit Facility | Debt Instrument, Debt Covenant, Period Two
Schedule Of Debt Outstanding [Line Items]
Debt instrument, debt covenant, required interest coverage covenant, ratio					2.5
Export Credit Facility | Debt Instrument, Debt Covenant, Period Three
Schedule Of Debt Outstanding [Line Items]
Debt instrument, debt covenant, required interest coverage covenant, ratio					3.0
Export Credit Facility | Export Credit Facility | Sun Princess Limited
Schedule Of Debt Outstanding [Line Items]
Debt instrument, face amount					$ 200,000,000
Export Credit Facility | Export Credit Facility | Sun Princess II Limited
Schedule Of Debt Outstanding [Line Items]
Debt instrument, face amount					100,000,000
Export Credit Facility | Unsecured Debt
Schedule Of Debt Outstanding [Line Items]
Debt instrument, convertible, liquidity component minimum threshold					1,500,000,000
2029 Senior Secured Notes | Secured Debt
Schedule Of Debt Outstanding [Line Items]
Long-term line of credit	$ 500,000,000
Line of credit facility, commitment fee (percent) | Rate	7.00%
Senior Secured First Lien Term Loan B Facility | Secured Debt
Schedule Of Debt Outstanding [Line Items]
Long-term line of credit	$ 1,300,000,000
Senior Secured First Lien Term Loan B Facility | Export Credit Facility
Schedule Of Debt Outstanding [Line Items]
Line of credit facility, commitment fee (percent) | Rate	3.00%
Senior Secured First Lien Term Loan B Facility | Export Credit Facility | Secured Overnight Financing Rate (SOFR)
Schedule Of Debt Outstanding [Line Items]
Line of credit facility, commitment fee (percent) | Rate	0.75%
Redemptions and Retirements Due 2024 Through 2027 | Secured Debt
Schedule Of Debt Outstanding [Line Items]
Debt instrument, redemption of principal amount					2,800,000,000
Long term debt value retired					2,800,000,000
Export Credit Facility Due 2035 | Export Credit Facility
Schedule Of Debt Outstanding [Line Items]
Debt instrument, face amount					1,200,000,000
Debt instrument, repaid of floating rate					1,000,000,000
Value of vessels subject to negative pledges					$ 15,600,000,000
Senior Convertible Notes due 2023 | Convertible
Schedule Of Debt Outstanding [Line Items]
Debt instrument, face amount										$ 2,000,000,000
Debt instrument, interest rate (percent)										5.80%
Debt instrument, convertible, conversion ratio				0.1
Debt instrument, conversion price (in dollars per share) | $ / shares				$ 10
Senior Convertible Notes Due 2024 | Convertible
Schedule Of Debt Outstanding [Line Items]
Debt instrument, face amount			87,000,000						$ 339,000,000
Debt instrument, interest rate (percent)									5.80%
Debt instrument, redemption price, percentage (less than 98%)					100.00%
Senior Convertible Notes Due 2027 | Convertible
Schedule Of Debt Outstanding [Line Items]
Debt instrument, face amount			$ 1,100,000,000
Debt instrument, interest rate (percent)			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
U.S. Dollar-denominated Revolving Credit Facility | Unsecured Debt
Schedule Of Debt Outstanding [Line Items]
Line of credit, current					$ 1,700,000,000
Euro-denominated Revolving Credit Facility | Unsecured Debt
Schedule Of Debt Outstanding [Line Items]
Line of credit, current | €						€ 1.0
Sterling-denominated Revolving Credit Facility | Unsecured Debt
Schedule Of Debt Outstanding [Line Items]
Line of credit, current | £							£ 0.2