Debt - Narrative (Details) $ in Millions	6 Months Ended
	May 31, 2023 USD ($) cruise_ship identity	Feb. 28, 2023 USD ($)	Nov. 30, 2022 USD ($)
Debt Instrument [Line Items]
Total debt	$ 33,710		$ 34,546
Short-term borrowings	0		$ 200
Ships and ship improvements	37,100
Vessels and material intellectual property	23,300
Vessels and related assets	21,700
Debt instrument, convertible, equity component minimum threshold	5,000
Debt instrument, convertible, liquidity component minimum threshold	$ 1,500
Before May 31, 2023 testing date
Debt Instrument [Line Items]
Debt instrument, debt covenant, required debt to capital covenant (percent)	75.00%
May 31, 2024 testing date onwards
Debt Instrument [Line Items]
Debt instrument, debt covenant, required debt to capital covenant (percent)	65.00%
Revolving credit facility
Debt Instrument [Line Items]
Available for borrowing	$ 2,900
New revolving facility
Debt Instrument [Line Items]
Debt instrument, convertible, liquidity component minimum threshold	$ 1,500
New revolving facility | May 31, 2025 testing date
Debt Instrument [Line Items]
Debt instrument, debt covenant, required interest coverage covenant, ratio	2.0
New revolving facility | November 30, 2025 testing date
Debt Instrument [Line Items]
Debt instrument, debt covenant, required interest coverage covenant, ratio	2.5
New revolving facility | February 28, 2026 testing date onwards
Debt Instrument [Line Items]
Debt instrument, debt covenant, required interest coverage covenant, ratio	3.0
Export Credit Facility | May 31, 2025 testing date
Debt Instrument [Line Items]
Debt instrument, debt covenant, required interest coverage covenant, ratio	2.0
Export Credit Facility | November 30, 2025 testing date
Debt Instrument [Line Items]
Debt instrument, debt covenant, required interest coverage covenant, ratio	2.5
Export Credit Facility | February 28, 2026 testing date onwards
Debt Instrument [Line Items]
Debt instrument, debt covenant, required interest coverage covenant, ratio	3.0
Secured | Costa Term Loan Facility
Debt Instrument [Line Items]
Total debt	$ 250
Export credit facility | Export Credit Facility
Debt Instrument [Line Items]
Debt instrument, face amount	200
Export credit facility | Export Credit Facility Due 2035
Debt Instrument [Line Items]
Debt instrument, face amount	800
Debt instrument, repaid of floating rate	1,000
Value of vessels subject to negative pledges	15,400
Export credit facility | Export Credit Facility Due 2036
Debt Instrument [Line Items]
Debt instrument, face amount	200
Unsecured Debt | Export Credit Facility
Debt Instrument [Line Items]
Debt instrument, convertible, liquidity component minimum threshold	1,500
Costa Crociere S.p.A | Secured | Costa Term Loan Facility
Debt Instrument [Line Items]
Total debt	$ 500
Carnival Bermuda (Holdings) Limited | Senior Priority Notes Due 2028
Debt Instrument [Line Items]
Number of unencumbered vessels | cruise_ship	12
Ships and ship improvements	$ 8,300
Changes in identity of vessels | identity	0
Carnival Bermuda (Holdings) Limited | Secured | Senior Priority Notes Due 2028
Debt Instrument [Line Items]
Total debt	$ 2,000
Carnival Bermuda II (Holdings) Limited | New revolving facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		$ 2,100
Line of credit facility, current borrowing capacity	$ 3,000	$ 2,900
Number of unencumbered vessels | cruise_ship	3