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Debt - Additional Information (Details) $ / shares in Units, € in Billions, £ in Billions | 1 Months Ended | 12 Months Ended |  |  |  |
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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 |  |  |

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- Definition Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(9)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
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- Definition The price per share of the conversion feature embedded in the debt instrument. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-5 + Details
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- Definition Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-3 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(5)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-7 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-6 + Details
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- Definition Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature. + References No definition available. + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
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