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Debt - Additional Information (Detail) In Millions, unless otherwise specified |  |  |  | 1 Months Ended |  | 1 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
May 31, 2011 USD ($) | Nov. 30, 2010 USD ($) | May 31, 2011 Unsecured Debt | May 31, 2011 Unsecured Debt Commercial Paper USD ($) | May 31, 2011 Unsecured Debt Euro Denominated Bank Loans USD ($) | Apr. 30, 2011 Unsecured Euro Denominated Export Credit Facility USD ($) | Mar. 31, 2011 Unsecured Euro Denominated Export Credit Facility USD ($) | May 31, 2011 Revolving Credit Facility USD ($) Year | May 31, 2011 Revolving Credit Facility U.S Dollar Denominated Debt USD ($) | May 31, 2011 Revolving Credit Facility U.S Dollar Denominated Debt Termination USD ($) | May 31, 2011 Revolving Credit Facility Euro Denominated EUR (€) | May 31, 2011 Revolving Credit Facility Euro Denominated Termination EUR (€) | May 31, 2011 Revolving Credit Facility Sterling Denominated Debt GBP (£) | May 31, 2011 Revolving Credit Facility Sterling Denominated Debt Termination GBP (£) | May 31, 2011 Revolving Credit Facility Utilization of One Third of Available Line of Credit Facility | May 31, 2011 Revolving Credit Facility Utilization of Two Third of Available Line of Credit Facility | May 31, 2011 Revolving Credit Facility Termination USD ($) | May 31, 2011 Unsecured Floating Rate Export Credit Facility Repayment of Debt USD ($) | May 31, 2011 Unsecured Floating Rate Euro-Denominated Bank Loan Repayment of Debt USD ($) | Jan. 31, 2011 Fixed Rate Export Credit Facilities USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short term borrowings | $ 274 | $ 740 |  | $ 267 | $ 7 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate Weighted Average Interest Rate |  |  | 0.30% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured Long-Term Debt |  |  |  |  |  | 583 | 407 | 2,500 | 1,600 | 1,200 | 450 | 400 | 150 | 200 |  |  | 2,000 |  |  | 313
Subsequent Event, Date |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Jun. 30, 2011 | Jun. 30, 2011 |
Unsecured debt interest rate terms |  |  |  |  |  | LIBOR plus a margin of 160 bps and is due in semi-annual installments through April 2023. | EURIBOR plus a margin of 20 basis points (“bps”) and is due in semi-annual installments through March 2023. | LIBOR/EURIBOR plus a margin of 65 bps. The margin will vary based on changes to Carnival Corporation’s and Carnival plc’s long-term credit rating. |  |  |  |  |  |  |  |  |  |  |  |
Payments of unsecured debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 300 | 140 |
Debt Instrument, Maturity Years |  |  |  |  |  |  |  | 5 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  | 1.60% | 0.20% | 0.65% |  |  |  |  |  |  |  |  |  |  |  |
Commitment fee on undrawn facility |  |  |  |  |  |  |  | 35.00% |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument Maturity Period |  |  |  |  |  | April 2023 | March 2023 |  |  |  |  |  |  |  |  |  |  | Through 2022 | Through 2014 |
Other revolving credit facilities cancelled | 212 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Utilization fee on the total amount outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.15% | 0.30% |  |  |  |
Amount available under the facility |  |  |  |  |  |  |  | $ 2,400 |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The cash outflow to repay long-term debt that is not secured by collateral. Excludes repayments of tax exempt unsecured debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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