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Income and Other Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Nov. 30, 2011 | Nov. 30, 2010 | Nov. 30, 2009
Income Taxes [Line Items] |  |  |
Income tax benefit recognized by AIDA and Costa from an Italian investment incentive related to certain of their newbuild expenditures |  | $ 1 | $ 16
Measurement of tax benefit, minimum likelihood of the largest amount being realized upon ultimate resolution | 50.00% |  |
ITALY |  |  |
Income Taxes [Line Items] |  |  |
Effective tax rate | 6.00% |  |
PORTUGAL |  |  |
Income Taxes [Line Items] |  |  |
Effective tax rate | 3.00% |  |
Effective tax rate in 2020 | 5.00% |  |
AIDA And Costa Newbuild |  |  |
Income Taxes [Line Items] |  |  |
Income tax benefit recognized by AIDA and Costa from an Italian investment incentive related to certain of their newbuild expenditures |  | $ 30 |

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- Definition The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 45 -Subparagraph a, b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 + Details
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