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Income and Other Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Nov. 30, 2012 | Nov. 30, 2010
Income Tax [Line Items] |  |
Income tax benefit recognized by AIDA and Costa from an Italian investment incentive related to certain of their newbuild expenditures | $ 4 | $ 1
Measurement of tax benefit, minimum likelihood of the largest amount being realized upon ultimate resolution | 50.00% |
AIDA and Costa Italian investment incentive |  |
Income Tax [Line Items] |  |
Income tax benefit recognized by AIDA and Costa from an Italian investment incentive related to certain of their newbuild expenditures |  | $ (30)
ITALY |  |
Income Tax [Line Items] |  |
Tax rate election period maximum | 2014 |
Additional tax rate election period beginning 2015 | 10 years |
Effective tax rate | 6.00% |
PORTUGAL | Maximum |  |
Income Tax [Line Items] |  |
Effective tax rate through 2020 | 5.00% |

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