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Costa Concordia and Costa Allegra - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 3 Months Ended
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Feb. 29, 2012
Costa Concordia |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups [Line Items] |
Net carrying value of asset written-off | $ 515
Other charges recognized | 29
Insurance deductible for third party personal injury liability | 10
Percentage of aggregated short-term and long-term claims reserves relate to Costa Concordia accident | 65.00%
Costa Allegra |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups [Line Items] |
Net carrying value of asset written-off | $ 34

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