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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Nov. 30, 2011
Depreciation and Amortization Expense Computation | Depreciation and amortization were computed using the straight-line method over our estimates of average useful lives and residual values, as a percentage of original cost, as follows:
|  | Years |  | Residual Values
Ships |  | 30 |  | 15%
Ship improvements |  | 3-28 |  | 0% or 15%
Buildings and improvements |  | 5-35 |  | 0-10%
Computer hardware and software |  | 3-7 |  | 0-10%
Transportation equipment and other |  | 2-20 |  | 0-10%
Leasehold improvements, including port facilities |  | Shorter of lease term or related asset life |  | -

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- Definition Depreciation and Amortization Expense Computation + References No definition available. + Details
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