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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Nov. 30, 2015
Accounting Policies [Abstract]  
Depreciation and Amortization Expense Computation
Property and equipment are stated at cost. Depreciation and amortization were computed using the straight-line method over our estimates of useful lives and residual values, as a percentage of original cost, as follows:
 
Years
 
Residual
Values
Ships
30
 
15%
Ship improvements
Shorter of remaining ship life or useful life (3-28)
 
  0%
Buildings and improvements
10-35
 
0% or 10%
Computer hardware and software
3-10
 
0% or 10%
Transportation equipment and other
3-20
 
0% or 10%
Leasehold improvements, including port facilities
Shorter of lease term or related asset life (3-30)