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Summary of Significant Accounting Policies - Estimates of Average Useful Lives and Residual Values of Property and Equipment (Detail)
12 Months Ended
Nov. 30, 2016
Ships  
Property, Plant and Equipment [Line Items]  
Average useful lives of property and equipment 30 years
Residual value as a percentage of original cost 15.00%
Ship improvements  
Property, Plant and Equipment [Line Items]  
Residual value as a percentage of original cost 0.00%
Ship improvements | Minimum  
Property, Plant and Equipment [Line Items]  
Average useful lives of property and equipment 3 years
Ship improvements | Maximum  
Property, Plant and Equipment [Line Items]  
Average useful lives of property and equipment 30 years
Buildings and improvements  
Property, Plant and Equipment [Line Items]  
Residual value as a percentage of original cost, lower limit 0.00%
Residual value as a percentage of original cost, upper limit 10.00%
Buildings and improvements | Minimum  
Property, Plant and Equipment [Line Items]  
Average useful lives of property and equipment 10 years
Buildings and improvements | Maximum  
Property, Plant and Equipment [Line Items]  
Average useful lives of property and equipment 40 years
Computer hardware and software  
Property, Plant and Equipment [Line Items]  
Residual value as a percentage of original cost, lower limit 0.00%
Residual value as a percentage of original cost, upper limit 10.00%
Computer hardware and software | Minimum  
Property, Plant and Equipment [Line Items]  
Average useful lives of property and equipment 3 years
Computer hardware and software | Maximum  
Property, Plant and Equipment [Line Items]  
Average useful lives of property and equipment 12 years
Transportation equipment and other  
Property, Plant and Equipment [Line Items]  
Residual value as a percentage of original cost, lower limit 0.00%
Residual value as a percentage of original cost, upper limit 10.00%
Transportation equipment and other | Minimum  
Property, Plant and Equipment [Line Items]  
Average useful lives of property and equipment 3 years
Transportation equipment and other | Maximum  
Property, Plant and Equipment [Line Items]  
Average useful lives of property and equipment 20 years
Leasehold improvements, including port facilities  
Property, Plant and Equipment [Line Items]  
Residual value as a percentage of original cost 0.00%
Leasehold improvements, including port facilities | Minimum  
Property, Plant and Equipment [Line Items]  
Average useful lives of property and equipment 3 years
Leasehold improvements, including port facilities | Maximum  
Property, Plant and Equipment [Line Items]  
Average useful lives of property and equipment 30 years