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Property, Plant and Equipment, Schedule of Significant Acquisitions and Disposals (Details) | 6 Months Ended
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May 31, 2013 Y
Plant And Equipment Property, Plant And Equipment, Schedule Of Significant Acquisitions And Disposals 1 | 30.00%
Plant And Equipment Property, Plant And Equipment, Schedule Of Significant Acquisitions And Disposals 2 | 30.00%
Plant And Equipment Property, Plant And Equipment, Schedule Of Significant Acquisitions And Disposals 3 | 20.00%
Plant And Equipment Property, Plant And Equipment, Schedule Of Significant Acquisitions And Disposals 4 | 5

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