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           Property, Plant and Equipment, Schedule of Significant Acquisitions and Disposals (Details) 
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        6 Months Ended | 
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           May 31, 2014
 
          Y 
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| 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 | 
| X | ||||||||||
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- Definition 
          Plant And Equipment Property, Plant And Equipment, Schedule Of Significant Acquisitions And Disposals 1 No definition available. 
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- Definition 
          Plant And Equipment Property, Plant And Equipment, Schedule Of Significant Acquisitions And Disposals 3 No definition available. 
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- Definition 
          Plant And Equipment Property, Plant And Equipment, Schedule Of Significant Acquisitions And Disposals 4 No definition available. 
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| X | ||||||||||
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- Definition 
          Plant And Equipment Property, Plant And Equipment, Schedule Of Significant Acquisitions And Disposals 2 No definition available. 
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