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Segment Information - Summary of Customers Comprising 10% or More of Total Revenue (Details) - Customer Concentration Risk - Operating Revenues - United States
3 Months Ended
Feb. 28, 2017
Feb. 29, 2016
Southern California Edison    
Segment Reporting Information [Line Items]    
Total operating revenues percentage 29.50% 44.20%
Southern California Public Power Authority    
Segment Reporting Information [Line Items]    
Total operating revenues percentage 10.70%  
First Solar    
Segment Reporting Information [Line Items]    
Total operating revenues percentage 12.80% 18.10%