Segment Information - Summary of Customers Comprising 10% or More of Total Revenue (Details) - Customer Concentration Risk - Operating Revenues - United States	3 Months Ended		6 Months Ended
	May 31, 2017	May 31, 2016	May 31, 2017	May 31, 2016
Southern California Edison
Segment Reporting Information [Line Items]
Total operating revenues percentage	42.90%	49.60%	37.90%	47.80%
Southern California Public Power Authority
Segment Reporting Information [Line Items]
Total operating revenues percentage	13.60%		12.50%
First Solar
Segment Reporting Information [Line Items]
Total operating revenues percentage				12.50%