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, 2018	Feb. 28, 2017
Southern California Edison
Segment Reporting Information [Line Items]
Total operating revenues percentage	32.00%	29.50%
Southern California Public Power Authority
Segment Reporting Information [Line Items]
Total operating revenues percentage	12.60%	10.70%
Public Service Company of Colorado
Segment Reporting Information [Line Items]
Total operating revenues percentage	12.40%
First Solar
Segment Reporting Information [Line Items]
Total operating revenues percentage	11.70%	12.80%