Related Parties - EPC Agreements (Details) - Affiliated Entity	12 Months Ended
	Nov. 30, 2017
Related Party Transaction [Line Items]
Period of warranty for power and product	25 years
Minimum
Related Party Transaction [Line Items]
Period of warranty for materials, construction, fabrication and workmanship	1 year
Maximum
Related Party Transaction [Line Items]
Period of warranty for materials, construction, fabrication and workmanship	10 years