Other Current Assets - Schedule of Other Current Assets (Parenthetical) (Details)	3 Months Ended
	Jan. 31, 2019 USD ($)
Clearway Energy [Member]
Other Current Assets [Line Items]
Line of credit facility, maximum borrowing capacity	$ 40,000,000
Line of credit facility, expiration period	5 years
Generate Lending, LLC [Member]
Other Current Assets [Line Items]
Line of credit facility, maximum borrowing capacity	$ 100,000,000
Line of credit facility, expiration period	1 year