Segment Data - Narrative (Details)	12 Months Ended
	Oct. 31, 2019 customer segment	Oct. 31, 2018 customer	Oct. 31, 2017 customer
Segment Reporting Information [Line Items]
Number of operating segments | segment	10
Number of reportable business segments | segment	2
Single customer | Customer concentration | Revenue from Contract with Customer
Segment Reporting Information [Line Items]
Number of customers | customer	0	0
Percentage of consolidated gross sales accounted for by one customer (as a percent)	10.00%	10.00%
Single customer | Customer concentration | Revenue from Contract with Customer | Residential
Segment Reporting Information [Line Items]
Number of customers | customer			1
Percentage of consolidated gross sales accounted for by one customer (as a percent)			10.00%