Schedule II - Consolidated Valuation and Qualifying Accounts and Reserves - (Details) - Allowance for doubtful accounts - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 6.8	$ 4.2	$ 8.9
Charged to Costs and Expenses	1.3	0.6	0.4
Charged to Other Accounts	1.3	2.0	(4.6)
Deductions	0.0	0.0	(0.5)
Balance at End of Period	$ 9.4	$ 6.8	$ 4.2