Schedule II - Valuation and Qualifying Accounts for Allowance for Doubtful Accounts (Details) - SEC Schedule, 12-09, Allowance, Credit Loss - 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 Beginning of Year	$ 16.4	$ 19.0	$ 10.8
Additions Charged to Costs and Expenses	3.6	1.6	11.5
(Deductions) Recoveries/ Other	(9.8)	(4.2)	(3.3)
Balance at End of Year	$ 10.2	$ 16.4	$ 19.0