Schedule II (Details) - SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance Beginning of Year	$ 60.1	$ 51.8	$ 45.3
Additions	2.6	13.3	8.8
Reductions/ Charges	(42.0)	(5.0)	(2.3)
Balance at End of Year	$ 20.7	$ 60.1	$ 51.8