Acquisitions and Assets Held for Sale - Carrying Amounts of the Assets and Liabilities Held for Sale (Details) - USD ($) $ in Millions	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2019
ASSETS
Cash	$ 0.3	$ 0.0	$ 0.0
Disposal Group, Held-for-sale, Not Discontinued Operations | Equity Interest In Wholly-Owned Subsidiary
ASSETS
Cash	0.3
Goodwill	23.2
Other intangibles, net	83.6
Deferred tax assets	(19.9)
Other assets	2.0
Total assets held-for-sale	89.2
LIABILITIES
Total liabilities held-for-sale	$ 1.7