Acquisitions and Assets Held for Sale - Carrying Amounts of the Assets and Liabilities Held for Sale (Details) - Disposal Group, Held-for-sale, Not Discontinued Operations - Equity Interest In Wholly-Owned Subsidiary - USD ($) $ in Millions	Jan. 31, 2022	Oct. 31, 2021	Jan. 31, 2021
ASSETS
Cash	$ 0.3	$ 0.3
Goodwill	20.2	23.2
Other intangibles, net	83.6	83.6
Deferred tax assets	0.0	(19.9)
Other assets	2.7	2.0
Total assets held-for-sale	106.8	89.2
LIABILITIES
Deferred tax liabilities	16.8		$ 0.0
Other liabilities	2.2	1.7
Total liabilities held-for-sale	$ 19.0	$ 1.7