Acquisitions (Schedule of components of acquisitions, net of cash acquired) (Details) - USD ($) $ in Millions	12 Months Ended
Jul. 31, 2023	Oct. 31, 2023
Business Acquisition
Goodwill	$ 481.1	$ 469.3
Isolere And Univercells
Business Acquisition
Intangible assets	97.0
Tangible assets, net	10.4
Assets acquired, net	107.4
Goodwill	124.0
Aggregate purchase price	231.4
Add deferred tax asset	7.0
Less deferred tax liability	(24.0)
Less cash acquired	(4.8)
Acquisitions, net of cash acquired	209.6
Technology \| Isolere And Univercells
Business Acquisition
Intangible assets	84.9
Trademarks and tradenames \| Isolere And Univercells
Business Acquisition
Intangible assets	8.2
Customer relationships \| Isolere And Univercells
Business Acquisition
Intangible assets	1.2
Non-competition agreements \| Isolere And Univercells
Business Acquisition
Intangible assets	$ 2.7

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Tangible Assets

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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