Acquisitions and Assets Held for Sale - Total Purchase Consideration for Business and Asset Acquisitions (Details) - USD ($) $ in Millions	Jan. 31, 2022	Oct. 31, 2021
Schedule Of Business Acquisitions And Asset Acquisition, By Acquisition [Line Items]
Goodwill	$ 3,835.7	$ 2,574.0
Series Of Individually Immaterial Business Acquisitions And Asset Acquisitions
Schedule Of Business Acquisitions And Asset Acquisition, By Acquisition [Line Items]
Total identifiable intangible assets	615.8	208.0
Goodwill	1,288.2	91.6
Net tangible liabilities	(238.3)	(10.8)
Fair value of contingent consideration	0.0	(39.1)
Total closing purchase price	1,665.7	249.7
Series Of Individually Immaterial Business Acquisitions And Asset Acquisitions | Technology
Schedule Of Business Acquisitions And Asset Acquisition, By Acquisition [Line Items]
Total identifiable intangible assets	1.8	178.6
Series Of Individually Immaterial Business Acquisitions And Asset Acquisitions | In-Process Research & Development (IPR&D)
Schedule Of Business Acquisitions And Asset Acquisition, By Acquisition [Line Items]
Total identifiable intangible assets	0.0	20.0
Series Of Individually Immaterial Business Acquisitions And Asset Acquisitions | Customer relationships
Schedule Of Business Acquisitions And Asset Acquisition, By Acquisition [Line Items]
Total identifiable intangible assets	472.0	7.5
Series Of Individually Immaterial Business Acquisitions And Asset Acquisitions | Trademarks
Schedule Of Business Acquisitions And Asset Acquisition, By Acquisition [Line Items]
Total identifiable intangible assets	142.0	1.3
Series Of Individually Immaterial Business Acquisitions And Asset Acquisitions | Other
Schedule Of Business Acquisitions And Asset Acquisition, By Acquisition [Line Items]
Total identifiable intangible assets	$ 0.0	$ 0.6