Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of assets acquired at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Acquisitions (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
Acquisitions (Details) - USD ($) $ in Millions	Nov. 01, 2017	Jan. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
Business Acquisition [Line Items]
Goodwill		$ 2,449.3	$ 2,392.1	$ 2,354.8
Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Business combination, recognized identifiable assets acquired and liabilities assumed, finite-lived intangibles		27.1	1,189.6
Net tangible assets		1.4	59.6
Total purchase consideration		64.3	1,319.8
Goodwill		35.8	70.6
Paragard
Business Acquisition [Line Items]
Property, plant and equipment	$ 2.0
Inventory	47.3
Other assets	9.4
Total assets acquired	1,121.8
Less: liabilities assumed	16.4
Net tangible assets	1,105.4
Total purchase consideration	1,100.0
Inventory step up	45.4
Technology \| Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Business combination, recognized identifiable assets acquired and liabilities assumed, finite-lived intangibles		9.9	0.0
Customer relationships \| Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Business combination, recognized identifiable assets acquired and liabilities assumed, finite-lived intangibles		7.5	23.5
Trademarks \| Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Business combination, recognized identifiable assets acquired and liabilities assumed, finite-lived intangibles		9.7	100.0
Composite intangible asset \| Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Business combination, recognized identifiable assets acquired and liabilities assumed, finite-lived intangibles		0.0	1,061.9
Composite intangible asset \| Paragard
Business Acquisition [Line Items]
Business combination, recognized identifiable assets acquired and liabilities assumed, finite-lived intangibles	$ 1,061.9
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	15 years
Other \| Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Business combination, recognized identifiable assets acquired and liabilities assumed, finite-lived intangibles		$ 0.0	$ 4.2
Assembled Workforce \| Paragard
Business Acquisition [Line Items]
Business combination, recognized identifiable assets acquired and liabilities assumed, finite-lived intangibles	$ 1.2
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years