Intangible Assets - Schedule of Goodwill (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Jan. 31, 2020	Oct. 31, 2019
Goodwill [Roll Forward]
Beginning balance	$ 2,428.9	$ 2,392.1
Net additions	4.0	36.1
Translation	13.0	0.7
Ending balance	2,445.9	2,428.9
CooperVision
Goodwill [Roll Forward]
Beginning balance	1,765.4	1,742.9
Net additions	0.0	14.1
Translation	13.3	8.4
Ending balance	1,778.7	1,765.4
CooperSurgical
Goodwill [Roll Forward]
Beginning balance	663.5	649.2
Net additions	4.0	22.0
Translation	(0.3)	(7.7)
Ending balance	$ 667.2	$ 663.5

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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-Publisher FASB
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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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