Business Segment Information - Business Segment Net Sales (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2019
Segment Reporting Information [Line Items]
Net sales	$ 2,922.5	$ 2,430.9	$ 2,653.4
CooperVision
Segment Reporting Information [Line Items]
Net sales	2,152.0	1,843.0	1,972.9
CooperSurgical
Segment Reporting Information [Line Items]
Net sales	770.5	587.9	680.5
Toric lens | CooperVision
Segment Reporting Information [Line Items]
Net sales	697.5	598.2	620.0
Multifocal lens | CooperVision
Segment Reporting Information [Line Items]
Net sales	238.6	197.0	202.9
Single-use sphere lens | CooperVision
Segment Reporting Information [Line Items]
Net sales	616.3	529.0	568.2
Non single-use sphere, other | CooperVision
Segment Reporting Information [Line Items]
Net sales	599.6	518.8	581.8
Office and surgical products | CooperSurgical
Segment Reporting Information [Line Items]
Net sales	451.3	358.8	422.4
Fertility | CooperSurgical
Segment Reporting Information [Line Items]
Net sales	$ 319.2	$ 229.1	$ 258.1