Business Segment Information - Business Segment Net Sales (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Segment Reporting Information [Line Items]
Net sales	$ 3,593.2	$ 3,308.4	$ 2,922.5
CooperVision
Segment Reporting Information [Line Items]
Net sales	2,423.7	2,243.3	2,152.0
CooperSurgical
Segment Reporting Information [Line Items]
Net sales	1,169.5	1,065.1	770.5
Toric lens | CooperVision
Segment Reporting Information [Line Items]
Net sales	828.7	737.4	697.5
Multifocal lens | CooperVision
Segment Reporting Information [Line Items]
Net sales	305.7	264.4	238.6
Single-use sphere lens | CooperVision
Segment Reporting Information [Line Items]
Net sales	705.4	661.6	616.3
Non single-use sphere, other | CooperVision
Segment Reporting Information [Line Items]
Net sales	583.9	579.9	599.6
Office and surgical | CooperSurgical
Segment Reporting Information [Line Items]
Net sales	689.5	633.6	451.3
Fertility | CooperSurgical
Segment Reporting Information [Line Items]
Net sales	$ 480.0	$ 431.5	$ 319.2