Business Segment Information - Business Segment Information (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2020
Segment Reporting Information [Line Items]
Net sales	$ 3,308.4	$ 2,922.5	$ 2,430.9
Operating income (loss)	507.6	505.8	311.8
Interest expense	57.3	23.1	36.8
Other expense (income), net	(25.0)	(8.8)	8.5
Income before income taxes	475.3	491.5	266.5
Identifiable assets	11,492.3	9,606.2	6,737.5
Depreciation expense	166.6	163.2	149.9
Amortization expense	179.5	146.1	137.2
Capital expenditures	242.0	214.4	310.4
CooperVision
Segment Reporting Information [Line Items]
Net sales	2,243.3	2,152.0	1,843.0
CooperSurgical
Segment Reporting Information [Line Items]
Net sales	1,065.1	770.5	587.9
Corporate
Segment Reporting Information [Line Items]
Net sales	0.0	0.0	0.0
Operating income (loss)	(53.8)	(47.3)	(49.2)
Identifiable assets	305.6	244.7	207.4
Depreciation expense	0.0	0.0	0.0
Amortization expense	0.0	0.0	0.0
Capital expenditures	0.0	0.0	0.0
Operating Segments | CooperVision
Segment Reporting Information [Line Items]
Net sales	2,243.3	2,152.0	1,843.0
Operating income (loss)	494.3	481.3	375.7
Identifiable assets	6,778.9	6,965.9	4,236.3
Depreciation expense	144.5	148.3	138.2
Amortization expense	32.3	35.7	32.4
Capital expenditures	223.0	190.0	260.3
Operating Segments | CooperSurgical
Segment Reporting Information [Line Items]
Net sales	1,065.1	770.5	587.9
Operating income (loss)	67.1	71.8	(14.7)
Identifiable assets	4,407.8	2,395.6	2,293.8
Depreciation expense	22.1	14.9	11.7
Amortization expense	147.2	110.4	104.8
Capital expenditures	$ 19.0	$ 24.4	$ 50.1