Business Segment Information - Schedule of Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2022	Apr. 30, 2021
Segment Reporting Information [Line Items]
Total net sales	$ 829.8	$ 719.5	$ 1,616.9	$ 1,400.0
Total operating income	132.7	143.2	263.6	276.6
Interest expense	10.8	6.1	17.4	12.5
Other (income) expense, net	(41.8)	0.7	(39.4)	(11.8)
Income before income taxes	163.7	136.4	285.6	275.9
Operating Segments | CooperVision
Segment Reporting Information [Line Items]
Total net sales	553.8	522.6	1,115.2	1,029.6
Total operating income	135.4	131.7	262.8	259.2
Operating Segments | CooperSurgical
Segment Reporting Information [Line Items]
Total net sales	276.0	196.9	501.7	370.4
Total operating income	10.9	23.1	26.6	40.6
Operating Segments | Toric lens | CooperVision
Segment Reporting Information [Line Items]
Total net sales	185.6	172.8	367.8	335.1
Operating Segments | Multifocal lens | CooperVision
Segment Reporting Information [Line Items]
Total net sales	66.4	58.0	132.2	115.7
Operating Segments | Single-use sphere lens | CooperVision
Segment Reporting Information [Line Items]
Total net sales	161.1	144.5	328.1	290.5
Operating Segments | Non single-use sphere, other | CooperVision
Segment Reporting Information [Line Items]
Total net sales	140.7	147.3	287.1	288.3
Operating Segments | Office and surgical products | CooperSurgical
Segment Reporting Information [Line Items]
Total net sales	161.6	112.6	290.5	216.1
Operating Segments | Fertility | CooperSurgical
Segment Reporting Information [Line Items]
Total net sales	114.4	84.3	211.2	154.3
Corporate
Segment Reporting Information [Line Items]
Total operating income	$ (13.6)	$ (11.6)	$ (25.8)	$ (23.2)