Business Segment Information - Schedule of Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022
Segment Reporting Information [Line Items]
Total net sales	$ 930.2	$ 843.4	$ 2,666.1	$ 2,460.3
Total operating income	151.6	140.6	397.4	404.1
Interest expense	26.8	17.1	79.0	34.5
Other expense, net	6.0	6.2	11.9	(33.3)
Income before income taxes	118.8	117.3	306.5	402.9
Operating Segments | CooperVision
Segment Reporting Information [Line Items]
Total net sales	630.2	566.3	1,800.8	1,681.5
Total operating income	151.7	124.5	449.7	387.3
Operating Segments | CooperSurgical
Segment Reporting Information [Line Items]
Total net sales	300.0	277.1	865.3	778.8
Total operating income	18.8	30.4	0.3	56.9
Operating Segments | Toric lens | CooperVision
Segment Reporting Information [Line Items]
Total net sales	215.7	185.9	611.8	553.7
Operating Segments | Multifocal lens | CooperVision
Segment Reporting Information [Line Items]
Total net sales	80.8	67.6	226.7	199.8
Operating Segments | Single-use sphere lens | CooperVision
Segment Reporting Information [Line Items]
Total net sales	187.5	163.8	521.2	491.9
Operating Segments | Non single-use sphere, other | CooperVision
Segment Reporting Information [Line Items]
Total net sales	146.2	149.0	441.1	436.1
Operating Segments | Office and surgical | CooperSurgical
Segment Reporting Information [Line Items]
Total net sales	178.4	165.4	506.6	455.9
Operating Segments | Fertility | CooperSurgical
Segment Reporting Information [Line Items]
Total net sales	121.6	111.7	358.7	322.9
Corporate
Segment Reporting Information [Line Items]
Total operating income	$ (18.9)	$ (14.3)	$ (52.6)	$ (40.1)