Business Segment Information - Schedule of Segment Information (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2020	Jan. 31, 2019
Segment Reporting Information [Line Items]
Total net sales	$ 646.2	$ 628.1
Total operating income	111.1	110.9
Interest expense	11.6	18.2
Other expense (income), net	2.1	(1.1)
Income before income taxes	97.4	93.8
CooperVision
Segment Reporting Information [Line Items]
Total net sales	485.2	470.1
CooperSurgical
Segment Reporting Information [Line Items]
Total net sales	161.0	158.0
Toric lens | CooperVision
Segment Reporting Information [Line Items]
Total net sales	155.1	146.0
Multifocal lens | CooperVision
Segment Reporting Information [Line Items]
Total net sales	51.8	49.1
Single-use sphere lens | CooperVision
Segment Reporting Information [Line Items]
Total net sales	138.1	132.1
Non single-use sphere, other | CooperVision
Segment Reporting Information [Line Items]
Total net sales	140.2	142.9
Office and surgical products | CooperSurgical
Segment Reporting Information [Line Items]
Total net sales	98.5	95.7
Fertility | CooperSurgical
Segment Reporting Information [Line Items]
Total net sales	62.5	62.3
Operating Segments | CooperVision
Segment Reporting Information [Line Items]
Total operating income	122.9	116.3
Operating Segments | CooperSurgical
Segment Reporting Information [Line Items]
Total operating income	1.7	7.2
Corporate
Segment Reporting Information [Line Items]
Total operating income	$ (13.5)	$ (12.6)