Business Segment Information - Schedule of Segment Information (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Apr. 30, 2026	Apr. 30, 2025	Apr. 30, 2026	Apr. 30, 2025
Segment Reporting Information [Line Items]
Total net sales	$ 1,081.5	$ 1,002.3	$ 2,105.6	$ 1,967.0
Operating Segments \| Coopervision Segment
Segment Reporting Information [Line Items]
Total net sales	723.5	669.6	1,418.6	1,315.7
Operating Segments \| Coopersurgical Segment
Segment Reporting Information [Line Items]
Total net sales	358.0	332.7	687.0	651.3
Operating Segments \| Toric and multifocal \| Coopervision Segment
Segment Reporting Information [Line Items]
Total net sales	364.9	328.4	716.1	647.8
Operating Segments \| Sphere, other \| Coopervision Segment
Segment Reporting Information [Line Items]
Total net sales	358.6	341.2	702.5	667.9
Operating Segments \| Office and surgical \| Coopersurgical Segment
Segment Reporting Information [Line Items]
Total net sales	214.2	205.8	416.6	404.7
Operating Segments \| Fertility \| Coopersurgical Segment
Segment Reporting Information [Line Items]
Total net sales	$ 143.8	$ 126.9	$ 270.4	$ 246.6

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details