Business Segment Information - Schedule of Business Segment Net Sales (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2023
Segment Reporting Information [Line Items]
Net sales	$ 4,092.4	$ 3,895.4	$ 3,593.2
Coopervision Segment | Operating Segments
Segment Reporting Information [Line Items]
Net sales	2,743.8	2,609.4	2,423.7
Coopersurgical Segment | Operating Segments
Segment Reporting Information [Line Items]
Net sales	1,348.6	1,286.0	1,169.5
Toric and multifocal | Coopervision Segment | Operating Segments
Segment Reporting Information [Line Items]
Net sales	1,351.3	1,257.2	1,134.4
Sphere, other | Coopervision Segment | Operating Segments
Segment Reporting Information [Line Items]
Net sales	1,392.5	1,352.2	1,289.3
Office and surgical | Coopersurgical Segment | Operating Segments
Segment Reporting Information [Line Items]
Net sales	824.0	774.7	689.5
Fertility | Coopersurgical Segment | Operating Segments
Segment Reporting Information [Line Items]
Net sales	$ 524.6	$ 511.3	$ 480.0