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Business Segment Information - Schedule of Identifiable Assets by Segment (Details) - USD ($) $ in Millions | Apr. 30, 2020 | Oct. 31, 2019
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Total Identifiable assets | $ 6,510.0 | $ 6,274.5
Operating Segments | CooperVision |  |
Segment Reporting Information [Line Items] |  |
Total Identifiable assets | 4,140.3 | 3,911.6
Operating Segments | CooperSurgical |  |
Segment Reporting Information [Line Items] |  |
Total Identifiable assets | 2,207.4 | 2,189.8
Corporate |  |
Segment Reporting Information [Line Items] |  |
Total Identifiable assets | $ 162.2 | $ 173.1

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