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Acquisitions and Assets Held for Sale - Narrative (Details) - USD ($) |  |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Feb. 02, 2021 | Jan. 19, 2021 | Jan. 31, 2022 | Oct. 31, 2021 | Oct. 31, 2020 | Oct. 31, 2019 | Feb. 01, 2021
Business Acquisition [Line Items] |  |  |  |  |  |  |
Goodwill |  |  |  | $ 2,574,000,000 | $ 2,447,300,000 | $ 2,428,900,000 |
Contingent consideration, change in fair value |  |  |  | 66,100,000 | $ 0 | $ 0 |
Equity Interest In Wholly-Owned Subsidiary | Disposal Group, Held-for-sale, Not Discontinued Operations |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Percentage of voting interests sold | 50.00% |  |  |  |  |  |
Ownership interest retained after sale of business | 50.00% |  |  |  |  |  |
Asset impairment |  |  |  | 0 |  |  |
Privately-Held Medical Device Company, Developed Mara Water Vapor Ablation System |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | $ 0
Privately-Held Medical Device Company, Spectacle Lenses |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Equity investment gain realized before acquisition of remaining equity interest |  | $ 11,500,000 |  |  |  |  |
Payments to acquire business |  | 40,900,000 |  |  |  |  |
Contingent consideration |  | 37,900,000 |  |  |  |  |
Contingent consideration paid |  |  |  | 0 |  |  |
Contingent consideration, change in fair value |  |  |  | $ 56,800,000 |  |  |
Privately-Held Medical Device Company, Spectacle Lenses, Portion Attributable To Former Equity Interest Owners |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Undiscounted range of the contingent consideration, minimum |  | 0 |  |  |  |  |
Undiscounted range of the contingent consideration, maximum |  | 139,100,000 |  |  |  |  |
Contingent consideration |  | $ 30,200,000 |  |  |  |  |
Generate Life Sciences | Subsequent Event | Forecast |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Payments to acquire business |  |  | $ 1,605,000,000 |  |  |  |

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