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Business Segment Information (Schedule of Long-Lived Assets By Country Of Domicile) (Details) - USD ($) $ in Millions | Apr. 30, 2017 | Oct. 31, 2016
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Total long-lived assets | $ 886.5 | $ 877.7
United States |  |
Segment Reporting Information [Line Items] |  |
Total long-lived assets | 463.4 | 464.1
Europe |  |
Segment Reporting Information [Line Items] |  |
Total long-lived assets | 342.2 | 334.4
Rest of world |  |
Segment Reporting Information [Line Items] |  |
Total long-lived assets | $ 80.9 | $ 79.2

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