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Business Segment Information - Schedule of Net Sales to Unaffiliated Customers by Country of Domicile (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 30, 2020 | Apr. 30, 2019 | Apr. 30, 2020 | Apr. 30, 2019
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Total net sales | $ 524.9 | $ 654.3 | $ 1,171.1 | $ 1,282.4
United States |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Total net sales | 222.5 | 305.9 | 516.0 | 584.9
Europe |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Total net sales | 178.8 | 209.5 | 392.1 | 419.2
Rest of world |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Total net sales | $ 123.7 | $ 138.9 | $ 263.0 | $ 278.3

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