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Goodwill and Other Intangible Assets - Summary of Carrying Amount of Net Intangible Assets by Class (Details) - USD ($) $ in Millions | Oct. 31, 2019 | Oct. 31, 2018
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Finite Lived And Indefinite Lived Intangible Assets [Line Items] |  |
Indefinite lived intangible assets | $ 13.1 |
Gross Intangible Assets | 954.9 | $ 207.6
Accumulated Amortization | 178.4 | 127.0
Net Intangible Assets | 776.5 | 80.6
Customer relationships |  |
Finite Lived And Indefinite Lived Intangible Assets [Line Items] |  |
Gross Intangible Assets | 890.6 | 162.2
Accumulated Amortization | 150.3 | 105.8
Net Intangible Assets | 740.3 | 56.4
Trademarks and patents |  |
Finite Lived And Indefinite Lived Intangible Assets [Line Items] |  |
Gross Intangible Assets | 27.0 | 10.9
Accumulated Amortization | 9.3 | 5.1
Net Intangible Assets | 17.7 | 5.8
Non-compete agreements |  |
Finite Lived And Indefinite Lived Intangible Assets [Line Items] |  |
Gross Intangible Assets | 2.3 |
Accumulated Amortization | 0.7 |
Net Intangible Assets | 1.6 |
Other |  |
Finite Lived And Indefinite Lived Intangible Assets [Line Items] |  |
Gross Intangible Assets | 21.9 | 21.2
Accumulated Amortization | 18.1 | 16.1
Net Intangible Assets | 3.8 | 5.1
Trademarks and patents |  |
Finite Lived And Indefinite Lived Intangible Assets [Line Items] |  |
Indefinite lived intangible assets | $ 13.1 | $ 13.3

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