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GOODWILL AND OTHER INTANGIBLE ASSETS - Summary of Carrying Amount of Net Other Intangible Assets by Class (Details) - USD ($) $ in Millions | Jul. 31, 2020 | Oct. 31, 2019
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Finite Lived And Indefinite Lived Intangible Assets [Line Items] |  |
Gross Intangible Assets | $ 951.5 | $ 954.9
Accumulated Amortization | 225.3 | 178.4
Net Intangible Assets | 726.2 | 776.5
Net Intangible Assets | 726.2 | 776.5
Customer relationships |  |
Finite Lived And Indefinite Lived Intangible Assets [Line Items] |  |
Gross Intangible Assets | 887.4 | 890.6
Accumulated Amortization | 191.2 | 150.3
Net Intangible Assets | 696.2 | 740.3
Trademarks, patents and trade names |  |
Finite Lived And Indefinite Lived Intangible Assets [Line Items] |  |
Gross Intangible Assets | 27.2 | 27.0
Accumulated Amortization | 13.5 | 9.3
Net Intangible Assets | 13.7 | 17.7
Non-compete agreements |  |
Finite Lived And Indefinite Lived Intangible Assets [Line Items] |  |
Gross Intangible Assets | 2.3 | 2.3
Accumulated Amortization | 1.9 | 0.7
Net Intangible Assets | 0.4 | 1.6
Other |  |
Finite Lived And Indefinite Lived Intangible Assets [Line Items] |  |
Gross Intangible Assets | 21.1 | 21.9
Accumulated Amortization | 18.7 | 18.1
Net Intangible Assets | 2.4 | 3.8
Trademarks, patents and trade names |  |
Finite Lived And Indefinite Lived Intangible Assets [Line Items] |  |
Trademarks and patents | 13.5 | 13.1
Accumulated Amortization | $ 0.0 | $ 0.0

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