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GOODWILL AND OTHER INTANGIBLE ASSETS - Summary of Carrying Amount of Net Other Intangible Assets by Class (Details) - USD ($) $ in Millions | Apr. 30, 2020 | Oct. 31, 2019
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Finite Lived And Indefinite Lived Intangible Assets [Line Items] |  |
Gross Intangible Assets | $ 947.4 | $ 954.9
Accumulated Amortization | 207.2 | 178.4
Net Intangible Assets | 740.2 | 776.5
Net Intangible Assets | 740.2 | 776.5
Customer relationships |  |
Finite Lived And Indefinite Lived Intangible Assets [Line Items] |  |
Gross Intangible Assets | 884.1 | 890.6
Accumulated Amortization | 174.9 | 150.3
Net Intangible Assets | 709.2 | 740.3
Trademarks, patents and trade names |  |
Finite Lived And Indefinite Lived Intangible Assets [Line Items] |  |
Gross Intangible Assets | 26.7 | 27.0
Accumulated Amortization | 12.0 | 9.3
Net Intangible Assets | 14.7 | 17.7
Non-compete agreements |  |
Finite Lived And Indefinite Lived Intangible Assets [Line Items] |  |
Gross Intangible Assets | 2.2 | 2.3
Accumulated Amortization | 1.5 | 0.7
Net Intangible Assets | 0.7 | 1.6
Other |  |
Finite Lived And Indefinite Lived Intangible Assets [Line Items] |  |
Gross Intangible Assets | 21.4 | 21.9
Accumulated Amortization | 18.8 | 18.1
Net Intangible Assets | 2.6 | 3.8
Trademarks, patents and trade names |  |
Finite Lived And Indefinite Lived Intangible Assets [Line Items] |  |
Trademarks and patents | 13.0 | 13.1
Accumulated Amortization | $ 0.0 | $ 0.0

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