GOODWILL AND OTHER INTANGIBLE ASSETS - Summary of Carrying Amount of Net Other Intangible Assets by Class (Details) - USD ($) $ in Millions	Apr. 30, 2019	Oct. 31, 2018
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible Assets	$ 922.9	$ 207.6
Accumulated Amortization	144.1	127.0
Net Intangible Assets	778.8	80.6
Net Intangible Assets	778.8	80.6
Customer relationships
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible Assets	861.0	162.2
Accumulated Amortization	120.6	105.8
Net Intangible Assets	740.4	56.4
Trademarks, patents and trade names
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible Assets	25.8	10.9
Accumulated Amortization	6.4	5.1
Net Intangible Assets	19.4	5.8
Trademarks, patents and trade names
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible Assets	0.9
Accumulated Amortization	0.1
Net Intangible Assets	0.8
Total
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible Assets	22.0	21.2
Accumulated Amortization	17.0	16.1
Net Intangible Assets	5.0	5.1
Trademarks, patents and trade names
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Indefinite lived intangible assets	$ 13.2	$ 13.3