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