Financial Instruments and Fair Value Measurements - Summary of Quantitative about Significant Unobservable Inputs Used to Determine Fair Value of Impairment of Long-Lived Assets Held and Used (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2017	Apr. 30, 2016	Apr. 30, 2017	Apr. 30, 2016
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impairment of Long Lived Assets	$ 2.0	$ 1.7	$ 3.9	$ 40.8
Level 3
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impairment of Long Lived Assets			3.9	40.8
Level 3 | Broker Quote/ Indicative Bids
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impairment of Net Assets Held for Sale			3.6
Level 3 | Broker Quote/ Indicative Bids | Land and Building
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impairment of Net Assets Held for Sale				34.7
Level 3 | Sales Value
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impairment of Long Lived Assets			$ 0.3
Level 3 | Sales Value | Machinery and Equipment
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impairment of Long Lived Assets				$ 6.1