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Equity Earnings of Unconsolidated Affiliates, Net of Tax and Net Income Attributable to Noncontrolling Interests - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Equity Method Investments and Joint Ventures [Abstract]
Equity earnings of affiliates	$ 3.0	$ 2.0	$ 0.8
Dividends received from company's equity method affiliates	0.9	0.4	0.4
Net income attributable to noncontrolling interests	$ (20.1)	$ (16.5)	$ (0.6)

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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