Equity Earnings of Unconsolidated Affiliates, Net of Tax and Net Income Attributable to Noncontrolling Interests - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Apr. 30, 2017 USD ($)	Apr. 30, 2016 USD ($)	Apr. 30, 2017 USD ($) affiliate	Apr. 30, 2016 USD ($)
Noncontrolling Interest [Abstract]
Percentage of investments in affiliates in which company have non controlling interest			20.00%
Number of affiliates in which company has equity interest (affiliate) | affiliate			2
Equity earnings (losses)	$ 0	$ 0	$ 0	$ 0
Dividends received from company's equity method affiliates	0	0	0	0
Net income attributable to noncontrolling interests	$ 3,900,000	$ 1,100,000	$ 6,500,000	$ 2,300,000