Equity Earnings of Unconsolidated Affiliates, Net of Tax and Net Income Attributable to Noncontrolling Interests - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2014 Affiliates	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013
Noncontrolling Interest [Line Items]
Number of affiliates in which company has equity interest	4
Equity earnings of affiliates	$ 0.1	$ 0.2	$ 0.2	$ 0.3
Dividends received from company's equity method affiliates	0		0.2
Principal balance of loan made to an entity deemed VIE	22.2		22.2
Outstanding amount of loan	13.4		13.4
Net (income) loss attributable to noncontrolling interests	$ 1.3	$ (2.1)	$ 0.2	$ (3.4)
Minimum [Member]
Noncontrolling Interest [Line Items]
Percentage of investments in affiliates in which company have non controlling interest	20.00%