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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, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2013	Apr. 30, 2012
Noncontrolling Interest [Line Items]
Equity earnings of affiliates	$ 0.2	$ 2.0	$ 0.3	$ 2.0
Principal balance of loan made to an entity deemed VIE	22.2		22.2
Outstanding amount of loan	16.3		16.3
Net income attributable to noncontrolling interests	$ (2.1)	$ 0.2	$ (3.4)	$ (0.9)
Minimum [Member]
Noncontrolling Interest [Line Items]
Percentage of investments in affiliates in which Company have noncontrolling interest			20.00%
Number of affiliates in which Company has equity interest			6

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- Definition

Investments in and advances to affiliates balance original principal amount

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Number of affiliates in which company has equity interest.

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Percentage of investments in affiliates in which company have non controlling interest.

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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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For investments which are quantified by principal amount, the principle balance held at close of period.

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Amount of Net Income (Loss) attributable to noncontrolling interest.

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