Equity Earnings of Unconsolidated Affiliates, Net of Tax and Net Income Attributable to Noncontrolling Interests (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2012	Apr. 30, 2011	Apr. 30, 2012 Affiliates	Apr. 30, 2011
Equity Earnings of Unconsolidated Affiliates, Net of Tax and Net Income Attributable to Noncontrolling Interests (Textual) [Abstract]
Percentage of investments in affiliates in which company have non controlling interest			20 percent or more
Equity earnings of unconsolidated affiliates, net of tax	$ 2.0	$ 0	$ 2.0	$ 0.5
Dividends received from company's equity method affiliates	0	0	0	0
Principal balance of loan made to an entity deemed VIE	22.2		22.2
Outstanding amount of loan	18.8		18.8
Net (income) loss attributable to noncontrolling interests	$ 0.6	$ 0.3	$ (0.1)	$ 0.6
Number of affiliates in which company has equity interest			7