Income Taxes (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010
Reconciliation of the Total Amounts of Unrecognized Tax Benefits
Beginning of year balance	$ 30.0	$ 30.3	$ 38.5
Increases to tax positions taken during the current year	12.0	10.6	8.9
Increases to tax positions taken during prior years	0.8	5.9	0.4
Decreases to tax positions taken during prior years	(6.6)	(14.7)	(14.4)
Decreases due to lapse of statute of limitations	(3.6)	(2.1)	(1.4)
Settlements		(0.1)	(1.5)
Foreign exchange	(0.1)	0.1	(0.2)
End of year balance	32.5	30.0	30.3
Unrecognized tax benefits affecting effective tax rate if recognized	17.3
Total amount of expense (credit) from interest and penalties	0.2	3.8	(1.6)
Reversals of interest and penalties due to audit settlements			2.3
Accrued interest and penalties on income tax	$ 12.4	$ 12.5