Income Taxes (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012
Reconciliation of the Total Amounts of Unrecognized Tax Benefits
Beginning of year balance	$ 33.6	$ 32.5	$ 30.0
Increases to tax positions taken during the current year	12.1	11.8	12.0
Increases to tax positions taken during prior years	0.7	1.1	0.8
Decreases to tax positions taken during prior years	(7.0)	(7.8)	(6.6)
Decreases due to lapse of statute of limitations	(3.2)	(4.0)	(3.6)
Foreign exchange			(0.1)
End of year balance	36.2	33.6	32.5
Unrecognized tax benefits affecting effective tax rate if recognized	20.2
Total amount of expense from interest and penalties	1.7	0.4	0.2
Accrued interest and penalties on income tax	$ 14.4	$ 12.8