Employee Benefit Plans - (Other Retirement Plans) - Additional Information (Detail)	12 Months Ended
	Oct. 31, 2014	Oct. 31, 2014 Other Retirement Plans USD ($)	Oct. 31, 2014 Other Retirement Plans CAD	Oct. 31, 2013 Other Retirement Plans USD ($)	Oct. 31, 2012 Other Retirement Plans USD ($)
Other Retirement Plans [Line Items]
Deferred percentage of annual cash base compensation	50.00%
Deferred percentage of variable cash compensation	100.00%
Employer contribution		$ 23,800,000		$ 21,300,000	$ 23,200,000
Maximum pretax annual company contribution match per employee		$ 1,500	4,000