Other Employee Benefit Plans (Details)	12 Months Ended
	Oct. 31, 2013 Defined Contribution Pension Plan Canada CAD	Oct. 31, 2012 Defined Contribution Pension Plan Canada CAD	Oct. 31, 2011 Defined Contribution Pension Plan Canada CAD	Oct. 31, 2013 Defined Contribution Profit Sharing Plan USD ($)	Oct. 31, 2012 Defined Contribution Profit Sharing Plan USD ($)	Oct. 31, 2011 Defined Contribution Profit Sharing Plan USD ($)
Schedule of Defined Contribution Pension And Other Postretirement Plans Disclosure [Line Items]
Maximum total employee and employer contribution percentage	18.00%
Maximum total employee and employer contribution amount	24,270
Required employer contribution percent	1.00%
Maximum employer annual contribution amount per employee	3,000
Employer matching percentage for eligible employee contribution	50.00%			50.00%
Employer matching contributions	3,900,000	4,000,000	4,300,000	$ 4,000,000	$ 4,100,000	$ 3,900,000
Maximum employee contribution percentage of pre-tax compensation				60.00%
Percentage of employee contribution with 50% employer matching contribution				6.00%