Employee Benefit Plans (Deferred Plan Assets And Liabilities) (Details)	12 Months Ended
	Oct. 31, 2011	Oct. 31, 2011 Deferred Plan [Member] USD ($)		Oct. 31, 2010 Deferred Plan [Member] USD ($)		Oct. 31, 2009 Deferred Plan [Member] USD ($)	Oct. 31, 2011 Other Retirement Plans [Member] USD ($)	Oct. 31, 2010 Other Retirement Plans [Member] USD ($)	Oct. 31, 2009 Other Retirement Plans [Member] USD ($)	Oct. 31, 2011 Maximum [Member] Other Retirement Plans [Member] USD ($)	Oct. 31, 2011 Maximum [Member] Other Retirement Plans [Member] CAD
Employer contribution							$ 21,400,000	$ 14,700,000	$ 14,500,000	$ 1,500	4,000
Plan assets recorded in long-term other assets		90,100,000		83,300,000
Plan liabilities recorded in long-term other liabilities		90,100,000	[1]	83,300,000	[1]
Deferred percentage of variable cash compensation	100.00%
Deferred percentage of annual cash base compensation	50.00%
Increase (reduction) to cost of revenue and operating expense		2,449,000		9,426,000		8,957,000
Other income (expense), net		2,449,000		8,810,000		9,969,000
Net increase (decrease) to net income				$ (616,000)		$ 1,012,000

[1] For undistributed deferred compensation due to participants.