Employee Benefits (Schedule of Components of Net Periodic Pension Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Apr. 30, 2016	Apr. 30, 2015
General Discussion of Pension and Other Postretirement Benefits [Abstract]
Service cost	$ 2,300	$ 2,000	$ 4,600	$ 4,100
Interest cost	1,200	1,100	2,500	2,100
Expected return on plan assets	(1,600)	(1,500)	(3,300)	(3,000)
Amortization of prior service cost	0	0	0	0
Recognized net actuarial loss	400	200	800	500
Net periodic pension cost	$ 2,300	$ 1,800	$ 4,600	$ 3,700