Employee Benefits (Schedule of Components of Net Periodic Pension Costs) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 4,937	$ 4,749	$ 3,969
Interest cost	3,053	2,973	2,670
Amortization of transition (asset) or obligation	21	21	21
Amortization of prior service cost	24	24	24
Recognized actuarial loss	16,936	3,956	2,276
Net periodic pension cost	5,736	5,574	5,080
Net Periodic Benefit Cost [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	4,937	4,748	3,969
Interest cost	3,053	2,973	2,670
Expected returns on assets	(3,424)	(2,944)	(2,444)
Amortization of transition (asset) or obligation	20	21	21
Amortization of prior service cost	24	24	24
Recognized actuarial loss	1,126	752	796
Curtailment loss	0	0	44
Net periodic pension cost	$ 5,736	$ 5,574	$ 5,080