Employee Benefits (Schedule of Weighted-Average Asset Allocations by Asset Category) (Details)	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010
Defined Benefit Plan Disclosure [Line Items]
Asset Allocation	100.00%	100.00%	100.00%
Cash and cash equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset Allocation	3.00%	2.10%	4.10%
Corporate common stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset Allocation	16.50%	19.00%	21.30%
Equity mutual funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset Allocation	43.20%	41.10%	37.90%
Real estate funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset Allocation	5.20%	5.60%	5.00%
Bond mutual funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset Allocation	32.10%	32.20%	31.70%