Employee Benefits (Schedule of Weighted-Average Asset Allocations by Asset Category) (Details)	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
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	2.10%	0.90%	4.90%
Corporate common stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset Allocation	14.50%	12.20%	8.90%
Equity mutual funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset Allocation	47.40%	49.90%	47.20%
Real estate funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset Allocation	2.70%	2.90%	4.30%
Bond mutual funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset Allocation	33.30%	34.10%	34.70%