Employee Benefits - Schedule of Weighted-Average Asset Allocations by Asset Category (Details)	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
Defined Benefit Plan, Plan Assets, Allocation [Line Items]
Asset allocation	100.00%	100.00%	100.00%
Cash and cash equivalents
Defined Benefit Plan, Plan Assets, Allocation [Line Items]
Asset allocation	3.20%	2.10%	0.90%
Corporate common stock
Defined Benefit Plan, Plan Assets, Allocation [Line Items]
Asset allocation	0.00%	14.50%	12.20%
Equity mutual funds
Defined Benefit Plan, Plan Assets, Allocation [Line Items]
Asset allocation	63.70%	47.40%	49.90%
Hedging Strategy Funds
Defined Benefit Plan, Plan Assets, Allocation [Line Items]
Asset allocation	4.90%	0.00%	0.00%
Real estate funds
Defined Benefit Plan, Plan Assets, Allocation [Line Items]
Asset allocation	0.00%	2.70%	2.90%
Bond mutual funds
Defined Benefit Plan, Plan Assets, Allocation [Line Items]
Asset allocation	28.20%	33.30%	34.10%