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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%

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- Definition Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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