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Retirement, Pension and Other Postretirement Plans - Allocation of Pension Plan Assets (Detail) - Pension Plans | Oct. 31, 2021 | Oct. 31, 2020
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United States |  |
Allocation of pension plan assets |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 100.00% | 100.00%
International |  |
Allocation of pension plan assets |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 100.00% | 100.00%
Equity securities | United States |  |
Allocation of pension plan assets |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 13.00% | 11.00%
Equity securities | International |  |
Allocation of pension plan assets |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 0.00% | 0.00%
Debt securities | United States |  |
Allocation of pension plan assets |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 46.00% | 49.00%
Debt securities | International |  |
Allocation of pension plan assets |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 0.00% | 0.00%
Insurance contracts | United States |  |
Allocation of pension plan assets |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 0.00% | 0.00%
Insurance contracts | International |  |
Allocation of pension plan assets |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 51.00% | 54.00%
Pooled investment funds | United States |  |
Allocation of pension plan assets |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 41.00% | 39.00%
Pooled investment funds | International |  |
Allocation of pension plan assets |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 48.00% | 44.00%
Other | United States |  |
Allocation of pension plan assets |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 0.00% | 1.00%
Other | International |  |
Allocation of pension plan assets |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 1.00% | 2.00%

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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=123447040&loc=d3e1928-114920 + Details
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