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Retirement, Pension and Other Postretirement Plans - Allocation of Pension Plan Assets (Detail) - Pension Plans [Member] | Oct. 31, 2018 | Oct. 31, 2017
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United States [Member] |  |
Allocation of pension plan assets |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 100.00% | 100.00%
International [Member] |  |
Allocation of pension plan assets |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 100.00% | 100.00%
Equity Securities [Member] | United States [Member] |  |
Allocation of pension plan assets |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 13.00% | 13.00%
Debt Securities [Member] | United States [Member] |  |
Allocation of pension plan assets |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 50.00% | 48.00%
Insurance Contracts [Member] | International [Member] |  |
Allocation of pension plan assets |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 55.00% | 56.00%
Pooled Investment Funds [Member] | United States [Member] |  |
Allocation of pension plan assets |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 36.00% | 39.00%
Pooled Investment Funds [Member] | International [Member] |  |
Allocation of pension plan assets |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 44.00% | 42.00%
Other [Member] | United States [Member] |  |
Allocation of pension plan assets |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 1.00% |
Other [Member] | International [Member] |  |
Allocation of pension plan assets |  |
Defined Benefit Plan, Actual Plan Asset Allocations | 1.00% | 2.00%

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- References No definition available. + Details
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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=108410482&loc=d3e1928-114920 + Details
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