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Employee Benefits (Schedule of Weighted-Average Assumptions Used in Computing Net Periodic Pension Cost and Projected Benefit Obligation) (Details) | 12 Months Ended
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Oct. 31, 2017 | Oct. 31, 2016 | Oct. 31, 2015
Defined Benefit Plan Disclosure [Line Items] |  |  |
Discount rate for determining benefit obligations at year end | 3.75% | 3.74% | 4.25%
Rate of compensation increase for determining expense | 4.00% | 4.00% | 4.00%
Rate of compensation increase for determining benefit obligations at year end | 4.00% | 4.00% | 4.00%
Expected rate of return on plan assets for determining net periodic pension cost | 8.00% | 8.00% | 8.00%
Expected rate of return on plan assets at year end | 8.00% | 8.00% | 8.00%
Measurement date for determining assets and benefit obligations at year end | Oct. 31, 2017 | Oct. 31, 2016 | Oct. 31, 2015
Projected Benefit Obligation [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Discount rate for determining net periodic pension cost: | 3.74% | 4.25% | 4.25%
Service Cost [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Discount rate for determining net periodic pension cost: | 3.90% | 4.42% | 4.25%
Interest Cost [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Discount rate for determining net periodic pension cost: | 3.23% | 3.70% | 4.25%

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- Definition Month-end measurement date applicable when an accounting policy election is made to measure plan assets and benefit obligations as of the month-end that is closest to the fiscal year-end, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (u) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition The interest rate used to adjust for the time value of money for the plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition Expected rate of compensation increases (for pay-related plans). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(2) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition The interest rate used to adjust for the time value of money. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Expected Long-Term Rate of Return on Plan Assets -URI http://asc.fasb.org/extlink&oid=6512046 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(3) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition Expected rate of compensation increases (for pay-related plans). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(2) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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