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Retirement, Pension and Other Postretirement Plans - Weighted Average Assumptions Representing the Rates Used to Develop the Actuarial Present Value of Projected Benefit Obligation and the Net Periodic Benefit Costs (Detail) | 12 Months Ended
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Oct. 31, 2015 | Oct. 31, 2014 | Oct. 31, 2013
Pension Plan, United States [Member] |  |  |
Assumptions used to determine benefit obligations at October 31: |  |  |
Discount rate | 4.39% | 4.29% | 4.75%
Rate of compensation increase | 3.50% | 3.49% | 3.30%
Assumptions used to determine net benefit costs for the years ended October 31: |  |  |
Discount rate | 4.29% | 4.75% | 3.85%
Expected return on plan assets | 6.76% | 7.24% | 7.24%
Rate of compensation increase | 3.49% | 3.30% | 3.30%
Pension Plan, International [Member] |  |  |
Assumptions used to determine benefit obligations at October 31: |  |  |
Discount rate | 2.81% | 2.94% | 3.72%
Rate of compensation increase | 3.22% | 3.19% | 3.18%
Assumptions used to determine net benefit costs for the years ended October 31: |  |  |
Discount rate | 2.94% | 3.72% | 3.52%
Expected return on plan assets | 4.39% | 4.60% | 4.43%
Rate of compensation increase | 3.19% | 3.18% | 3.13%
Postretirement Benefit Plans, United States [Member] |  |  |
Assumptions used to determine benefit obligations at October 31: |  |  |
Discount rate | 4.50% | 4.40% | 4.80%
Health care cost trend rate | 3.72% | 3.93% | 4.12%
Rate to which health care cost trend rate is assumed to decline (ultimate trend rate) | 3.27% | 3.41% | 3.47%
Year the rate reaches the ultimate trend rate | 2025 | 2024 | 2021
Assumptions used to determine net benefit costs for the years ended October 31: |  |  |
Discount rate | 4.40% | 4.80% | 3.85%
Postretirement Benefit Plans, International [Member] |  |  |
Assumptions used to determine benefit obligations at October 31: |  |  |
Discount rate | 4.35% | 4.25% | 4.95%
Health care cost trend rate | 6.31% | 6.48% | 6.65%
Rate to which health care cost trend rate is assumed to decline (ultimate trend rate) | 3.50% | 3.50% | 3.50%
Year the rate reaches the ultimate trend rate | 2031 | 2031 | 2031
Assumptions used to determine net benefit costs for the years ended October 31: |  |  |
Discount rate | 4.25% | 4.95% | 4.40%

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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=58740216&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=58740216&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=58740216&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=58740216&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=58740216&loc=d3e1928-114920 + Details
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- Definition The assumed health care cost trend rate for the next year used to measure the expected cost of benefits covered by the plan (gross eligible charges). This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Health Care Cost Trend Rate -URI http://asc.fasb.org/extlink&oid=6514820 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (l) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition The ultimate trend rate for health care costs. + 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 (l) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition Year the ultimate health care cost trend rate is expected to be reached, in CCYY 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 (l) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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