| **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 |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------|
||
| Pension Plans | United States                                                                                                                                                                                                        |            |   |   |
| **Assumptions used to determine benefit obligations at October 31:**                                                                                                                                                                 |            |   |   |
| Discount rate                                                                                                                                                                                                                        | 2.85%           | 3.25% | 4.53% |
| Rate of compensation increase                                                                                                                                                                                                        | 4.00%           | 4.00% | 3.90% |
| **Assumptions used to determine net benefit costs for the years ended October 31:**                                                                                                                                                  |            |   |   |
| Discount rate - benefit obligation                                                                                                                                                                                                   | 3.25%           | 4.53% | 3.80% |
| Discount rate - service cost                                                                                                                                                                                                         | 3.56%           | 4.70% | 4.01% |
| Discount rate - interest cost                                                                                                                                                                                                        | 2.78%           | 4.15% | 3.31% |
| Expected return on plan assets                                                                                                                                                                                                       | 5.75%           | 6.00% | 6.00% |
| Rate of compensation increase                                                                                                                                                                                                        | 4.00%           | 3.90% | 3.61% |
| Pension Plans | International                                                                                                                                                                                                        |            |   |   |
| **Assumptions used to determine benefit obligations at October 31:**                                                                                                                                                                 |            |   |   |
| Discount rate                                                                                                                                                                                                                        | 1.01%           | 1.26% | 2.14% |
| Rate of compensation increase                                                                                                                                                                                                        | 2.69%           | 3.12% | 3.12% |
| **Assumptions used to determine net benefit costs for the years ended October 31:**                                                                                                                                                  |            |   |   |
| Discount rate - benefit obligation                                                                                                                                                                                                   | 1.26%           | 2.14% | 2.07% |
| Discount rate - service cost                                                                                                                                                                                                         | 1.12%           | 1.82% | 1.76% |
| Discount rate - interest cost                                                                                                                                                                                                        | 1.05%           | 1.90% | 1.83% |
| Expected return on plan assets                                                                                                                                                                                                       | 3.22%           | 3.96% | 3.91% |
| Rate of compensation increase                                                                                                                                                                                                        | 3.12%           | 3.12% | 3.13% |
| Retirement Plans | United States                                                                                                                                                                                                     |            |   |   |
| **Assumptions used to determine benefit obligations at October 31:**                                                                                                                                                                 |            |   |   |
| Discount rate                                                                                                                                                                                                                        | 2.84%           | 3.27% | 4.56% |
| Health care cost trend rate                                                                                                                                                                                                          | 3.40%           | 3.62% | 3.75% |
| Rate to which health care cost trend rate is assumed to incline/decline (ultimate trend rate)                                                                                                                                        | 3.17%           | 3.24% | 3.27% |
| Year the rate reaches the ultimate trend rate                                                                                                                                                                                        | 2026            | 2026 | 2026 |
| **Assumptions used to determine net benefit costs for the years ended October 31:**                                                                                                                                                  |            |   |   |
| Discount rate - benefit obligation                                                                                                                                                                                                   | 3.27%           | 4.56% | 3.86% |
| Discount rate - service cost                                                                                                                                                                                                         | 3.61%           | 4.77% | 4.11% |
| Discount rate - interest cost                                                                                                                                                                                                        | 2.79%           | 4.18% | 3.39% |
| Retirement Plans | International                                                                                                                                                                                                     |            |   |   |
| **Assumptions used to determine benefit obligations at October 31:**                                                                                                                                                                 |            |   |   |
| Discount rate                                                                                                                                                                                                                        | 2.94%           | 3.03% | 3.88% |
| Health care cost trend rate                                                                                                                                                                                                          | 4.22%           | 4.00% | 6.35% |
| Rate to which health care cost trend rate is assumed to incline/decline (ultimate trend rate)                                                                                                                                        | 4.05%           | 4.05% | 3.50% |
| Year the rate reaches the ultimate trend rate                                                                                                                                                                                        | 2040            | 2040 | 2037 |
| **Assumptions used to determine net benefit costs for the years ended October 31:**                                                                                                                                                  |            |   |   |
| Discount rate - benefit obligation                                                                                                                                                                                                   | 3.03%           | 3.88% | 3.52% |
| Discount rate - service cost                                                                                                                                                                                                         | 3.05%           | 3.90% | 3.54% |
| Discount rate - interest cost                                                                                                                                                                                                        | 2.88%           | 3.80% | 3.40% |

| X                                                                                                                                                                                                                                                                                                                                                                                             |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Defined benefit plan assumptions used calculating net periodic benefit cost discount rate benefit obligation.
+ References
No definition available.
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| - Definition
Defined benefit plan assumptions used calculating net periodic benefit cost discount rate interest cost.
+ References
No definition available.
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| - Definition
Defined benefit plan assumptions used calculating net periodic benefit cost discount rate service cost.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Weighted average rate of compensation increase used to determine net periodic benefit cost of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Assumed rate, for next fiscal year, based on annual change in cost of health care cost benefits used to measure expected cost of benefits covered by defined benefit postretirement plan. Factors include, but are not limited to, estimate of health care inflation, change in health care utilization or delivery pattern, technological advances, and change in health status of participant. Excludes factors for change in composition of plan population by age and dependency status.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Ultimate trend rate for health care cost for defined benefit postretirement plan.
+ References
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| - Definition
Year ultimate health care cost trend rate is expected to be reached, in CCYY format.
+ References
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