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Employee Benefit Plans - Defined Benefit Pension Plans Weighted-Average Asset Allocations (Detail) - Foreign Plans [Member]	Sep. 30, 2024	Sep. 30, 2023
Defined Benefit Plan Disclosure [Line Items]
Equity securities	19.00%	19.00%
Debt securities	33.00%	31.00%
Real estate	11.00%	10.00%
Cash and other securities	37.00%	40.00%
Total	100.00%	100.00%

X

- Definition

Defined benefit plan, cash and other securities.

+ References

No definition available.

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- Definition

Percentage of defined benefit plan debt securities.

+ References

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- Definition

Percentage of defined benefit plan equity securities.

+ References

No definition available.

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- Definition

Percentage of defined benefit plan real estate.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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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
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

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