Business Information - Narrative (Details)	12 Months Ended
Sep. 30, 2024 hourly_plant_personnel segment bargaining_unit	Sep. 30, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of operating segments \| segment	1
Number of employees represented by separate collective bargaining agreements \| hourly_plant_personnel	90
Number of collective bargain agreements	2
Number of units entered into early negotiations and ratification of CBA	2
Sales Revenue, Net \| Geographic Concentration Risk \| United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of concentration risk	77.00%	74.00%
Sales Revenue, Net \| Geographic Concentration Risk \| Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of concentration risk	8.00%	9.00%
Sales Revenue, Net \| Geographic Concentration Risk \| Asia
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of concentration risk	8.00%	9.00%
Sales Revenue, Net \| Geographic Concentration Risk \| Other North American countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of concentration risk	6.00%	8.00%

Number Of Units, Early Negotiations And Ratification For Collective Bargaining Agreements

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Number of Collective Bargain Units

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Number of Employees Represented by Separate Collective Bargaining Units

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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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.

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