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Contingencies - Narrative (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2026	Sep. 30, 2025
Loss Contingencies [Line Items]
Standard product warranty length, minimum	1 year
Standard product warranty length, maximum	2 years
Limited product warranty length (up to)	10 years
Accrued amounts for litigation and other contingent liabilities	$ 12,340	$ 9,930
Performance Bonds
Loss Contingencies [Line Items]
Letters of credit secured using cash collateral	45,800
Outstanding performance bonds	361,300
Surety-backed letters of credit	$ 4,600

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Letters Of Credit Outstanding, Surety-Backed, Amount

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Limited Product Warranty Length

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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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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Amount of loss contingency liability.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of a type of municipal bond typically used to fund a development project. Also called special assessment limited liability bond, special district bond, special purpose bond, special tax bond and community development obligation. Interest owed to lenders is paid by taxes levied on the community benefiting from the particular bond-funded project. For example, if a bond of this sort was issued to pay for sidewalks to be repaved in a certain community, an additional tax would be levied on homeowners in the area benefiting from this project.

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