Pension and Retirement Plans - Assumptions used for projected benefit obligation (Details) - Pension	Sep. 30, 2025	Sep. 30, 2024
U.S.
Pension and Retirement Plans
Discount rate:	5.32%	4.86%
International
Pension and Retirement Plans
Discount rate:	5.60%	5.00%
Expected return on plan assets:	5.60%	4.70%

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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+ Details