Pension and Retirement Plans - Assumptions used for projected benefit obligation (Details) - Pension: |
Sep. 30, 2024 |
Sep. 30, 2023 |
---|---|---|
U.S. | ||
Defined Benefit Plan Disclosure [Line Items] | ||
Discount rate: | 4.86% | 5.62% |
International | ||
Defined Benefit Plan Disclosure [Line Items] | ||
Discount rate: | 5.00% | 5.40% |
Expected return on plan assets: | 4.70% | 5.10% |