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v3.23.1

Retirement Benefits (Narrative) (Details) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2023 | Mar. 31, 2022
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Percentage of annual contribution equal to eligible prior year wages |  |  | 5.00% |
Common shares issued for benefit plans | $ 19,307 | $ 17,168 | $ 19,467 | $ 17,168
Treasury Stock [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Common shares issued from treasury stock for benefit plans, shares | 187 | 150 | 189 | 150
Common shares issued for benefit plans | $ 8,447 | $ 6,567 | $ 8,524 | $ 6,567

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