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Retirement Benefits (Schedule of Amounts Recognized in Balance Sheets and Accumulated Other Comprehensive (Earnings) Losses) (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022
--- | --- | --- | ---
Defined Benefit Pension Plan [Member] |  |  |
Amounts recognized in the Consolidated Balance Sheets consist of: |  |  |
Other non-current assets | $ 55,821 | $ 43,339 |
Accrued liabilities | (1,166) | (1,084) |
Other non-current liabilities | (35,564) | (30,595) |
Net over/(under) funded status at end of year | 19,091 | 11,660 |
Amounts recognized in accumulated other comprehensive (earnings) losses consist of: |  |  |
Unrecognized net prior service cost (benefit) | 3,709 | 3,264 |
Unrecognized net losses (gains) | (7,404) | 680 |
Total amounts recognized | (3,695) | 3,944 | $ 13,300
Deferred taxes | (3,690) | (5,293) |
Amounts recognized in accumulated other comprehensive (earnings) | (7,385) | (1,349) |
Other Postretirement Benefit Plans [Member] |  |  |
Amounts recognized in the Consolidated Balance Sheets consist of: |  |  |
Accrued liabilities | (1,668) | (1,739) |
Other non-current liabilities | (13,535) | (13,597) |
Net over/(under) funded status at end of year | (15,203) | (15,336) |
Amounts recognized in accumulated other comprehensive (earnings) losses consist of: |  |  |
Unrecognized net losses (gains) | (5,260) | (6,412) |
Total amounts recognized | (5,260) | (6,412) | (6,225)
Deferred taxes | 1,009 | 1,292 |
Amounts recognized in accumulated other comprehensive (earnings) | (4,251) | (5,120) |
United States [Member] | Defined Benefit Pension Plan [Member] |  |  |
Amounts recognized in the Consolidated Balance Sheets consist of: |  |  |
Other non-current assets | 39,148 | 29,172 |
Other non-current liabilities | (186) | (1,024) |
Net over/(under) funded status at end of year | 38,962 | 28,148 |
Amounts recognized in accumulated other comprehensive (earnings) losses consist of: |  |  |
Unrecognized net prior service cost (benefit) | 3,200 | 2,777 |
Unrecognized net losses (gains) | (2,749) | 8,527 |
Total amounts recognized | 451 | 11,304 | 18,297
Deferred taxes | (3,499) | (6,101) |
Amounts recognized in accumulated other comprehensive (earnings) | (3,048) | 5,203 |
Foreign Plan | Defined Benefit Pension Plan [Member] |  |  |
Amounts recognized in the Consolidated Balance Sheets consist of: |  |  |
Other non-current assets | 16,673 | 14,167 |
Accrued liabilities | (1,166) | (1,084) |
Other non-current liabilities | (35,378) | (29,571) |
Net over/(under) funded status at end of year | (19,871) | (16,488) |
Amounts recognized in accumulated other comprehensive (earnings) losses consist of: |  |  |
Unrecognized net prior service cost (benefit) | 509 | 487 |
Unrecognized net losses (gains) | (4,655) | (7,847) |
Total amounts recognized | (4,146) | (7,360) | $ (4,997)
Deferred taxes | (191) | 808 |
Amounts recognized in accumulated other comprehensive (earnings) | $ (4,337) | $ (6,552) |

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