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Retirement Benefits (Tables) | 6 Months Ended
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Mar. 31, 2025
Defined Benefit Plan Disclosure [Line Items] |
Schedule of Amount of Expense Associated with Defined Contribution Plans | The amount of expense associated with defined contribution plans was as follows:
|  | Three Months Ended March 31, |  |  | Six Months Ended March 31, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Company costs |  | $ | 13,627 |  |  | $ | 12,902 |  |  | $ | 25,970 |  |  | $ | 24,077 |
Schedule of Estimated Remaining Cash Contributions | Woodward estimates its remaining cash contributions in fiscal year 2025 will be as follows:
Retirement pension benefits: |  |  |
United States |  | $ | — |
United Kingdom |  |  | 145 |
Japan |  |  | — |
Germany |  |  | 583 |
Other postretirement benefits |  |  | 1,725 |
Defined Benefit Pension Plan [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Schedule of Net Periodic Benefit Costs | The components of the net periodic retirement pension costs recognized were as follows:
|  | Three Months Ended March 31, |
|  | United States |  |  | Other Countries |  |  | Total |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Service cost |  | $ | 230 |  |  | $ | 194 |  |  | $ | 343 |  |  | $ | 312 |  |  | $ | 573 |  |  | $ | 506 |
Interest cost |  |  | 1,718 |  |  |  | 1,900 |  |  |  | 717 |  |  |  | 803 |  |  |  | 2,435 |  |  |  | 2,703 |
Expected return on plan assets |  |  | (2,748 | ) |  |  | (2,271 | ) |  |  | (604 | ) |  |  | (602 | ) |  |  | (3,352 | ) |  |  | (2,873 | )
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial loss (gain) |  |  | 42 |  |  |  | 56 |  |  |  | (98 | ) |  |  | (171 | ) |  |  | (56 | ) |  |  | (115 | )
Prior service cost |  |  | 190 |  |  |  | 175 |  |  |  | 5 |  |  |  | 5 |  |  |  | 195 |  |  |  | 180 |
Net periodic retirement pension (benefit) cost |  | $ | (568 | ) |  | $ | 54 |  |  | $ | 363 |  |  | $ | 347 |  |  | $ | (205 | ) |  | $ | 401 |
Contributions paid |  | $ | — |  |  | $ | — |  |  | $ | 490 |  |  | $ | 746 |  |  | $ | 490 |  |  | $ | 746 |
|  | Six Months Ended March 31, |
|  | United States |  |  | Other Countries |  |  | Total |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Service cost |  | $ | 459 |  |  | $ | 388 |  |  | $ | 691 |  |  | $ | 621 |  |  | $ | 1,150 |  |  | $ | 1,009 |
Interest cost |  |  | 3,437 |  |  |  | 3,799 |  |  |  | 1,445 |  |  |  | 1,596 |  |  |  | 4,882 |  |  |  | 5,395 |
Expected return on plan assets |  |  | (5,496 | ) |  |  | (4,542 | ) |  |  | (1,218 | ) |  |  | (1,194 | ) |  |  | (6,714 | ) |  |  | (5,736 | )
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial loss (gain) |  |  | 85 |  |  |  | 113 |  |  |  | (198 | ) |  |  | (339 | ) |  |  | (113 | ) |  |  | (226 | )
Prior service cost |  |  | 381 |  |  |  | 349 |  |  |  | 11 |  |  |  | 11 |  |  |  | 392 |  |  |  | 360 |
Net periodic retirement pension (benefit) cost |  | $ | (1,134 | ) |  | $ | 107 |  |  | $ | 731 |  |  | $ | 695 |  |  | $ | (403 | ) |  | $ | 802 |
Contributions paid |  | $ | — |  |  | $ | — |  |  | $ | 874 |  |  | $ | 1,339 |  |  | $ | 874 |  |  | $ | 1,339 |
Other Postretirement Benefit Plans [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Schedule of Net Periodic Benefit Costs | The components of the net periodic other postretirement benefit costs recognized were as follows:
|  | Three Months Ended March 31, |  |  | Six Months Ended March 31, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Interest cost |  | $ | 180 |  |  | $ | 225 |  |  | $ | 359 |  |  | $ | 451 |
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial gain |  |  | (111 | ) |  |  | (139 | ) |  |  | (221 | ) |  |  | (278 | )
Net periodic other postretirement cost |  | $ | 69 |  |  | $ | 86 |  |  | $ | 138 |  |  | $ | 173 |
Contributions paid |  | $ | 408 |  |  | $ | 413 |  |  | $ | 794 |  |  | $ | 825 |

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