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Retirement Benefits (Tables) | 6 Months Ended
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Mar. 31, 2026
Defined Benefit Plan Disclosure [Line Items] |
Schedule of Amount of Expense Associated with Defined Contribution Plans | he amount of expense associated with defined contribution plans were as follows:
|  | Three Months Ended March 31, |  |  | Six Months Ended March 31, |
|  | 2026 |  |  | 2025 |  |  | 2026 |  |  | 2025 |
Company costs |  | $ | 16,505 |  |  | $ | 13,627 |  |  | $ | 31,246 |  |  | $ | 25,970 |
Schedule of Estimated Remaining Cash Contributions | Woodward estimates its remaining cash contributions in fiscal year 2026 will be as follows:
Retirement pension benefits: |  |  |
United States |  | $ | 433 |
United Kingdom |  |  | 186 |
Japan |  |  | — |
Germany |  |  | 541 |
Other postretirement benefits |  |  | 1,588 |
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 |
|  | 2026 |  |  | 2025 |  |  | 2026 |  |  | 2025 |  |  | 2026 |  |  | 2025 |
Service cost |  | $ | 199 |  |  | $ | 230 |  |  | $ | 338 |  |  | $ | 343 |  |  | $ | 537 |  |  | $ | 573 |
Interest cost |  |  | 1,770 |  |  |  | 1,718 |  |  |  | 793 |  |  |  | 717 |  |  |  | 2,563 |  |  |  | 2,435 |
Expected return on plan assets |  |  | (2,617 | ) |  |  | (2,748 | ) |  |  | (641 | ) |  |  | (604 | ) |  |  | (3,258 | ) |  |  | (3,352 | )
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial loss (gain) |  |  | 34 |  |  |  | 42 |  |  |  | (119 | ) |  |  | (98 | ) |  |  | (85 | ) |  |  | (56 | )
Prior service cost |  |  | 129 |  |  |  | 190 |  |  |  | 6 |  |  |  | 5 |  |  |  | 135 |  |  |  | 195 |
Net periodic retirement pension (benefit) cost |  | $ | (485 | ) |  | $ | (568 | ) |  | $ | 377 |  |  | $ | 363 |  |  | $ | (108 | ) |  | $ | (205 | )
Contributions paid |  | $ | — |  |  | $ | — |  |  | $ | 692 |  |  | $ | 490 |  |  | $ | 692 |  |  | $ | 490 |
|  | Six Months Ended March 31, |
|  | United States |  |  | Other Countries |  |  | Total |
|  | 2026 |  |  | 2025 |  |  | 2026 |  |  | 2025 |  |  | 2026 |  |  | 2025 |
Service cost |  | $ | 398 |  |  | $ | 459 |  |  | $ | 673 |  |  | $ | 691 |  |  | $ | 1,071 |  |  | $ | 1,150 |
Interest cost |  |  | 3,540 |  |  |  | 3,437 |  |  |  | 1,579 |  |  |  | 1,445 |  |  |  | 5,119 |  |  |  | 4,882 |
Expected return on plan assets |  |  | (5,235 | ) |  |  | (5,496 | ) |  |  | (1,276 | ) |  |  | (1,218 | ) |  |  | (6,511 | ) |  |  | (6,714 | )
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial loss (gain) |  |  | 68 |  |  |  | 85 |  |  |  | (239 | ) |  |  | (198 | ) |  |  | (171 | ) |  |  | (113 | )
Prior service cost |  |  | 258 |  |  |  | 381 |  |  |  | 12 |  |  |  | 11 |  |  |  | 270 |  |  |  | 392 |
Net periodic retirement pension (benefit) cost |  | $ | (971 | ) |  | $ | (1,134 | ) |  | $ | 749 |  |  | $ | 731 |  |  | $ | (222 | ) |  | $ | (403 | )
Contributions paid |  | $ | — |  |  | $ | — |  |  | $ | 1,112 |  |  | $ | 874 |  |  | $ | 1,112 |  |  | $ | 874 |
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, |
|  | 2026 |  |  | 2025 |  |  | 2026 |  |  | 2025 |
Interest cost |  | $ | 178 |  |  | $ | 180 |  |  | $ | 355 |  |  | $ | 359 |
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial gain |  |  | (112 | ) |  |  | (111 | ) |  |  | (225 | ) |  |  | (221 | )
Net periodic other postretirement cost |  | $ | 66 |  |  | $ | 69 |  |  | $ | 130 |  |  | $ | 138 |
Contributions paid |  | $ | 394 |  |  | $ | 408 |  |  | $ | 791 |  |  | $ | 794 |

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