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Retirement Benefits (Tables) | 6 Months Ended
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Mar. 31, 2023
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, |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Company costs |  | $ | 11,838 |  |  | $ | 9,499 |  |  | $ | 21,940 |  |  | $ | 20,450 |
Schedule of Estimated Remaining Cash Contributions | Woodward estimates its remaining cash contributions in fiscal year 2023 will be as follows:
Retirement pension benefits: |  |  |
United States |  | $ | — |
United Kingdom |  |  | 481 |
Japan |  |  | — |
Germany |  |  | 401 |
Other postretirement benefits |  |  | 1,931 |
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 are as follows:
|  | Three-Months Ended March 31, |
|  | United States |  |  | Other Countries |  |  | Total |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Service cost |  | $ | 224 |  |  | $ | 388 |  |  | $ | 332 |  |  | $ | 609 |  |  | $ | 556 |  |  | $ | 997 |
Interest cost |  |  | 1,825 |  |  |  | 1,321 |  |  |  | 778 |  |  |  | 422 |  |  |  | 2,603 |  |  |  | 1,743 |
Expected return on plan assets |  |  | (2,075 | ) |  |  | (2,714 | ) |  |  | (573 | ) |  |  | (640 | ) |  |  | (2,648 | ) |  |  | (3,354 | )
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial loss (gain) |  |  | 73 |  |  |  | 64 |  |  |  | (153 | ) |  |  | 146 |  |  |  | (80 | ) |  |  | 210 |
Prior service cost |  |  | 175 |  |  |  | 245 |  |  |  | 6 |  |  |  | 6 |  |  |  | 181 |  |  |  | 251 |
Net periodic retirement pension cost (benefit) |  | $ | 222 |  |  | $ | (696 | ) |  | $ | 390 |  |  | $ | 543 |  |  | $ | 612 |  |  | $ | (153 | )
Contributions paid |  | $ | — |  |  | $ | — |  |  | $ | 736 |  |  | $ | 811 |  |  | $ | 736 |  |  | $ | 811 |
|  | Six-Months Ended March 31, |
|  | United States |  |  | Other Countries |  |  | Total |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Service cost |  | $ | 447 |  |  | $ | 777 |  |  | $ | 652 |  |  | $ | 1,230 |  |  | $ | 1,099 |  |  | $ | 2,007 |
Interest cost |  |  | 3,649 |  |  |  | 2,641 |  |  |  | 1,528 |  |  |  | 848 |  |  |  | 5,177 |  |  |  | 3,489 |
Expected return on plan assets |  |  | (4,149 | ) |  |  | (5,427 | ) |  |  | (1,124 | ) |  |  | (1,285 | ) |  |  | (5,273 | ) |  |  | (6,712 | )
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial loss (gain) |  |  | 146 |  |  |  | 129 |  |  |  | (301 | ) |  |  | 292 |  |  |  | (155 | ) |  |  | 421 |
Prior service cost |  |  | 349 |  |  |  | 490 |  |  |  | 11 |  |  |  | 12 |  |  |  | 360 |  |  |  | 502 |
Net periodic retirement pension cost (benefit) |  | $ | 442 |  |  | $ | (1,390 | ) |  | $ | 766 |  |  | $ | 1,097 |  |  | $ | 1,208 |  |  | $ | (293 | )
Contributions paid |  | $ | — |  |  | $ | — |  |  | $ | 1,298 |  |  | $ | 1,499 |  |  | $ | 1,298 |  |  | $ | 1,499 |
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 are as follows:
|  | Three-Months Ended March 31, |  |  | Six-Months Ended March 31, |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Service cost |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Interest cost |  |  | 226 |  |  |  | 145 |  |  |  | 452 |  |  |  | 289 |
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial gain |  |  | (124 | ) |  |  | (23 | ) |  |  | (248 | ) |  |  | (47 | )
Prior service cost |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Net periodic other postretirement cost |  | $ | 102 |  |  | $ | 122 |  |  | $ | 204 |  |  | $ | 242 |
Contributions paid |  | $ | 444 |  |  | $ | 457 |  |  | $ | 885 |  |  | $ | 928 |

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