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Retirement Benefits (Tables) | 6 Months Ended
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Mar. 31, 2022
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, |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
Company costs |  | $ | 9,499 |  |  | $ | 8,497 |  |  | $ | 20,450 |  |  | $ | 16,533 |
Schedule of Estimated Remaining Cash Contributions | Woodward estimates its remaining cash contributions in fiscal year 2022 will be as follows:
Retirement pension benefits: |  |  |  |
United States |  | $ | — |
United Kingdom |  |  | 627 |
Japan |  |  | — |
Germany |  |  | 348 |
Other postretirement benefits |  |  | 1,871 |
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 |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
Service cost |  | $ | 388 |  |  | $ | 432 |  |  | $ | 609 |  |  | $ | 736 |  |  | $ | 997 |  |  | $ | 1,168 |
Interest cost |  |  | 1,321 |  |  |  | 1,239 |  |  |  | 422 |  |  |  | 343 |  |  |  | 1,743 |  |  |  | 1,582 |
Expected return on plan assets |  |  | (2,714 | ) |  |  | (3,536 | ) |  |  | (640 | ) |  |  | (625 | ) |  |  | (3,354 | ) |  |  | (4,161 | )
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial loss |  |  | 64 |  |  |  | 135 |  |  |  | 146 |  |  |  | 234 |  |  |  | 210 |  |  |  | 369 |
Prior service cost |  |  | 245 |  |  |  | 243 |  |  |  | 6 |  |  |  | 6 |  |  |  | 251 |  |  |  | 249 |
Net periodic retirement pension (benefit) cost |  | $ | (696 | ) |  | $ | (1,487 | ) |  | $ | 543 |  |  | $ | 694 |  |  | $ | (153 | ) |  | $ | (793 | )
Contributions paid |  | $ | — |  |  | $ | — |  |  | $ | 811 |  |  | $ | 675 |  |  | $ | 811 |  |  | $ | 675 |
|  | Six-Months Ended March 31, |
|  | United States |  |  | Other Countries |  |  | Total |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
Service cost |  | $ | 777 |  |  | $ | 864 |  |  | $ | 1,230 |  |  | $ | 1,465 |  |  | $ | 2,007 |  |  | $ | 2,329 |
Interest cost |  |  | 2,641 |  |  |  | 2,478 |  |  |  | 848 |  |  |  | 676 |  |  |  | 3,489 |  |  |  | 3,154 |
Expected return on plan assets |  |  | (5,427 | ) |  |  | (7,072 | ) |  |  | (1,285 | ) |  |  | (1,227 | ) |  |  | (6,712 | ) |  |  | (8,299 | )
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial loss |  |  | 129 |  |  |  | 270 |  |  |  | 292 |  |  |  | 462 |  |  |  | 421 |  |  |  | 732 |
Prior service cost |  |  | 490 |  |  |  | 485 |  |  |  | 12 |  |  |  | 12 |  |  |  | 502 |  |  |  | 497 |
Net periodic retirement pension (benefit) cost |  | $ | (1,390 | ) |  | $ | (2,975 | ) |  | $ | 1,097 |  |  | $ | 1,388 |  |  | $ | (293 | ) |  | $ | (1,587 | )
Contributions paid |  | $ | — |  |  | $ | — |  |  | $ | 1,499 |  |  | $ | 1,218 |  |  | $ | 1,499 |  |  | $ | 1,218 |
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, |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
Service cost |  | $ | — |  |  | $ | 1 |  |  | $ | — |  |  | $ | 1 |
Interest cost |  |  | 145 |  |  |  | 149 |  |  |  | 289 |  |  |  | 299 |
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial (gain) loss |  |  | (23 | ) |  |  | 8 |  |  |  | (47 | ) |  |  | 15 |
Prior service cost |  |  | — |  |  |  | 1 |  |  |  | — |  |  |  | 1 |
Net periodic other postretirement cost |  | $ | 122 |  |  | $ | 159 |  |  | $ | 242 |  |  | $ | 316 |
Contributions paid |  | $ | 457 |  |  | $ | 940 |  |  | $ | 928 |  |  | $ | 978 |

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