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Pension and Other Postretirement Benefit Plans | 3 Months Ended
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Dec. 31, 2021
Retirement Benefits [Abstract] |
Pension and Other Postretirement Benefit Plans | Pension and Other Postretirement Benefit Plans The Company provides defined benefit pension and other postretirement plans to certain employees. Net periodic pension and other postretirement benefit cost for the plans included the following:
| Three months ended December 31,
| Pension |  | Other Postretirement
| 2021 |  | 2020 |  | 2021 |  | 2020
Service cost | $ | 380 |  |  | $ | 2,213 |  |  | $ | 41 |  |  | $ | 50 |
Interest cost * | 990 |  |  | 1,548 |  |  | 103 |  |  | 94 |
Expected return on plan assets * | (1,042) |  |  | (2,763) |  |  | — |  |  | — |
Amortization: |  |  |  |  |  |  |
Prior service cost (credit) | 47 |  |  | (17) |  |  | (91) |  |  | (91) |
Net actuarial loss * | 201 |  |  | 3,021 |  |  | — |  |  | — |
Settlement loss * | 30,856 |  |  | — |  |  | — |  |  | — |
Net benefit cost | $ | 31,432 |  |  | $ | 4,002 |  |  | $ | 53 |  |  | $ | 53 |
* Non-service components of pension and postretirement expense are included in other income (deductions), net.
Benefit payments under the Company's principal defined benefit retirement plan ("DB Plan") are made from plan assets, while benefit payments under the supplemental retirement plan and postretirement benefit plan are made from the Company's operating funds. In the first quarter of fiscal 2022, the Company terminated its DB Plan and made plan contributions totaling $35,706 to fully fund the planned settlement of the DB Plan obligations. Also during the first quarter of fiscal 2022, lump sum distributions of $185,958 were made from the DB Plan to plan participants, and non-participating annuity contracts totaling $56,274 were purchased by the DB Plan for plan participants, resulting in the full settlement of the DB Plan obligations. The settlement of the DB Plan obligations resulted in the recognition of a non-cash charge of $30,856, which has been presented as a component of other income (deductions), net for the three months ended December 31, 2021. This amount represents the immediate recognition of the remaining portion of the deferred AOCI balances related to the DB Plan. Contributions made and anticipated for fiscal year 2022 are as follows:
Contributions |  | Pension |  | Other Postretirement
Contributions during the three months ended December 31, 2021: |  |  |  |
Principal defined benefit retirement plan |  | $ | 35,706 |  |  | $ | — |
Supplemental retirement plan |  | 199 |  |  | — |
Other postretirement plan |  | — |  |  | 83 |
Additional contributions expected in fiscal 2022: |  |  |  |
Supplemental retirement plan |  | $ | 561 |  |  | $ | — |
Other postretirement plan |  | — |  |  | 801 |

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