Pension and Other Postretirement Benefit Plans - Narrative (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Dec. 31, 2022 |
Mar. 31, 2022 |
Dec. 31, 2021 |
Mar. 31, 2023 |
Mar. 31, 2022 |
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| Defined Benefit Plan Disclosure [Line Items] | |||||
| Settlement losses | $ (24,242) | $ (35,706) | |||
| SERP, DB, and ORRP Plan | |||||
| Defined Benefit Plan Disclosure [Line Items] | |||||
| Benefit payments | $ 24,242 | ||||
| Settlement losses | $ 1,271 | ||||
| DB Plan | |||||
| Defined Benefit Plan Disclosure [Line Items] | |||||
| Benefit payments | $ 185,958 | ||||
| Settlement losses | $ 30,856 | ||||
| Employer contributions | $ 35,706 | ||||
| Annuity contracts purchased | $ 56,274 | ||||
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- Definition Amount of contribution received by defined benefit plan from employer which increases plan assets. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Amount of payment to participant under defined benefit plan which decreases plan assets. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of payment, which decreases plan assets of defined benefit plan, for irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Transaction constituting settlement includes, but is not limited to, making lump-sum cash payment to participant in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contract. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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- Details
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