Postretirement Benefit Plans - Additional Information (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2025 |
Dec. 31, 2024 |
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| Defined Benefit Plan Disclosure [Line Items] | ||||
| Net actuarial gains (losses), amortization periods | 15 years | |||
| Expected long-term rate of return on plan assets | 6.50% | |||
| Maximum amortization period of unfunded actuarial liability | 15 years | |||
| Expected additional contribution to funded pension plan | $ 6 | |||
| Expected additional contribution to unfunded pension plan | 6 | |||
| Expected additional contribution to savings and defined contribution plans | 16 | |||
| Pension Benefit Plans | ||||
| Defined Benefit Plan Disclosure [Line Items] | ||||
| Settlement and curtailment gain | $ 1 | $ 0 | 1 | $ 0 |
| Amount settled | 94 | |||
| Payouts | 15 | |||
| Settlement gain | 1 | |||
| Other Benefit Plans | ||||
| Defined Benefit Plan Disclosure [Line Items] | ||||
| Settlement and curtailment gain | $ 0 | $ 0 | $ 11 | $ 0 |
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- Definition Additional contributions to funded pension plan. No definition available.
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- Definition Additional contributions to unfunded pension plan. No definition available.
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- Definition Net Actuarial Gains (Losses), Amortization Periods No definition available.
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- Definition Unfunded Actuarial Liability, Maximum Amortization Period No definition available.
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- Definition Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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 gain (loss) recognized in net periodic benefit (cost) credit from settlement and curtailment. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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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- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. No definition available.
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- Details
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- Details
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