Pension and Other Postretirement Benefits (Changes in Funded Status of Benefit Plans Recognized in Other Comprehensive (Income) Loss) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Apr. 30, 2025 |
Apr. 30, 2024 |
Apr. 30, 2023 |
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| Pension Benefits [Member] | |||
| Amounts recognized in OCI | |||
| Prior service credit (cost) | $ 0 | $ (1) | $ 0 |
| Net actuarial gain (loss) | (6) | 20 | (29) |
| Amortization reclassified to earnings: | |||
| Prior service cost (credit) | 1 | 1 | 1 |
| Net actuarial loss (gain) | 2 | 6 | 38 |
| Net amount recognized in OCI | (3) | 26 | 10 |
| Medical and Life Insurance Benefits [Member] | |||
| Amounts recognized in OCI | |||
| Prior service credit (cost) | 0 | 0 | 0 |
| Net actuarial gain (loss) | (2) | 3 | 2 |
| Amortization reclassified to earnings: | |||
| Prior service cost (credit) | (1) | 0 | 0 |
| Net actuarial loss (gain) | 0 | 0 | 0 |
| Net amount recognized in OCI | $ (3) | $ 3 | $ 2 |
| X | ||||||||||
- Definition Defined benefit plan amortization reclassified to net income. No definition available.
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- References No definition available.
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- Definition Amount, before tax, of cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount, before tax, of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) of defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount, before tax, after reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount, before tax, of gain (loss) for (increase) decrease in value of benefit obligation for change in actuarial assumptions and increase (decrease) in value of plan assets from experience different from that assumed of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount, before tax, of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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- Details
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