Stock-Based Compensation Additional Information (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Apr. 30, 2025 |
Apr. 30, 2024 |
Apr. 30, 2023 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Pre-tax compensation expense | $ 28 | $ 25 | $ 18 |
| Deferred tax benefit | 3 | 3 | 3 |
| Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $ 15 | ||
| Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition | 1 year 6 months | ||
| Intrinsic value of SSARs exercised | $ 0 | 12 | 19 |
| Fair value of shares vested | 5 | 4 | 6 |
| Tax benefit from exercise / vesting of awards | $ 1 | $ 3 | $ 4 |
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- Definition Share based compensation arrangement by award stock settled appreciation rights exercises in period intrinsic value. No definition available.
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- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of tax benefit for recognition of expense of award under share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of tax benefit from exercise of option under share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of noncash expense for share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. 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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