Inventory (Details) - USD ($) $ in Millions |
Jul. 31, 2026 |
Apr. 30, 2026 |
|---|---|---|
| Inventory Disclosure [Abstract] | ||
| Raw materials, consumables and spares | $ 96 | $ 92 |
| Goods for resale | 96 | 88 |
| Inventory | $ 192 | $ 180 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Aggregated amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed. This amount is net of valuation reserves and adjustments. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount, after of valuation reserves and allowances, of inventory, classified as other, expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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