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Inventories
3 Months Ended
Jul. 31, 2023
Inventory Disclosure [Abstract]  
Inventories InventoriesWe value some of our consolidated inventories, including most of our U.S. inventories, at the lower of cost, using the last-in, first-out (LIFO) method or market value. If the LIFO method had not been used, inventories at current cost would have been $429 million higher than reported as of April 30, 2023, and $442 million higher than reported as of July 31, 2023. Changes in the LIFO valuation reserve for interim periods are based on an allocation of the projected change for the entire fiscal year, recognized proportionately over the remainder of the fiscal year.