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Acquisitions - Pro Forma (Details) - USD ($)
$ in Millions
12 Months Ended
Jul. 31, 2024
Jul. 31, 2023
Jul. 31, 2022
Acquisitions In Current Year      
Business Acquisition [Line Items]      
Pro forma net sales for current year acquisitions $ 29,902 $ 30,140  
Acquisitions In Prior Year      
Business Acquisition [Line Items]      
Pro forma net sales for current year acquisitions   $ 30,299 $ 29,354