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Segment Information - Additional information (Details)
$ in Millions
12 Months Ended
Jul. 31, 2025
USD ($)
segment
Jul. 31, 2024
USD ($)
Jul. 31, 2023
USD ($)
Segment Reporting Information [Line Items]      
Number of reportable segments | segment 2    
Segment Reconciling Items      
Segment Reporting Information [Line Items]      
Other expenses $ 6,693 $ 5,788 $ 5,253
Segment Reconciling Items | Reorganization One of Certain Technology Functions      
Segment Reporting Information [Line Items]      
Other expenses   606 509
Operating Segments | Reorganization of Certain Workplace and Real Estate Functions | Global Business Solutions      
Segment Reporting Information [Line Items]      
Other expenses   1,400 1,300
Operating Segments | Reorganization One of Certain Technology Functions | Consumer      
Segment Reporting Information [Line Items]      
Other expenses   606 509
Operating Segments | Reclassification, Segmentation Basis Change | Global Business Solutions      
Segment Reporting Information [Line Items]      
Other expenses 9 16 4
Operating Segments | Reclassification, Segmentation Basis Change | Consumer      
Segment Reporting Information [Line Items]      
Other expenses $ 606 $ 585 $ 581
Revenue Benchmark | International | Geographic Concentration Risk      
Segment Reporting Information [Line Items]      
Total International net revenue as a percentage 8.00% 8.00% 8.00%