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Description of Business and Summary of Significant Accounting Policies - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jan. 31, 2026
Jan. 31, 2025
Jan. 31, 2026
Jan. 31, 2025
Jul. 31, 2025
Segment Reporting Information [Line Items]          
Revenue recognized $ 251 $ 194 $ 841 $ 718  
Description of timing     12 months    
Deferred revenue 2   $ 2   $ 4
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment          
Segment Reporting Information [Line Items]          
Other corporate expenses $ 1,760 1,595 $ 3,436 3,077  
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment | Reorganization of Certain Workplace and Real Estate Functions          
Segment Reporting Information [Line Items]          
Other corporate expenses   (3)   (6)  
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment | Reorganization of Certain Technology Functions          
Segment Reporting Information [Line Items]          
Other corporate expenses   149   301  
Global Business Solutions | Operating Segments | Reorganization of Certain Workplace and Real Estate Functions          
Segment Reporting Information [Line Items]          
Other corporate expenses   3   6  
Consumer | Operating Segments | Reorganization of Certain Technology Functions          
Segment Reporting Information [Line Items]          
Other corporate expenses   $ (149)   $ (301)