Description of Business and Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2025	Jan. 31, 2024	Jul. 31, 2024
Segment Reporting Information [Line Items]
Revenue recognized	$ 194	$ 167	$ 718	$ 805
Description of timing			12 months
Deferred revenue	3		$ 3		$ 4
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment
Segment Reporting Information [Line Items]
Other corporate expenses	$ 1,443	1,255	$ 2,770	2,379
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment | Reorganization of Certain Workplace and Real Estate Functions
Segment Reporting Information [Line Items]
Other corporate expenses		350		682
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment | Reorganization of Certain Technology Functions
Segment Reporting Information [Line Items]
Other corporate expenses		129		194
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment | Reorganization of Certain Technology Functions
Segment Reporting Information [Line Items]
Other corporate expenses		8		16
Global Business Solutions | Operating Segments | Reorganization of Certain Workplace and Real Estate Functions
Segment Reporting Information [Line Items]
Other corporate expenses		350		682
Consumer | Operating Segments | Reorganization of Certain Technology Functions
Segment Reporting Information [Line Items]
Other corporate expenses		129		194
ProTax | Operating Segments | Reorganization of Certain Technology Functions
Segment Reporting Information [Line Items]
Other corporate expenses		$ 8		$ 16