Description of Business and Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Jul. 31, 2024
Segment Reporting Information [Line Items]
Revenue recognized	$ 524	$ 638
Description of timing	12 months
Deferred revenue	$ 3		$ 4
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment
Segment Reporting Information [Line Items]
Other corporate expenses	$ 1,327	1,124
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment | Reorganization of Certain Workplace and Real Estate Functions
Segment Reporting Information [Line Items]
Other corporate expenses		332
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment | Reorganization of Certain Technology Functions
Segment Reporting Information [Line Items]
Other corporate expenses		65
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment | Reorganization of Certain Technology Functions
Segment Reporting Information [Line Items]
Other corporate expenses		8
Global Business Solutions | Operating Segments | Reorganization of Certain Workplace and Real Estate Functions
Segment Reporting Information [Line Items]
Other corporate expenses		332
Consumer | Operating Segments | Reorganization of Certain Technology Functions
Segment Reporting Information [Line Items]
Other corporate expenses		65
ProTax | Operating Segments | Reorganization of Certain Technology Functions
Segment Reporting Information [Line Items]
Other corporate expenses		$ 8