Segment Information - Narrative (Details) $ in Millions	3 Months Ended
	Oct. 31, 2024 USD ($) segment	Oct. 31, 2023 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment	4
Operating Segments | Consumer | Reorganization of Certain Technology Functions
Segment Reporting Information [Line Items]
Other corporate expenses		$ 65
Operating Segments | ProTax | Reorganization of Certain Technology Functions
Segment Reporting Information [Line Items]
Other corporate expenses		8
Operating Segments | Global Business Solutions | Reorganization of Certain Workplace and Real Estate Functions
Segment Reporting Information [Line Items]
Other corporate expenses		332
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
Non-US | Revenue Benchmark | Geographic Concentration Risk
Segment Reporting Information [Line Items]
International total net revenue as a percentage of total	10.00%	10.00%