Description of Business and Summary of Significant Accounting Policies - Additional information (Details)	12 Months Ended
	Jul. 31, 2024 USD ($) vendor	Jul. 31, 2023 USD ($)	Jul. 31, 2022 USD ($)
Property, Plant and Equipment [Line Items]
Deferred revenue, revenue recognized	$ 920,000,000	$ 808,000,000
Revenue, performance obligation, description of timing	12 months
Deferred revenue	$ 4,000,000	5,000,000
Advertising expense	$ 1,700,000,000	1,500,000,000	$ 1,600,000,000
Business combination measurement period	1 year
Goodwill, impairment loss	$ 0	$ 0	0
Acquired intangible assets, useful life	13 years	13 years
Operating Segments | Reorganization of Certain Workplace and Real Estate Functions | Small Business & Self-Employed
Property, Plant and Equipment [Line Items]
Other expenses		$ 49,000,000	21,000,000
Operating Segments | Reorganization One of Certain Technology Functions | Consumer
Property, Plant and Equipment [Line Items]
Other expenses		168,000,000	150,000,000
Operating Segments | Reorganization Two of Certain Technology Functions | ProTax
Property, Plant and Equipment [Line Items]
Other expenses		60,000,000
Segment Reconciling Items
Property, Plant and Equipment [Line Items]
Other expenses	$ 3,172,000,000	2,840,000,000	2,696,000,000
Share-Based Payment Arrangement, Expense	(1,915,000,000)	(1,712,000,000)	(1,308,000,000)
Segment Reconciling Items | July 2024 Restructuring Plan
Property, Plant and Equipment [Line Items]
Share-Based Payment Arrangement, Expense	$ 25,000,000
Segment Reconciling Items | Reorganization of Certain Workplace and Real Estate Functions
Property, Plant and Equipment [Line Items]
Other expenses		49,000,000	21,000,000
Segment Reconciling Items | Reorganization One of Certain Technology Functions
Property, Plant and Equipment [Line Items]
Other expenses		168,000,000	150,000,000
Segment Reconciling Items | Reorganization Two of Certain Technology Functions
Property, Plant and Equipment [Line Items]
Other expenses		$ 60,000,000	$ 64,000,000
Cost of Goods and Service Benchmark | Supplier Concentration Risk
Property, Plant and Equipment [Line Items]
Number of vendors | vendor	1
Minimum
Property, Plant and Equipment [Line Items]
Capitalized contract cost, amortization period	3 years
Property and equipment, useful life	2 years
Acquired intangible assets, useful life	3 years
Maximum
Property, Plant and Equipment [Line Items]
Capitalized contract cost, amortization period	4 years
Property and equipment, useful life	30 years
Acquired intangible assets, useful life	15 years
Software Development | Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	3 years
Software Development | Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	6 years