Restructuring (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2022
Restructuring Reserve [Roll Forward]
Accrued July 31, 2023	$ 0
Initial Costs	223	$ 0	$ 0
Cash Payments	0
Non-Cash Items	(36)
Accrued July 31, 2024	187	0
Total Costs Incurred to Date	223
Total Expected Plan Cost	247
Operating Segments | Small Business & Self-Employed
Restructuring Reserve [Roll Forward]
Accrued July 31, 2023	0
Initial Costs	96
Cash Payments	0
Non-Cash Items	(12)
Accrued July 31, 2024	84	0
Total Costs Incurred to Date	96
Total Expected Plan Cost	110
Operating Segments | Consumer
Restructuring Reserve [Roll Forward]
Accrued July 31, 2023	0
Initial Costs	9
Cash Payments	0
Non-Cash Items	0
Accrued July 31, 2024	9	0
Total Costs Incurred to Date	9
Total Expected Plan Cost	10
Operating Segments | Credit Karma
Restructuring Reserve [Roll Forward]
Accrued July 31, 2023	0
Initial Costs	0
Cash Payments	0
Non-Cash Items	0
Accrued July 31, 2024	0	0
Total Costs Incurred to Date	0
Total Expected Plan Cost	0
Operating Segments | ProTax
Restructuring Reserve [Roll Forward]
Accrued July 31, 2023	0
Initial Costs	2
Cash Payments	0
Non-Cash Items	0
Accrued July 31, 2024	2	0
Total Costs Incurred to Date	2
Total Expected Plan Cost	2
Corporate
Restructuring Reserve [Roll Forward]
Accrued July 31, 2023	0
Initial Costs	116
Cash Payments	0
Non-Cash Items	(24)
Accrued July 31, 2024	92	$ 0
Total Costs Incurred to Date	116
Total Expected Plan Cost	$ 125