Income Taxes - Cash Income Taxes Paid (Details) - USD ($) $ in Millions	12 Months Ended
Jul. 31, 2026	Jul. 31, 2025	Jul. 31, 2024
Effective Income Tax Rate Reconciliation [Line Items]
U.S. federal	$ (6)	$ 1,105	$ 1,659
Foreign
Total cash paid for income taxes, net of refunds	281	1,408	1,881
California
Effective Income Tax Rate Reconciliation [Line Items]
U.S. state and local	51	31	(4)
New York
Effective Income Tax Rate Reconciliation [Line Items]
U.S. state and local	25	23	20
Pennsylvania
Effective Income Tax Rate Reconciliation [Line Items]
U.S. state and local	18	15	14
Other
Effective Income Tax Rate Reconciliation [Line Items]
U.S. state and local	162	191	161
India
Foreign
Foreign	24	21	24
Other
Foreign
Foreign	$ 7	$ 22	$ 7

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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