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Income Taxes (Schedule of Cash Flow, Supplemental Disclosures) (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2026	Jul. 31, 2025	Jul. 31, 2024
Tax Credit Carryforward
Federal	$ 40
Total	199	$ 505	$ 342
California
Tax Credit Carryforward
State	18
All Others
Tax Credit Carryforward
State	51
Israel
Tax Credit Carryforward
Foreign	24
Netherlands
Tax Credit Carryforward
Foreign	13
India
Tax Credit Carryforward
Foreign	16
All Others
Tax Credit Carryforward
Foreign	$ 37