Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2023	Jan. 31, 2022	Jul. 31, 2022
Income Tax Disclosure [Abstract]
Excess tax benefits on share-based compensation	$ 9	$ 62	$ 2	$ 109
Effective tax rate	26.00%		20.00%	25.00%
Income tax provision (benefit)	$ 60	(70)	$ 52	$ (60)
Income before income taxes	228	$ 30	$ 260	$ 268
Effective tax rate, excluding discrete tax benefits		25.00%	24.00%
Total amount of unrecognized tax benefits					$ 216
Favorable net impact to income tax expense due to recognition of tax benefits	123		$ 123
Long-term liability for uncertain tax positions	$ 89		$ 89		$ 89