Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
Oct. 31, 2024	Oct. 31, 2023	Jul. 31, 2024
Income Tax Disclosure [Abstract]
Tax shortfalls (benefits) on share-based compensation	$ (28)	$ (28)
Effective tax rate	8.00%	9.00%
Effective tax rate, excluding discrete tax benefits	24.00%	24.00%
Total amount of unrecognized tax benefits			$ 327
Favorable net impact to income tax expense due to recognition of tax benefits			210
Long-term liability for uncertain tax positions	$ 66		$ 66

Effective Income Tax Rate Reconciliation, Excluding Discrete Tax Benefits, Percent

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to expense for award under share-based payment arrangement. Excludes expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.

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Amount recognized for uncertainty in income taxes classified as noncurrent.

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Amount of unrecognized tax benefits.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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