Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022	Jul. 31, 2022
Income Tax Disclosure [Abstract]
Excess tax benefits on share-based compensation	$ 17	$ 26	$ 15	$ 135
Effective tax rate	24.00%	24.00%	23.00%	20.00%
Effective tax rate, excluding discrete tax benefits	24.00%	26.00%	24.00%	26.00%
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	$ 85		$ 85		$ 89

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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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.

+ References

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Amount recognized for uncertainty in income taxes classified as noncurrent.

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-SubTopic 10
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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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