Debt - Schedule of Long-term Debt (Details) - USD ($) $ in Millions	Jan. 31, 2025	Jul. 31, 2024
Debt Instrument [Line Items]
Total principal balance of debt	$ 6,304	$ 6,085
Unamortized discount and debt issuance costs	(44)	(47)
Net carrying value of debt	6,260	6,038
Short-term debt	500	499
Long-term debt	5,760	5,539
Line of Credit \| Revolving Credit Facility \| Subsidiary
Debt Instrument [Line Items]
Secured revolving credit facilities	804	585
0.950% notes due July 2025 \| Senior Unsecured Notes
Debt Instrument [Line Items]
Total principal balance of debt	$ 500	500
Effective Interest Rate	1.127%
Stated interest rate	0.95%
1.350% notes due July 2027 \| Senior Unsecured Notes
Debt Instrument [Line Items]
Total principal balance of debt	$ 500	500
Effective Interest Rate	1.486%
Stated interest rate	1.35%
1.650% notes due July 2030 \| Senior Unsecured Notes
Debt Instrument [Line Items]
Total principal balance of debt	$ 500	500
Effective Interest Rate	1.767%
Stated interest rate	1.65%
5.250% notes due September 2026 \| Senior Unsecured Notes
Debt Instrument [Line Items]
Total principal balance of debt	$ 750	750
Effective Interest Rate	5.325%
Stated interest rate	5.25%
5.125% notes due September 2028 \| Senior Unsecured Notes
Debt Instrument [Line Items]
Total principal balance of debt	$ 750	750
Effective Interest Rate	5.258%
Stated interest rate	5.125%
5.200% notes due September 2033 \| Senior Unsecured Notes
Debt Instrument [Line Items]
Total principal balance of debt	$ 1,250	1,250
Effective Interest Rate	5.312%
Stated interest rate	5.20%
5.500% notes due September 2053 \| Senior Unsecured Notes
Debt Instrument [Line Items]
Total principal balance of debt	$ 1,250	$ 1,250
Effective Interest Rate	5.576%
Stated interest rate	5.50%

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as current. Excludes lease obligation.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation.

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