Portion of the amount of long-term debt issued.

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Amount of borrowing capacity currently utilized under the credit facility.

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

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Gross amount of debt extinguished.

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No definition available.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Reflects the difference between the fair value of payments made to legally extinguish a debt and its carrying value at that time. This item excludes the write-off of amounts previously capitalized as debt issuance costs.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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Description of the conditions for borrowing under the credit facility including the nature of any restrictions.

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Date the credit facility terminates, in YYYY-MM-DD format.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Weighted average interest rate of short-term debt outstanding calculated at point in time.

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Short-term Borrowing and Long-term Debt (Narratives) (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2022	Aug. 01, 2021	Aug. 02, 2020
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount	$ 32
Line of Credit Facility Utilized Borrowing Capacity	$ 1
Line of Credit Facility, Covenant Terms	minimum consolidated interest coverage ratio of consolidated adjusted EBITDA to consolidated interest expense (as each is defined in the credit facility) of not less than 3.25:1.00, measured quarterly, and customary events of default for credit facilities of this type
Payments related to extinguishment of debt	$ 453	$ 0	$ 1,769
Extinguishment of Debt, Amount			1,200
Payment for Debt Extinguishment, Net			1,765
Loss on extinguishment of debt	4	0	75
Repayments of Long-term Debt	0	921	499
Long-term borrowings	0	$ 0	1,000
Revolving Credit Facility
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,850
Line of Credit Facility, Expiration Date	Sep. 27, 2026
Replaced Revolving Credit Facility
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,850
Line of Credit Facility, Expiration Date	Nov. 02, 2023
Repayments of Lines of Credit			300
Proceeds from Lines of Credit			300
Interest Expense [Member]
Debt Instrument [Line Items]
Loss on extinguishment of debt	$ 4		75
Loss on Extinguishment of Debt, before Write off of Debt Issuance Cost	$ 3		65
Commercial Paper [Member]
Debt Instrument [Line Items]
Short-term Debt, Weighted Average Interest Rate, at Point in Time	2.63%	0.22%
4.25% notes, due 2021
Debt Instrument [Line Items]
Repayments of Debt			$ 500
Debt Instrument, Interest Rate, Stated Percentage			4.25%
3.30% notes, due 2021
Debt Instrument [Line Items]
Repayments of Debt		$ 321
Extinguishment of Debt, Amount			$ 329
Debt Instrument, Interest Rate, Stated Percentage		3.30%	3.30%
3.65% notes, due 2023
Debt Instrument [Line Items]
Debt Instrument, Maturity Date	Mar. 15, 2023
Extinguishment of Debt, Amount			$ 634
Debt Instrument, Interest Rate, Stated Percentage	3.65%		3.65%
3.80% notes, due 2043
Debt Instrument [Line Items]
Debt Instrument, Maturity Date	Aug. 02, 2042
Extinguishment of Debt, Amount			$ 237
Debt Instrument, Interest Rate, Stated Percentage	3.80%		3.80%
Variable Interest Rate due 2021 [Member]
Debt Instrument [Line Items]
Repayments of Debt		$ 400
8.875% notes, due 2021
Debt Instrument [Line Items]
Repayments of Debt		$ 200
Debt Instrument, Interest Rate, Stated Percentage		8.875%
Variable Interest Rate Senior Term Loan due 2021 [Member]
Debt Instrument [Line Items]
Repayments of Long-term Debt			$ 499
April 24, 2020 Debt Issuance Proceeds [Member]
Debt Instrument [Line Items]
Issuance of Debt, Amount			$ 300
2.375% notes, due 2030
Debt Instrument [Line Items]
Debt Instrument, Maturity Date	Apr. 24, 2030
Debt Instrument, Interest Rate, Stated Percentage	2.375%		2.375%
Long-term borrowings			$ 500
Debt Instrument, Redemption Price, Percentage			101.00%
3.125% notes, due 2050
Debt Instrument [Line Items]
Debt Instrument, Maturity Date	Apr. 24, 2050
Debt Instrument, Interest Rate, Stated Percentage	3.125%		3.125%
Long-term borrowings			$ 500
Debt Instrument, Redemption Price, Percentage			101.00%
2.50% notes, due 2023
Debt Instrument [Line Items]
Repayments of Debt	$ 450
Debt Instrument, Maturity Date	Aug. 02, 2022
Payments related to extinguishment of debt	$ 453
Debt Instrument, Interest Rate, Stated Percentage	2.50%