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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Gross amount of debt extinguished.

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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 CCYY-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 long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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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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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
	Aug. 01, 2021	Aug. 02, 2020	Jul. 28, 2019
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount	$ 36
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,850
Line of Credit Facility, Expiration Date	Nov. 02, 2023
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
Repayments of Lines of Credit		$ 300
Proceeds from Lines of Credit		300
Long-term Debt, Maturities, Repayments of Principal in Year Two	$ 1,025
Long-term Debt, Maturities, Repayments of Principal in Year Three	5
Long-term Debt, Maturities, Repayments of Principal in Year Four	1,152
Long-term Debt, Maturities, Repayments of Principal in Year Five	3
Long-term Debt, Maturities, Repayments of Principal after Year Five	2,863
Extinguishment of Debt, Amount		1,200
Payment for Debt Extinguishment, Net		1,765
Gain (Loss) on Extinguishment of Debt	0	(75)	$ 0
Repayments of Long-term Debt	921	499	702
Long-term borrowings	$ 0	1,000	$ 0
Interest Expense [Member]
Debt Instrument [Line Items]
Gain (Loss) on Extinguishment of Debt		(75)
Gain (Loss) on Extinguishment of Debt, before Write off of Debt Issuance Cost		$ (65)
Commercial Paper [Member]
Debt Instrument [Line Items]
Short-term Debt, Weighted Average Interest Rate, at Point in Time	0.22%	2.10%
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	$ 329
Debt Instrument, Interest Rate, Stated Percentage	3.30%	3.30%
Long-term Debt, Gross	$ 0	$ 321
3.65% notes, due 2023
Debt Instrument [Line Items]
Repayments of Debt		$ 634
Debt Instrument, Interest Rate, Stated Percentage	3.65%	3.65%
Long-term Debt, Gross	$ 566	$ 566
3.80% notes, due 2043
Debt Instrument [Line Items]
Repayments of Debt		$ 237
Debt Instrument, Interest Rate, Stated Percentage	3.80%	3.80%
Long-term Debt, Gross	$ 163	$ 163
Variable Interest Rate due 2021 [Member]
Debt Instrument [Line Items]
Repayments of Debt	400
Long-term Debt, Gross	0	400
8.875% notes, due 2021
Debt Instrument [Line Items]
Repayments of Debt	$ 200
Debt Instrument, Interest Rate, Stated Percentage	8.875%
Long-term Debt, Gross	$ 0	200
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]
Long-term borrowings		1,000
Issuance of Debt, Amount		$ 300
2.375% notes, due 2030
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.375%	2.375%
Long-term Debt, Gross	$ 500	$ 500
Debt Instrument, Redemption Price, Percentage		101.00%
3.125% notes, due 2050
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.125%	3.125%
Long-term Debt, Gross	$ 500	$ 500
Debt Instrument, Redemption Price, Percentage		101.00%