Debt (Narrative) (Details) $ in Millions	6 Months Ended
Jan. 26, 2025 USD ($)
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 1,150
Other Long-Term Debt, Current	1,150
Four Point Seven Five Percent Notes Due 2035
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 800
Debt Instrument, Interest Rate, Stated Percentage	4.75%
Debt Instrument, Maturity Date	Mar. 23, 2035
Debt Instrument, Redemption Price, Percentage	101.00%
Five Point Two Five Percent Notes Due 2054
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 350
Debt Instrument, Interest Rate, Stated Percentage	5.25%
Debt Instrument, Maturity Date	Oct. 13, 2054
Debt Instrument, Redemption Price, Percentage	101.00%
Variable Interest Rate Due 2025 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 400
Variable Interest Rate Due 2025 [Member] \| October 2024
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount	200
Variable Interest Rate Due 2025 [Member] \| November 2024
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount	$ 200

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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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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Amount of long-term debt classified as other, payable within one year or the operating cycle, if longer.

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