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Debt (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
Debt (Narrative) (Details) - USD ($) $ in Millions	Apr. 27, 2025	Mar. 19, 2025	Nov. 22, 2024	Oct. 22, 2024	Oct. 02, 2024	Jul. 28, 2024
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 1,150
Four Point Seven Five Percent Notes Due 2035
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 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]
Debt Instrument, Face Amount					$ 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
3.95% and 3.30% Notes Due 2025 \| March 2025
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount		$ 1,150