Fair Value Measurements Fair Value Measurements Narrative (Details) - USD ($) $ in Millions	Jan. 26, 2025	Jul. 28, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents, at Carrying Value	$ 170	$ 25
Debt, Long-term and Short-term, Combined Amount	7,675	7,184
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	170	25
Debt Instrument, Fair Value Disclosure	$ 7,291	$ 6,866