Fair Value Measurements Fair Value Measurements Narrative (Details) - USD ($) $ in Millions	Jul. 31, 2022	Aug. 01, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents, at Carrying Value	$ 27	$ 0
Debt, Long-term and Short-term, Combined Amount	4,810	5,058
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents, at Carrying Value	27	0
Debt, Long-term and Short-term, Combined Fair Value	$ 4,637	$ 5,613