Fair Value Measurements (Carrying Value and Estimated Fair Value of Long-Term Debt) (Details) - USD ($) $ in Millions	Jul. 30, 2022	Jul. 31, 2021
Fair Value Measurements [Abstract]
Long-term debt, Carrying value	$ 394	$ 99
Long-term debt, Fair value	313	$ 102
Debt discount	$ 6

Amount of unamortized debt discount (premium) and debt issuance costs.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant