Leases - Supplemental Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 29, 2023	Jul. 30, 2022
Leases [Abstract]
Cash paid for amounts included in the measurement of lease liabilities — operating cash flows	$ 387	$ 408
Right-of-use assets obtained in exchange for operating leases liabilities	$ 326	$ 331