Employee Benefit Plans - Summary of Restricted Stock and Stock Unit Awards (Details) - Restricted Stock/Stock Units - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Jul. 27, 2024	Jul. 29, 2023	Jul. 30, 2022
Restricted Stock/ Stock Units
Unvested, Beginning balance (in shares)	122	97	94
Granted and assumed (in shares)	63	72	52
Vested (in shares)	(58)	(39)	(37)
Canceled/forfeited/other (in shares)	(10)	(8)	(12)
Unvested, Ending balance (in shares)	117	122	97
Weighted-Average Grant Date Fair Value per Share
Unvested, Beginning balance (in dollars per share)	$ 44.04	$ 46.67	$ 42.93
Granted and assumed (in dollars per share)	48.97	42.08	50.06
Vested (in dollars per share)	43.46	46.69	42.27
Canceled/forfeited/other (in dollars per share)	45.65	45.17	45.63
Unvested, Ending balance (in dollars per share)	$ 46.86	$ 44.04	$ 46.67
Aggregate Fair  Value
Vested	$ 2,906	$ 1,746	$ 1,979