Consolidated Statements of Equity - USD ($) shares in Millions, $ in Millions	Total	Shares of Common Stock	Common Stock and Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Jul. 29, 2023		4,066
Beginning balance at Jul. 29, 2023	$ 44,353		$ 44,289	$ 1,639	$ (1,575)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,638			3,638
Other comprehensive income (loss)	(450)				(450)
Issuance of common stock (in shares)		9
Issuance of common stock	$ 0		0
Repurchase of common stock (in shares)	(23)	(23)
Repurchase of common stock	$ (1,252)		(249)	(1,003)
Shares repurchased for tax withholdings on vesting of restricted stock units and other (in shares)		(3)
Shares repurchased for tax withholdings on vesting of restricted stock units and other	(156)		(156)
Cash dividends declared	(1,580)			(1,580)
Share-based compensation	661		661
Other	(4)		1	(5)
Ending balance (in shares) at Oct. 28, 2023		4,049
Ending balance at Oct. 28, 2023	45,210		44,546	2,689	(2,025)
Beginning balance (in shares) at Jul. 29, 2023		4,066
Beginning balance at Jul. 29, 2023	$ 44,353		44,289	1,639	(1,575)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase of common stock (in shares)	(43)
Ending balance (in shares) at Jul. 27, 2024		4,007
Ending balance at Jul. 27, 2024	$ 45,457		45,800	1,087	(1,430)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,711			2,711
Other comprehensive income (loss)	54				54
Issuance of common stock (in shares)		11
Issuance of common stock	$ 0		0
Repurchase of common stock (in shares)	(40)	(40)
Repurchase of common stock	$ (2,003)		(462)	(1,541)
Shares repurchased for tax withholdings on vesting of restricted stock units and other (in shares)		(4)
Shares repurchased for tax withholdings on vesting of restricted stock units and other	(174)		(174)
Cash dividends declared	(1,592)			(1,592)
Share-based compensation	827		827
Other	(3)		0	(3)
Ending balance (in shares) at Oct. 26, 2024		3,974
Ending balance at Oct. 26, 2024	$ 45,277		$ 45,991	$ 662	$ (1,376)