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]
Repurchase of common stock (in shares)	(23)
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]
Net income	6,272			6,272
Other comprehensive income (loss)	63				63
Issuance of common stock (in shares)		43
Issuance of common stock	349		349
Repurchase of common stock (in shares)		(48)
Repurchase of common stock	(2,506)		(528)	(1,978)
Shares repurchased for tax withholdings on vesting of restricted stock units and other (in shares)		(11)
Shares repurchased for tax withholdings on vesting of restricted stock units and other	(581)		(581)
Cash dividends declared	(3,163)			(3,163)
Share-based compensation	1,463		1,463
Other	1		10	(9)
Ending balance (in shares) at Jan. 27, 2024		4,050
Ending balance at Jan. 27, 2024	46,251		45,002	2,761	(1,512)
Beginning balance (in shares) at Oct. 28, 2023		4,049
Beginning balance at Oct. 28, 2023	45,210		44,546	2,689	(2,025)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,634			2,634
Other comprehensive income (loss)	513				513
Issuance of common stock (in shares)		34
Issuance of common stock	$ 349		349
Repurchase of common stock (in shares)	(25)	(25)
Repurchase of common stock	$ (1,254)		(279)	(975)
Shares repurchased for tax withholdings on vesting of restricted stock units and other (in shares)		(8)
Shares repurchased for tax withholdings on vesting of restricted stock units and other	(425)		(425)
Cash dividends declared	(1,583)			(1,583)
Share-based compensation	802		802
Other	5		9	(4)
Ending balance (in shares) at Jan. 27, 2024		4,050
Ending balance at Jan. 27, 2024	46,251		45,002	2,761	(1,512)
Beginning balance (in shares) at Jul. 27, 2024		4,007
Beginning balance at Jul. 27, 2024	$ 45,457		45,800	1,087	(1,430)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase of common stock (in shares)	(40)
Ending balance (in shares) at Oct. 26, 2024		3,974
Ending balance at Oct. 26, 2024	$ 45,277		45,991	662	(1,376)
Beginning balance (in shares) at Jul. 27, 2024		4,007
Beginning balance at Jul. 27, 2024	45,457		45,800	1,087	(1,430)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	5,139			5,139
Other comprehensive income (loss)	(63)				(63)
Issuance of common stock (in shares)		44
Issuance of common stock	320		320
Repurchase of common stock (in shares)		(61)
Repurchase of common stock	(3,239)		(706)	(2,533)
Shares repurchased for tax withholdings on vesting of restricted stock units and other (in shares)		(13)
Shares repurchased for tax withholdings on vesting of restricted stock units and other	(649)		(649)
Cash dividends declared	(3,185)			(3,185)
Share-based compensation	1,748		1,748
Other	2		8	(6)
Ending balance (in shares) at Jan. 25, 2025		3,977
Ending balance at Jan. 25, 2025	45,530		46,521	502	(1,493)
Beginning balance (in shares) at Oct. 26, 2024		3,974
Beginning balance at Oct. 26, 2024	45,277		45,991	662	(1,376)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,428			2,428
Other comprehensive income (loss)	(117)				(117)
Issuance of common stock (in shares)		33
Issuance of common stock	$ 320		320
Repurchase of common stock (in shares)	(21)	(21)
Repurchase of common stock	$ (1,236)		(244)	(992)
Shares repurchased for tax withholdings on vesting of restricted stock units and other (in shares)		(9)
Shares repurchased for tax withholdings on vesting of restricted stock units and other	(475)		(475)
Cash dividends declared	(1,593)			(1,593)
Share-based compensation	921		921
Other	5		8	(3)
Ending balance (in shares) at Jan. 25, 2025		3,977
Ending balance at Jan. 25, 2025	$ 45,530		$ 46,521	$ 502	$ (1,493)