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	8,158			8,158
Other comprehensive income (loss)	(55)				(55)
Issuance of common stock (in shares)		54
Issuance of common stock	347		347
Repurchase of common stock (in shares)		(74)
Repurchase of common stock	(3,762)		(811)	(2,951)
Shares repurchased for tax withholdings on vesting of restricted stock units and other (in shares)		(15)
Shares repurchased for tax withholdings on vesting of restricted stock units and other	(767)		(767)
Cash dividends declared	(4,778)			(4,778)
Share-based compensation	2,274		2,274
Other	(2)		11	(13)
Ending balance (in shares) at Apr. 27, 2024		4,031
Ending balance at Apr. 27, 2024	45,768		45,343	2,055	(1,630)
Beginning balance (in shares) at Jan. 27, 2024		4,050
Beginning balance at Jan. 27, 2024	46,251		45,002	2,761	(1,512)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,886			1,886
Other comprehensive income (loss)	(118)				(118)
Issuance of common stock (in shares)		11
Issuance of common stock	$ (2)		(2)
Repurchase of common stock (in shares)	(26)	(26)
Repurchase of common stock	$ (1,256)		(283)	(973)
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	(186)		(186)
Cash dividends declared	(1,615)			(1,615)
Share-based compensation	811		811
Other	(3)		1	(4)
Ending balance (in shares) at Apr. 27, 2024		4,031
Ending balance at Apr. 27, 2024	$ 45,768		45,343	2,055	(1,630)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase of common stock (in shares)	(43)
Repurchase of common stock	$ (2,002)
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	7,630			7,630
Other comprehensive income (loss)	297				297
Issuance of common stock (in shares)		56
Issuance of common stock	320		320
Repurchase of common stock (in shares)		(86)
Repurchase of common stock	(4,743)		(1,001)	(3,742)
Shares repurchased for tax withholdings on vesting of restricted stock units and other (in shares)		(17)
Shares repurchased for tax withholdings on vesting of restricted stock units and other	(905)		(905)
Cash dividends declared	(4,812)			(4,812)
Share-based compensation	2,693		2,693
Other	(2)		9	(11)
Ending balance (in shares) at Apr. 26, 2025		3,960
Ending balance at Apr. 26, 2025	45,935		46,916	152	(1,133)
Beginning balance (in shares) at Jan. 25, 2025		3,977
Beginning balance at Jan. 25, 2025	45,530		46,521	502	(1,493)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,491			2,491
Other comprehensive income (loss)	360				360
Issuance of common stock (in shares)		12
Issuance of common stock	$ 0		0
Repurchase of common stock (in shares)	(25)	(25)
Repurchase of common stock	$ (1,504)		(295)	(1,209)
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	(256)		(256)
Cash dividends declared	(1,627)			(1,627)
Share-based compensation	945		945
Other	(4)		1	(5)
Ending balance (in shares) at Apr. 26, 2025		3,960
Ending balance at Apr. 26, 2025	$ 45,935		$ 46,916	$ 152	$ (1,133)