Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Jul. 29, 2023	Jul. 30, 2022	Jul. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 12,613	$ 11,812	$ 10,591
Available-for-sale investments:
Change in net unrealized gains and losses, net of tax benefit (expense) of $35, $174, and $46 for fiscal 2023, 2022, and 2021, respectively	(78)	(557)	(95)
Net (gains) losses reclassified into earnings, net of tax expense (benefit) of $(4), $5, and $15 for fiscal 2023, 2022, and 2021, respectively	17	(4)	(38)
Total available-for-sale investments	(61)	(561)	(133)
Cash flow hedging instruments:
Change in unrealized gains and losses, net of tax benefit (expense) of $(7), $(20), and $(4) for fiscal 2023, 2022, and 2021, respectively	22	67	16
Net (gains) losses reclassified into earnings, net of tax (benefit) expense of $15, $7, and $3 for fiscal 2023, 2022, and 2021, respectively	(48)	(22)	(11)
Total cash flow hedging instruments	(26)	45	5
Net change in cumulative translation adjustment and actuarial gains and losses, net of tax benefit (expense) of $19, $(44), and $(2) for fiscal 2023, 2022, and 2021, respectively	134	(689)	230
Other comprehensive income (loss)	47	(1,205)	102
Comprehensive income	$ 12,660	$ 10,607	$ 10,693