Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Jul. 27, 2024	Jul. 29, 2023	Jul. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 10,320	$ 12,613	$ 11,812
Available-for-sale investments:
Change in net unrealized gains and losses, net of tax benefit (expense) of $(47), $35, and $174 for fiscal 2024, 2023, and 2022, respectively	146	(78)	(557)
Net (gains) losses reclassified into earnings, net of tax expense (benefit) of $(14), $(4), and $5 for fiscal 2024, 2023, and 2022, respectively	53	17	(4)
Total available-for-sale investments	199	(61)	(561)
Cash flow hedging instruments:
Change in unrealized gains and losses, net of tax benefit (expense) of $(30), $(7), and $(20) for fiscal 2024, 2023, and 2022, respectively	98	22	67
Net (gains) losses reclassified into earnings, net of tax (benefit) expense of $12, $15, and $7 for fiscal 2024, 2023, and 2022, respectively	(37)	(48)	(22)
Total cash flow hedging instruments	61	(26)	45
Net change in cumulative translation adjustment and actuarial gains and losses, net of tax benefit (expense) of $2, $19, and $(44) for fiscal 2024, 2023, and 2022, respectively	(115)	134	(689)
Other comprehensive income (loss)	145	47	(1,205)
Comprehensive income	$ 10,465	$ 12,660	$ 10,607