Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Jul. 26, 2025	Jul. 27, 2024	Jul. 29, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 10,180	$ 10,320	$ 12,613
Available-for-sale investments:
Change in net unrealized gains and losses, net of tax benefit (expense) of $(31), $(47), and $35 for fiscal 2025, 2024, and 2023, respectively	121	146	(78)
Net (gains) losses reclassified into earnings, net of tax expense (benefit) of $(37), $(14), and $(4) for fiscal 2025, 2024, and 2023, respectively	63	53	17
Total available-for-sale investments	184	199	(61)
Cash flow hedging instruments:
Change in unrealized gains and losses, net of tax benefit (expense) of $(7), $(30), and $(7) for fiscal 2025, 2024, and 2023, respectively	22	98	22
Net (gains) losses reclassified into earnings, net of tax (benefit) expense of $11, $12, and $15 for fiscal 2025, 2024, and 2023, respectively	(36)	(37)	(48)
Total cash flow hedging instruments	(14)	61	(26)
Net change in cumulative translation adjustment and actuarial gains and losses, net of tax benefit (expense) of $2, $2, and $19 for fiscal 2025, 2024, and 2023, respectively	306	(115)	134
Other comprehensive income (loss)	476	145	47
Comprehensive income	$ 10,656	$ 10,465	$ 12,660