Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 25, 2025	Jan. 27, 2024	Jan. 25, 2025	Jan. 27, 2024
Statement of Comprehensive Income [Abstract]
Net income	$ 2,428	$ 2,634	$ 5,139	$ 6,272
Available-for-sale investments:
Change in net unrealized gains and losses, net of tax benefit (expense) of $0 and $(17) for the second quarter and first six months of fiscal 2025, respectively, and $(73) and $(33) for the corresponding periods of fiscal 2024, respectively	4	229	58	99
Net (gains) losses reclassified into earnings, net of tax (benefit) expense of $(17) and $(23) for the second quarter and first six months of fiscal 2025, respectively, and $(5) and $(9) for the corresponding periods of fiscal 2024, respectively	3	18	22	34
Total- Available-for-sale investments	7	247	80	133
Cash flow hedging instruments:
Change in unrealized gains and losses, net of tax benefit (expense) of $(13) and $(15) for the second quarter and first six months of fiscal 2025, respectively, and $0 and $(9) for the corresponding periods of fiscal 2024, respectively	43	1	50	30
Net (gains) losses reclassified into earnings, net of tax (benefit) expense of $3 and $5 for the second quarter and first six months of fiscal 2025, respectively, and $2 and $5 for the corresponding periods of fiscal 2024, respectively	(12)	(9)	(19)	(18)
Total- Cash flow hedging instruments	31	(8)	31	12
Net change in cumulative translation adjustment and actuarial gains and losses net, of tax benefit (expense) of $0 for each of the second quarter and first six months of fiscal 2025, and $0 and $1 for the corresponding periods of fiscal 2024, respectively	(155)	274	(174)	(82)
Other comprehensive income (loss)	(117)	513	(63)	63
Comprehensive income	$ 2,311	$ 3,147	$ 5,076	$ 6,335