Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 29, 2022	Jan. 23, 2021	Jan. 29, 2022	Jan. 23, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 2,973	$ 2,545	$ 5,953	$ 4,719
Available-for-sale investments:
Change in net unrealized gains and losses, net of tax benefit (expense) of $47 and $75 for the second quarter and first six months of fiscal 2022, respectively, and $0 and $17 for the corresponding periods of fiscal 2021, respectively	(138)	6	(221)	(18)
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 2022, respectively, and $2 and $7 for the corresponding periods of fiscal 2021, respectively	(7)	(7)	(11)	(17)
Total- Available-for-sale investments	(145)	(1)	(232)	(35)
Cash flow hedging instruments:
Change in unrealized gains and losses, net of tax benefit (expense) of $(3) and $(4) for the second quarter and first six months of fiscal 2022, respectively, and $1 for each of the corresponding periods of fiscal 2021	7	(2)	14	(4)
Net (gains) losses reclassified into earnings, net of tax (benefit) expense of $1 for each of the second quarter and first six months of fiscal 2022, respectively, and $0 and $1 for the corresponding periods of fiscal 2021, respectively	(1)	(3)	(2)	(4)
Total- Cash flow hedging instruments	6	(5)	12	(8)
Net change in cumulative translation adjustment and actuarial gains and losses net of tax benefit (expense) of $0 and $9 for the second quarter and first six months of fiscal 2022, respectively, and $(2) and $(3) for the corresponding periods of fiscal 2021, respectively	(177)	235	(152)	344
Other comprehensive income (loss)	(316)	229	(372)	301
Comprehensive income	$ 2,657	$ 2,774	$ 5,581	$ 5,020