Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	May 01, 2021	Apr. 25, 2020	May 01, 2021	Apr. 25, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 2,863	$ 2,774	$ 7,582	$ 8,578
Available-for-sale investments:
Change in net unrealized gains and losses, net of tax benefit (expense) of $30 and $47 for the third quarter and first nine months of fiscal 2021, respectively, and $3 and $(26) for the corresponding periods of fiscal 2020, respectively	(85)	4	(103)	143
Net (gains) losses reclassified into earnings, net of tax (benefit) expense of $5 and $12 for the third quarter and first nine months of fiscal 2021, respectively and $2 and $14 for the corresponding periods of fiscal 2020, respectively	(17)	3	(34)	(6)
Total- Available-for-sale investments	(102)	7	(137)	137
Cash flow hedging instruments:
Change in unrealized gains and losses, net of tax benefit (expense) of $(5) and $(4) for the third quarter and first nine months of fiscal 2021, and $(2) and $(1) for the corresponding periods of fiscal 2020, respectively	16	12	12	13
Net (gains) losses reclassified into earnings, net of tax (benefit) expense of $1 and $2 for the third quarter and first nine months of fiscal 2021, respectively, and $0 for each of the corresponding periods of fiscal 2020	(6)	(1)	(10)	1
Total- Cash flow hedging instruments	10	11	2	14
Net change in cumulative translation adjustment and actuarial gains and losses net of tax benefit (expense) of $2 and $(1) for the third quarter and first nine months of fiscal 2021, respectively, and $3 and $2 for the corresponding periods of fiscal 2020, respectively	22	(427)	366	(468)
Other comprehensive income (loss)	(70)	(409)	231	(317)
Comprehensive income	$ 2,793	$ 2,365	$ 7,813	$ 8,261