CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 27, 2019	Oct. 28, 2018	Oct. 27, 2019	Oct. 28, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 899	$ 1,230	$ 1,845	$ 3,575
Available-for-sale securities:
Net change in unrealized gain	0	3	9	6
Reclassification adjustments for net realized gain included in net income	0	0	0	1
Net change in unrealized gain	0	3	9	7
Cash flow hedges:
Net unrealized gain (loss)	0	1	4	(7)
Reclassification adjustments for net realized loss included in net income	(2)	(5)	(4)	(6)
Net change in unrealized loss	(2)	(4)	0	(13)
Other comprehensive income (loss), net of tax	(2)	(1)	9	(6)
Total comprehensive income	$ 897	$ 1,229	$ 1,854	$ 3,569