CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 28, 2019	Jul. 29, 2018	Jul. 28, 2019	Jul. 29, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 552	$ 1,101	$ 947	$ 2,345
Available-for-sale securities:
Net change in unrealized gain	1	6	9	3
Reclassification adjustments for net realized gain included in net income	0	0	0	1
Net change in unrealized gain	1	6	9	4
Cash flow hedges:
Net unrealized gain (loss)	0	(4)	4	(8)
Reclassification adjustments for net realized gain (loss) included in net income	0	(2)	(2)	(1)
Net change in unrealized gain (loss)	0	(6)	2	(9)
Other comprehensive income (loss), net of tax	1	0	11	(5)
Total comprehensive income	$ 553	$ 1,101	$ 958	$ 2,340