CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 28, 2018	Oct. 29, 2017	Oct. 28, 2018	Oct. 29, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 1,230	$ 838	$ 3,575	$ 1,928
Available-for-sale securities:
Net unrealized gain (loss)	3	(3)	6	2
Reclassification adjustments for net realized gain included in net income	0	1	1	1
Net change in unrealized gain (loss)	3	(2)	7	3
Cash flow hedges:
Net unrealized gain (loss)	1	(1)	(7)	(3)
Reclassification adjustments for net realized gain (loss) included in net income	(5)	1	(6)	3
Net change in unrealized loss	(4)	0	(13)	0
Other comprehensive income (loss), net of tax	(1)	(2)	(6)	3
Total comprehensive income	$ 1,229	$ 836	$ 3,569	$ 1,931