DEFERRED REVENUE - Changes in Deferred Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2020	Aug. 02, 2019	Jul. 31, 2020	Aug. 02, 2019	Jan. 31, 2020
Deferred revenue:
Deferred revenue at beginning of period	$ 27,617	$ 24,178	$ 27,800	$ 24,010
Revenue deferrals	6,550	5,975	12,095	10,875
Revenue recognized	(5,376)	(4,805)	(10,843)	(9,537)
Other	0	0	(261)	0
Deferred revenue at end of period	28,791	25,348	28,791	25,348
Short-term deferred revenue	15,341	13,568	15,341	13,568	$ 14,881
Long-term deferred revenue	$ 13,450	$ 11,780	$ 13,450	$ 11,780	$ 12,919