BUSINESS COMBINATIONS, GOODWILL AND INTANGIBLE ASSETS - Intangible Assets (Details) - USD ($)	3 Months Ended			6 Months Ended
	Jul. 31, 2020	May 01, 2020	Aug. 02, 2019	Jul. 31, 2020	Aug. 02, 2019	Jan. 31, 2020
Business Acquisition [Line Items]
Gross	$ 39,110,000,000			$ 39,110,000,000		$ 39,963,000,000
Accumulated Amortization	(26,801,000,000)			(26,801,000,000)		(25,611,000,000)
Total	12,309,000,000			12,309,000,000		14,352,000,000
Total intangible assets	42,865,000,000			42,865,000,000		43,718,000,000
Intangible assets, net	16,064,000,000			16,064,000,000		18,107,000,000
Amortization expense	800,000,000		$ 1,100,000,000	1,700,000,000	$ 2,300,000,000
Impairment charges related to intangible assets acquired	0		$ 266,000,000	0	$ 266,000,000
Gain on sale of assets		$ 120,000,000
Customer relationships
Business Acquisition [Line Items]
Gross	22,392,000,000			22,392,000,000		22,950,000,000
Accumulated Amortization	(14,555,000,000)			(14,555,000,000)		(13,821,000,000)
Total	7,837,000,000			7,837,000,000		9,129,000,000
Developed technology
Business Acquisition [Line Items]
Gross	15,451,000,000			15,451,000,000		15,707,000,000
Accumulated Amortization	(11,384,000,000)			(11,384,000,000)		(10,974,000,000)
Total	4,067,000,000			4,067,000,000		4,733,000,000
Trade names
Business Acquisition [Line Items]
Gross	1,267,000,000			1,267,000,000		1,306,000,000
Accumulated Amortization	(862,000,000)			(862,000,000)		(816,000,000)
Total	405,000,000			405,000,000		490,000,000
Trade names
Business Acquisition [Line Items]
Indefinite-lived trade names	$ 3,755,000,000			$ 3,755,000,000		$ 3,755,000,000