GOODWILL AND INTANGIBLE ASSETS - Intangible Assets (Details) - USD ($) $ in Millions	Oct. 28, 2016	Jan. 29, 2016
Finite-Lived Intangible Assets, Net [Abstract]
Gross	$ 38,654	$ 11,723
Accumulated Amortization	(6,727)	(4,581)
Net	31,927	7,142
Total intangible assets
Gross	43,298	13,158
Accumulated Amortization	(6,727)	(4,581)
Net	36,571	8,577
In-process research and development
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	890	0
Trade names
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	3,754	1,435
Customer relationships
Finite-Lived Intangible Assets, Net [Abstract]
Gross	22,706	9,869
Accumulated Amortization	(4,895)	(3,600)
Net	17,811	6,269
Total intangible assets
Accumulated Amortization	(4,895)	(3,600)
Developed technology
Finite-Lived Intangible Assets, Net [Abstract]
Gross	14,552	1,536
Accumulated Amortization	(1,667)	(871)
Net	12,885	665
Total intangible assets
Accumulated Amortization	(1,667)	(871)
Trade names
Finite-Lived Intangible Assets, Net [Abstract]
Gross	1,268	318
Accumulated Amortization	(164)	(110)
Net	1,104	208
Total intangible assets
Accumulated Amortization	(164)	(110)
Leasehold assets (liabilities)
Finite-Lived Intangible Assets, Net [Abstract]
Gross	128	0
Accumulated Amortization	(1)	0
Net	127	0
Total intangible assets
Accumulated Amortization	$ (1)	$ 0