SUPPLEMENTAL CONSOLIDATED FINANCIAL INFORMATION - Information on Selected Accounts (Details) - USD ($) $ in Millions	Jul. 31, 2020	Jan. 31, 2020	Aug. 02, 2019
Cash, cash equivalents, and restricted cash:
Cash and cash equivalents	$ 11,221	$ 9,302
Restricted cash - other current assets	725	730
Restricted cash - other non-current assets	107	119
Total cash, cash equivalents, and restricted cash	12,053	10,151
Inventories, net:
Production materials	1,884	1,590
Work-in-process	677	563
Finished goods	1,041	1,128
Total inventories, net	3,602	3,281
Other Assets, Noncurrent [Abstract]
Deferred and other tax assets	6,131	5,960
Operating lease right of use (“ROU”) assets	1,787	1,780
Deferred Commissions	1,025	998
Other	1,704	1,690
Total other non-current assets	10,647	10,428
Other non-current liabilities:
Deferred and other tax liabilities	2,010	3,110
Non-current operating lease liabilities	1,383	1,360
Warranty liability	140	155	$ 170
Other	1,229	758
Total other non-current liabilities	$ 4,762	$ 5,383