LEASES - Supplemental Information Related to Operating Leases (Details) - USD ($) $ in Millions	May 01, 2020	Jan. 31, 2020
Leases [Abstract]
Operating lease right of use (“ROU”) assets	$ 1,745	$ 1,780
Current operating lease liabilities	403	432
Non-current operating lease liabilities	1,350	1,360
Total operating lease liabilities	$ 1,753	$ 1,792
Weighted-average remaining lease term (in years)	8 years 8 months 12 days	8 years 6 months 25 days
Weighted-average discount rate	3.84%	3.81%