Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 29, 2021	Jan. 31, 2020
Leases
Weighted-average remaining lease term	9 years 10 months 24 days
Weighed average discount rate	3.90%
Cash paid for operating leases	$ 1,390	$ 1,280
Operating lease cost	$ 1,380	$ 1,270
Maximum
Leases
Typical period of primary lease term for operating lease, build-to-suit, maximum	15 years