Leases (Other Information) (Details) $ in Millions	3 Months Ended	6 Months Ended
	Aug. 03, 2019 USD ($)	Aug. 03, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 203	$ 404
Operating cash flows from finance leases		1
Financing cash flows from finance leases	4	8
Lease assets obtained in exchange for new lease liabilities:
Operating leases	247	394
Finance leases	$ 2	$ 4
Weighted average remaining lease term:
Operating leases	5 years 4 months 24 days	5 years 4 months 24 days
Finance leases	5 years 2 months 12 days	5 years 2 months 12 days
Weighted average discount rate:
Operating leases	3.40%	3.40%
Finance leases	4.40%	4.40%