Leases (Other Information) (Details) $ in Millions	3 Months Ended	9 Months Ended
	Nov. 02, 2019 USD ($)	Nov. 02, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 204	$ 608
Operating cash flows from finance leases		1
Financing cash flows from finance leases	3	11
Lease assets obtained in exchange for new lease liabilities:
Operating leases	157	551
Finance leases	$ 4	$ 8
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	4.20%	4.20%