Leases (Lease Cash Flow) (Details) - USD ($) $ in Millions	6 Months Ended
	Jul. 31, 2020	Aug. 02, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 81	$ 83
Operating cash flows from finance leases	1	0
Financing cash flows from finance leases	1	1	[1]
ROU assets obtained in exchange for lease liabilities:
Operating leases	100	114
Finance leases	$ 1	$ 63

[1] Adjusted to reflect the recast of prior period information due to the Pivotal Software, Inc. (“Pivotal”) acquisition in fiscal 2020, which was accounted for as a transaction between entities under common control (refer to Note A).