Basis of Presentation (COVID-19 Related Asset Impairment Charges) (Details) - USD ($) $ in Millions		3 Months Ended	6 Months Ended
		Aug. 01, 2020	Jul. 31, 2021	Aug. 01, 2020
Property, Plant and Equipment [Line Items]
Long-lived asset impairment	[1]	$ 2		$ 96
Operating lease ROU asset impairment	[1]	18		41
Total asset impairment		20	$ 0	137
Applicable long-lived assets [Member]
Property, Plant and Equipment [Line Items]
Carrying value of applicable assets after impairment		14		14
Applicable operating lease ROU assets [Member]
Property, Plant and Equipment [Line Items]
Carrying value of applicable assets after impairment		$ 6		$ 6

[1] As of August 1, 2020, the carrying value of the applicable long-lived and ROU assets after impairment was $14 and $6.