Leases (Components Of Lease Cost) (Details) - USD ($) $ in Millions		3 Months Ended	6 Months Ended
		Aug. 03, 2019	Aug. 03, 2019
Leases [Abstract]
Operating lease cost		$ 68	$ 138
Variable lease cost	[1]	13	25
Sublease income		(2)	(4)
Total lease cost		$ 79	$ 159

[1] Variable lease cost includes short-term lease cost, which was immaterial for the quarter and six months ended August 3, 2019.