Share Repurchase Activity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
		Aug. 03, 2019	Aug. 04, 2018	Aug. 03, 2019	Aug. 04, 2018
Disclosure Share Repurchase Activity [Abstract]
Number of shares repurchased	[1]	2.7	3.2	4.6	6.4
Total cost		$ 50	$ 100	$ 100	$ 200
Average per share cost including commissions (in dollars per share)		$ 18.41	$ 30.95	$ 21.54	$ 31.08

[1] Excludes shares withheld to settle employee statutory tax withholding related to the vesting of stock units.