Share Repurchase Activity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
		Oct. 31, 2020	Nov. 02, 2019	Oct. 31, 2020	Nov. 02, 2019
Disclosure Share Repurchase Activity [Abstract]
Number of shares repurchased	[1]	0.0	2.9	0.0	7.5
Total cost		$ 0	$ 50	$ 0	$ 150
Average per share cost including commissions (in dollars per share)		$ 0	$ 17.17	$ 0	$ 19.85

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