Stock-Based Compensation - Schedule of Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Jan. 29, 2021	Jan. 31, 2020
Shares of stocks under stock options
Outstanding, beginning balance (in shares)	0.7
Options granted (in shares)	0.2
Options forfeited or expired (in shares)	0.0
Options exercised (in shares)	(0.2)
Outstanding, ending balance (in shares)	0.7	0.7
Options exercisable, ending balance (in shares)	0.5
Options vested and expected to vest, ending balance (in shares)	0.7
Weighted-average exercise price
Outstanding beginning balance (in dollars per share)	$ 60.47
Options granted (in dollars per share)	74.57
Options forfeited or expired (in dollars per share)	0
Options exercised (in dollars per share)	40.82
Outstanding ending balance (in dollars per share)	68.57	$ 60.47
Options exercisable (in dollars per share)	64.91
Vested and expected to vest in the future (in dollars per share)	$ 68.48
Weighted-average remaining contractual term
Outstanding	3 years 10 months 24 days	3 years 6 months
Options exercisable	2 years 9 months 18 days
Vested and expected to vest	3 years 9 months 18 days
Aggregate intrinsic value
Options outstanding	$ 20	$ 20
Options exercisable	14
Vested and expected to vest	$ 19