Earnings Per Share, Share Repurchases and Dividends - Schedule of Weighted Average Shares Outstanding (Details) - shares shares in Millions	12 Months Ended
	Jan. 29, 2021	Jan. 31, 2020	Feb. 01, 2019
Computation Of Earnings Per Share [Line Items]
Basic weighted-average number of shares outstanding (in shares)	58.1	58.4	43.4
Dilutive common share equivalents - stock options and other stock-based awards (in shares)	0.6	0.6	0.7
Diluted weighted-average number of shares outstanding (in shares)	58.7	59.0	44.1
Stock options
Computation Of Earnings Per Share [Line Items]
Antidilutive stock options excluded (in shares)	0.3	0.3	0.2