Earnings Per Share (Computation of Basic and Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	May 01, 2021	May 02, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income/(loss)	$ 202	$ (110)
Weighted-average common shares outstanding	103.6	104.3
Dilutive effect of potential common shares	1.4
Weighted-average common shares outstanding assuming dilution	105.0	104.3
Earnings per share - basic	$ 1.95	$ (1.06)
Earnings per share - diluted	$ 1.93	$ (1.06)
Stock Option Plans [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive share-based awards excluded from diluted calculation	1.7	2.7