Earnings Per Share (Computation of Basic and Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Nov. 02, 2019	Nov. 03, 2018	Nov. 02, 2019	Nov. 03, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income/(loss)	$ 125	$ 130	$ 357	$ 383
Weighted-average common shares outstanding	106.9	114.5	110.0	116.6
Dilutive effect of potential common shares	0.3	0.5	0.5	0.5
Weighted-average common shares outstanding assuming dilution	107.2	115.0	110.5	117.1
Earnings per share - basic	$ 1.16	$ 1.14	$ 3.24	$ 3.29
Earnings per share - diluted	$ 1.16	$ 1.14	$ 3.23	$ 3.28
Stock Option Plans [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive share-based awards excluded from diluted calculation	2.4	2.0	2.2	1.9