Earnings Per Share (Computation Of Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	May 04, 2019	May 05, 2018
Earnings Per Share [Abstract]
Net earnings	$ 37	$ 87
Basic shares (in shares)	155.0	167.8
Dilutive effect of common stock equivalents (in shares)	1.2	2.4
Diluted shares (in shares)	156.2	170.2
Earnings per basic share (in dollars per share)	$ 0.24	$ 0.52
Earnings per diluted share (in dollars per share)	$ 0.23	$ 0.51
Anti-dilutive common stock equivalents (in shares)	9.3	9.6