Earnings Per Share (Computation Of Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Aug. 03, 2019	Aug. 04, 2018	Aug. 03, 2019	Aug. 04, 2018
Earnings Per Share [Abstract]
Net earnings	$ 141	$ 162	$ 177	$ 249
Basic shares (in shares)	155.0	167.8	155.0	167.8
Dilutive effect of common stock equivalents (in shares)	0.6	2.5	0.9	2.5
Diluted shares (in shares)	155.6	170.3	155.9	170.3
Earnings per basic share (in dollars per share)	$ 0.91	$ 0.97	$ 1.14	$ 1.48
Earnings per diluted share (in dollars per share)	$ 0.90	$ 0.95	$ 1.14	$ 1.46
Anti-dilutive common stock equivalents (in shares)	11.5	5.2	10.4	7.4