Summary of Significant Accounting Policies (Schedule Of Basic And Diluted EPS) (Details) - $ / shares shares in Thousands	3 Months Ended								12 Months Ended
	Jan. 28, 2017	Oct. 29, 2016	Jul. 30, 2016	Apr. 30, 2016	Jan. 30, 2016	Oct. 31, 2015	Aug. 01, 2015	May 02, 2015	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
Accounting Policies [Abstract]
Basic (in shares)									392,124	403,034	413,553
Basic (in dollars per share)	$ 0.77	$ 0.63	$ 0.72	$ 0.73	$ 0.66	$ 0.54	$ 0.64	$ 0.69	$ 2.85	$ 2.53	$ 2.24
Effect of dilutive common stock equivalents (in shares)									2,834	3,371	4,524
Effect of dilutive common stock equivalents (in dollars per share)									$ (0.02)	$ (0.02)	$ (0.03)
Diluted (in shares)									394,958	406,405	418,077
Diluted (in dollars per share)	$ 0.77	$ 0.62	$ 0.71	$ 0.73	$ 0.66	$ 0.53	$ 0.63	$ 0.69	$ 2.83	$ 2.51	$ 2.21