Earnings Per Share (Details) - $ / shares	3 Months Ended		9 Months Ended
	Oct. 31, 2015	Nov. 01, 2014	Oct. 31, 2015	Nov. 01, 2014
Earnings Per Share [Abstract]
Weighted average shares excluded from calculation of diluted EPS	28,400	3,700	8,600	11,500
Basic (in shares)	401,494,000	411,732,000	404,636,000	414,920,000
Basic (in dollars per share)	$ 0.54	$ 0.47	$ 1.87	$ 1.63
Effect of dilutive common stock equivalents, (in shares)	3,010,000	4,197,000	3,252,000	4,563,000
Effect of dilutive common stock equivalents, (in dollars per share)	$ (0.01)	$ (0.01)	$ (0.02)	$ (0.02)
Diluted (in shares)	404,504,000	415,929,000	407,888,000	419,483,000
Diluted (in dollars per share)	$ 0.53	$ 0.46	$ 1.85	$ 1.61