Net Income (Loss) Per Share (Details) - USD ($) shares in Thousands, $ in Millions		3 Months Ended		9 Months Ended
		Oct. 31, 2015	Nov. 01, 2014	Oct. 31, 2015	Nov. 01, 2014
Earnings Per Share [Abstract]
Stock Repurchased During Period, Shares		2,500
Stock Repurchased During Period, Value		$ 50
Weighted Average Shares Outstanding And Anti Dilutive Shares [Abstract]
Shares of common stock issued		103,300	103,300	103,300	103,300
Weighted-average treasury shares		(34,434)	(32,486)	(33,937)	(30,723)
Weighted-average — basic shares		68,866	70,814	69,363	72,577
Dilutive effect of share-based compensation awards		399	1,314	0	1,293
Weighted-average — diluted shares		69,265	72,128	69,363	73,870
Anti-dilutive shares (1)	[1]	10,205	5,566	12,154	5,621

[1] Reflects the total number of shares related to outstanding share-based compensation awards that have been excluded from the computation of net income (loss) per diluted share because the impact would have been anti-dilutive.