Stockholders' Equity (Details) (USD $)	3 Months Ended	6 Months Ended
	Jul. 28, 2013	Jul. 28, 2013
Accelerated Share Repurchases [Line Items]
Cost of shares repurchased under stock repurchase program		$ 2,410,000,000
Additional Paid in Capital, Common Stock	217,300,000	217,300,000
Aggregate maximum amount of common stock to be repurchased		2,700,000,000
Accelerated Share Repurchases, Settlement (Payment) or Receipt	750,000,000	750,000,000
Treasury Stock, Shares, Acquired	36,900,000
Aggregate number of shares repurchased under stock repurchase program (in shares)		144,200,000
Authorized number of shares of common stock (in shares)	2,000,000,000	2,000,000,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount		285,700,000
Par value of common stock	$ 0.001	$ 0.001
Repurchase of Equity [Member]
Accelerated Share Repurchases [Line Items]
Cost of shares repurchased under stock repurchase program	$ 532,700,000