Share Repurchase (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	3 Months Ended		12 Months Ended	1 Months Ended		3 Months Ended
	May 04, 2013	Apr. 28, 2012	Feb. 02, 2013	Jan. 31, 2012 2012 Share Repurchase Program	Nov. 30, 2007 2007 Share Repurchase Program	May 04, 2013 Cash investment	Apr. 28, 2012 Cash investment	May 04, 2013 Prepaid forward contracts market value	Apr. 28, 2012 Prepaid forward contracts market value
Share Repurchase Information
Amount approved by board of directors for share repurchase program				$ 5,000,000,000	$ 10,000,000,000
Total Number of Shares Purchased	8.5	10.5
Repurchase of stock, average price per share (in dollars per share)	$ 64.04	$ 57.31
Total Investment	547,000,000	604,000,000
Stock repurchased, delivered upon settlement of prepaid forward contracts	0.1	0.2
Repurchase of stock	550,000,000		1,903,000,000			7,000,000	12,000,000
Stock repurchased, delivered upon settlement of prepaid forward contracts								$ 9,000,000	$ 12,000,000