Share Repurchase (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	12 Months Ended			1 Months Ended	12 Months Ended
	Jan. 28, 2012	Jan. 29, 2011	Jan. 30, 2010	Nov. 30, 2007 2007 Share Repurchase Program	Jan. 28, 2012 2012 Share Repurchase Program	Jan. 28, 2012 Prepaid forward contracts market value	Jan. 29, 2011 Prepaid forward contracts market value	Jan. 30, 2010 Prepaid forward contracts market value	Jan. 28, 2012 Cash investment	Jan. 29, 2011 Cash investment	Jan. 30, 2010 Cash investment
Share Repurchase Information
Amount approved by board of directors for share repurchase program				$ 10,000,000,000	$ 5,000,000,000
Remaining capacity on share repurchase plan	279,000,000
Total Number of Shares Purchased	37.2	47.8	9.9
Repurchase of stock, average price per share (in dollars per share)	$ 50.89	$ 52.44	$ 48.54
Total Investment	1,894,000,000	2,508,000,000	479,000,000
Stock repurchased, delivered upon settlement of prepaid forward contracts (in shares)	1.0	1.1	1.5
Repurchase of stock	1,894,000,000	2,514,000,000	482,000,000						52,000,000	56,000,000	56,000,000
Stock repurchased, delivered upon settlement of prepaid forward contracts						$ 52,000,000	$ 61,000,000	$ 60,000,000