Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity (Narrative) (Details)

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Shareholders' Equity (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended 12 Months Ended
Jan. 28, 2012
Jan. 28, 2012
Jan. 29, 2011
Jan. 30, 2010
Jan. 31, 2009
Stockholders' Equity Note [Abstract]          
Preferred stock, shares authorized 125,000,000 125,000,000      
Preferred stock, par value $ 0.01 $ 0.01      
Preferred stock, shares issued 0 0      
Common stock, shares authorized 1,000,000,000 1,000,000,000      
Common stock, par value $ 0.01 $ 0.01      
Common stock, shares issued 487,338,500 487,338,500 495,038,500 495,038,500 495,038,500
Common stock, shares outstanding 414,181,000 414,181,000 423,341,300 420,843,200 420,083,800
Retirement of common stock   (7,700,000)      
Stock repurchase program, additional amount authorized $ 1,000        
Stock repurchase program authorized amount   10,500      
Stock repurchased during period, shares   16,356,500      
Stock repurchased during period, value   500      
Stock repurchase program remaining authorized repurchase amount   $ 1,352