Annual report pursuant to Section 13 and 15(d)

Subsequent Event (Details)

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Subsequent Event (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
12 Months Ended
Jan. 28, 2012
Mar. 08, 2012
Subsequent event (Textual) [Abstract]    
Dividend declared per share to shareholders   $ 1.00
Amount of dividend   $ 62
Date of dividend declared Mar. 20, 2012  
Date of dividend to be paid May 15, 2012