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Stock-Based Compensation and Benefit Plans, Other Information (Details 2) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Feb. 03, 2012
Jan. 28, 2011
Jan. 29, 2010
Other information for stock options      
Total fair value of options vested $ 56 $ 13 $ 0
Total intrinsic value of options exercised $ 27 $ 7 $ 0