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Financial Services, Accretable Yield (Details 3) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Feb. 03, 2012
Jan. 28, 2011
Accretable Yield:    
Balance at beginning of period $ 137 $ 0
Additions/ Purchases 0 166
Accretion (88) (29)
Prospective yield adjustment 93 0
Balance at end of period $ 142 $ 137