XML 68 R49.htm IDEA: XBRL DOCUMENT v2.4.0.6
Stock-Based Compensation (Narrative) (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
12 Months Ended
Jan. 28, 2012
years
Jan. 29, 2011
Jan. 30, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Authorized 18.5    
Available for grant 16.1    
Intrinsic value of options exercised $ 16 $ 25 $ 20
Closing stock price $ 46.69    
Aggregate fair value of awards at the time of vesting 16 12 3
Total share-based compensation expense 57 66 64
Total unrecognized share-based compensation expense for all share-based payment plans $ 146    
Weighted average period, years 3.1    
Prior 2009 [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Minimum vesting term, years four    
Employee Stock Option [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
General term of a elected director, years one    
Employee Stock Option [Member] | After 2005 [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Term of options granted, years 7    
Employee Stock Option [Member] | Prior 2006 [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Term of options granted, years 15    
Employee Stock Option [Member] | Director [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Term of options granted, years 10    
Nonvested Stock Awards [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
General term of a elected director, years one    
Vesting term, years five