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Consolidated Statements of Changes in Stockholders' Equity (USD $)
In Millions
Total
Common Stock
Treasury Stock
Paid-in Capital
Retained Earning
Accumulated Other Comprehensive Income (Loss)
Beginning Balance at Dec. 31, 2009 $ 910 $ 2 $ (311) $ 622 $ 583 $ 14
Beginning Balance (in shares) at Dec. 31, 2009   183 (14)      
Net income 301       301  
Employee stock compensation, employee stock purchase programs and option exercises (in shares)   2        
Employee stock compensation, employee stock purchase programs and option exercises 58     58    
Income tax benefit from stock compensation plans 10     10    
Purchases of treasury stock, not retired (in shares)     (3)      
Purchases of treasury stock, not retired (88)   (88)      
Pension and post-employment benefit plans, net of tax 1         1
Currency translation adjustment (3)         (3)
Ending Balance at Dec. 31, 2010 1,189 2 (399) 690 884 12
Ending Balance (in shares) at Dec. 31, 2010   185 (17)      
Net income 353       353  
Employee stock compensation, employee stock purchase programs and option exercises (in shares)   2        
Employee stock compensation, employee stock purchase programs and option exercises 60     60    
Income tax benefit from stock compensation plans 15     15    
Purchases of treasury stock, not retired (in shares)     (2)      
Purchases of treasury stock, not retired (127)   (127)      
Pension and post-employment benefit plans, net of tax 10         10
Currency translation adjustment (6)         (6)
Ending Balance at Dec. 31, 2011 1,494 2 (526) 765 1,237 16
Ending Balance (in shares) at Dec. 31, 2011   187 (19)      
Net income 419       419  
Employee stock compensation, employee stock purchase programs and option exercises (in shares)   3        
Employee stock compensation, employee stock purchase programs and option exercises 95     95    
Income tax benefit from stock compensation plans 38     38    
Purchases of treasury stock, not retired (in shares)     (5)      
Purchases of treasury stock, not retired (280)   (280)      
Pension and post-employment benefit plans, net of tax 4         4
Currency translation adjustment 9         9
Ending Balance at Dec. 31, 2012 $ 1,779 $ 2 $ (806) $ 898 $ 1,656 $ 29
Ending Balance (in shares) at Dec. 31, 2012   190 (24)