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Stock Compensation Plans (Tables)
 9 Months Ended
Sep. 30, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock based Compensation Plans
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
 
 
2012
 
2011
 
2012
 
2011
Stock-based compensation plans (benefit)/expense
$
7

 
$
(6
)
 
$
24

 
$
8

Income tax (benefit)/expense
(2
)
 
2

 
(8
)
 
(3
)
Total stock-based compensation plans (benefit)/expense, net of tax
$
5

 
$
(4
)
 
$
16

 
$
5