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Stock Compensation Plans (Tables)
 3 Months Ended
Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock based Compensation Plans
 
 
Three Months Ended March 31,
 
2014
2013
Stock-based compensation plans expense
$
19

$
14

Income tax benefit
(7
)
(5
)
Total stock-based compensation plans expense, after-tax
$
12

$
9