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Stock-based Compensation (Tables)
 3 Months Ended
Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock-based Compensation
The following table summarizes the Company’s stock-based compensation expense for the three months ended March 31, 2017 and 2016.
 
Three Months Ended
 
March 31,
 
2017
 
2016
RSUs and PSUs
$
33

 
$
32

Stock options
7

 
7

Stock-based compensation expense, before income taxes
40

 
39

Related tax benefit
(15
)
 
(15
)
Stock-based compensation expense, net of tax benefit
$
25

 
$
24