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Stock Compensation Plans
3 Months Ended
Mar. 31, 2014
Stock Compensation Plans [Abstract]  
Stock Compensation Plans [Text Block]
7. STOCK COMPENSATION PLANS
As of March 31, 2014, the Company’s primary types of stock-based compensation were restricted stock and stock options. Stock-based compensation expense for the following periods was:
In millions
Three months ended March 31
2014
 
2013
Restricted stock
$10
 
$9
Stock options
 
1
Total stock-based compensation (pre-tax)
10
 
10
Tax benefit
(4)
 
(3)
Total stock-based compensation (net of tax)
$6
 
$7


Stock-based compensation expense is recognized in the financial statements based upon fair value. During the three months ended March 31, 2014 and 2013, the Company did not grant any stock options. As of March 31, 2014, the total unrecognized compensation cost of $97 million related to unvested restricted stock grants is expected to be recognized over a weighted average period of approximately 1.4 years.