XML 71 R13.htm IDEA: XBRL DOCUMENT v2.4.1.9
Stock Compensation Plans
3 Months Ended
Mar. 31, 2015
Stock Compensation Plans [Abstract]  
Stock Compensation Plans
7. STOCK COMPENSATION PLANS

As of March 31, 2015, 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
2015
 
2014
Restricted stock
$9
 
$10
Stock options
 
Total stock-based compensation (pre-tax)
9
 
10
Tax benefit
(3)
 
(4)
Total stock-based compensation (net of tax)
$6
 
$6


Stock-based compensation expense is recognized in the financial statements based upon fair value. During the three months ended March 31, 2015 and 2014, the Company did not grant any stock options. As of March 31, 2015, the total unrecognized compensation cost of $112 million related to unvested restricted stock grants is expected to be recognized over a weighted average period of approximately 1.4 years.