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Stock-Based Compensation (Notes)
 6 Months Ended
Jun. 30, 2015
Stock-Based Compensation [Abstract]  
Shareholders' Equity and Share-based Payments [Text Block]
Stock-Based Compensation

 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
In millions
2015
 
2014
 
2015
 
2014
Stock-based compensation:
 
 
 
 
 
 
 
Stock options
$
19

 
$
24

 
$
45

 
$
50

Restricted stock units
25

 
18

 
43

 
27

Total stock-based compensation
$
44

 
$
42

 
$
88

 
$
77



During the three months ended June 30, 2015, the Company granted 4 million stock options with a weighted average fair value of $13.88 and a weighted average fair value exercise price of $102.26. The Company had 26 million stock options outstanding as of June 30, 2015 with a weighted average exercise price of $56.31 and a weighted average contractual term of 4.25 years. During the three months ended June 30, 2015, the Company granted 2 million restricted stock units with a weighted average fair value of $102.26. The Company had 5 million restricted stock units unvested as of June 30, 2015 with a weighted average fair value of $58.81.