v2.4.0.6
Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of stock option activity
The following table summarizes the stock option activity for the three months ended March 31, 2013:
 
 
Number of
Shares
 
Weighted Average
Exercise
Price per Share
 
Weighted Average
Remaining
Contractual Term
(years)
 
Aggregate
Intrinsic
Value
Outstanding at December 31, 2012
13.7

 
$
27.51

 
 
 
 
Granted
2.9

 
31.12

 
 
 
 
Exercised
(2.5
)
 
25.82

 
 
 
$
14.0

Forfeited or expired
(0.2
)
 
28.93

 
 
 
 
Outstanding at March 31, 2013
13.9

 
$
28.53

 
4.7
 
$
62.2

Exercisable at March 31, 2013
7.2

 
$
27.03

 
3.5
 
$
42.8

Restricted stock unit and restricted stock activity
The following table summarizes the restricted stock unit and restricted stock activity for the three months ended March 31, 2013: 
 
Number of
Restricted Stock
Units and Shares of
Restricted Stock
(in thousands)
 
Weighted Average
Grant Date
Fair Value per
Share
 
Weighted  Average
Remaining
Contractual
Term (years)
 
Aggregate
Intrinsic
Value
Other stock awards at December 31, 2012
905.3

 
$
27.51

 
 
 
 
Granted
312.7

 
30.33

 
 
 
 
Vested and issued
(59.7
)
 
27.14

 
 
 
 
Forfeited

 

 
 
 
 
Other stock awards at March 31, 2013
1,158.3

 
$
28.30

 
0.8
 
$
38.2

Vested and unissued at March 31, 2013
741.1

 
$
21.81