v2.4.1.9
Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share-based Compensation Awards, Fair Value Assumptions Used [Table Text Block]
The weighted-average fair values of the SVA units granted during the years ended December 31, 2014, 2013, and 2012 were $41.97, $45.17, and $30.35, respectively, determined using the following assumptions:
(Percents)
2014
 
2013
 
2012
Expected dividend yield
3.50
%
 
3.50
%
 
4.50
%
Risk-free interest rate
.08-.71

 
.08-.43

 
.10-.36

Range of volatilities
18.87-21.56

 
18.95-22.37

 
22.40-25.64
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
Stock option activity during the year ended December 31, 2014 is summarized below:
 
Shares of
Common Stock
Attributable to
Options
(in thousands)
 
Weighted-Average
Exercise
Price of Options
 
Weighted-Average
Remaining
Contractual Term
(in years)
 
Aggregate
Intrinsic
Value
Outstanding at January 1, 2014
16,140

 
$
66.66

 
 
 
 
Exercised
(3,670
)
 
55.86

 
 
 
 
Forfeited or expired
(10,154
)
 
72.93

 
 
 
 
Outstanding at December 31, 2014
2,316

 
56.26

 
0.9
 
$
29.6

Exercisable at December 31, 2014
2,316

 
56.26

 
0.9
 
29.6
Shareholder Value Awards [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share-based Compensation, Activity [Table Text Block]
A summary of the SVA activity is presented below:
Units Attributable to SVAs (in thousands)
2014
 
2013
 
2012
Outstanding at January 1
6,636

 
7,539

 
7,036

Granted
1,987

 
1,795

 
2,439

Issued
(2,224
)
 
(2,397
)
 
(973
)
Forfeited or expired
(300
)
 
(301
)
 
(963
)
Outstanding at December 31
6,099

 
6,636

 
7,539