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Share-based Compensation Plans (Tables)
12 Months Ended
Dec. 31, 2013
Text Block [Abstract]  
Estimated Fair Values of all SARs Applying Assumptions
The Company computed the estimated fair values of all SARs using the Black-Scholes option-pricing model applying the assumptions set forth in the following table:
 
2013
 
2012
 
2011
Expected dividend yield
3.9
%
 
3.5
%
 
3.1
%
Expected stock price volatility
24.7
%
 
32.3
%
 
33.8
%
Risk-free interest rate
0.6
%
 
0.6
%
 
2.1
%
Expected life of SARs
4 years

 
4 years

 
4 years

Stock Options and SARs Outstanding and Exercisable
The following tables summarize information about stock options and SARs outstanding and exercisable at December 31, 2013. At December 31, 2013, the fair market value of the Company’s stock used to calculate intrinsic value was $41.72 per share.
 
Options and SARs Vested and Expected to Vest
Range of
Exercise Prices
Number
Outstanding
 
Weighted-
average
Remaining
Contractual
Life
 
Weighted-
average
Exercise
Price
 
Aggregate
Intrinsic
Value
$23.69 - $28.48
802,260
 
2.1 years
 
$26.91
 
$
11,884

$29.30 - $32.03
1,100,792
 
4.9 years
 
$31.39
 
$
11,374

$32.85 - $43.83
1,101,635
 
4.3 years
 
$34.76
 
$
7,670

$23.69 - $43.83
3,004,687
 
3.9 years
 
$31.43
 
$
30,928

 
 
Options and SARs Exercisable
Range of
Exercise Prices
Number
Exercisable
 
Weighted-
average
Remaining
Contractual
Life
 
Weighted-
average
Exercise
Price
 
Aggregate
Intrinsic
Value
$23.69 - $28.48
802,260
 
2.1 years
 
$26.91
 
$
11,884

$29.30 - $32.03
262,185
 
1.1 years
 
$29.33
 
$
3,248

$32.85 - $43.83
1,101,635
 
4.3 years
 
$34.76
 
$
7,670

$23.69 - $43.83
2,166,080
 
3.1 years
 
$31.20
 
$
22,802

Company's Stock Options and SARs
The activity related to the Company’s stock options and SARs is as follows: 
 
Nonvested
 
Vested
 
Total
 
Weighted-
average
Exercise
Price
Outstanding, December 31, 2012
726,510

 
4,324,230

 
5,050,740

 
$
30.63

Vested
(726,510
)
 
726,510

 

 
 
Granted
852,157

 

 
852,157

 
$
32.03

Exercised

 
(2,326,215
)
 
(2,326,215
)
 
$
29.44

Forfeited/Expired
(13,550
)
 
(558,445
)
 
(571,995
)
 
$
33.10

Outstanding, December 31, 2013
838,607

 
2,166,080

 
3,004,687

 
$
31.43

Activity Related to PCSUs and Restricted Stock Units
The activity related to the PCSUs and restricted stock units is as follows:
 
Nonvested
 
Vested
 
Total
 
Average Grant
Date Fair
Value Per Share
Outstanding, December 31, 2012
492,114

 
1,178,903

 
1,671,017

 
$
27.83

Granted
445,098

 

 
445,098

 
$
28.90

Performance adjustments
(112,536
)
 
(4
)
 
(112,540
)
 
$
31.82

Vested
(37,368
)
 
37,368

 

 
 
Converted

 
(956,802
)
 
(956,802
)
 
$
25.87

Dividend equivalents
5,621

 
29,271

 
34,892

 
$
36.13

Outstanding, December 31, 2013
792,929

 
288,736

 
1,081,665

 
$
29.85