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Share-Based Compensation and Capital Stock (Tables)
 6 Months Ended
Jun. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Weighted Average Assumptions Of Black-Scholes Option-Pricing Model
The fair value of the options granted was estimated on the grant date using the Black-Scholes option-pricing model with the following weighted average assumptions:
        
 
2014 Grants
 
2013 Grants
Risk-free interest rate
1.56
%
 
0.73
%
Expected volatility
25.01
%
 
38.14
%
Expected life of stock option
4.5 years

 
4.5 years

Dividend yield
1.62
%
 
2.01
%
Requisite service period
4 years

 
4 years

Contractual life
7 years

 
7 years

Weighted average fair value of options granted
$
8.82

 
$
9.89
Summary Of Activity Related To Restricted Stock Grants
The following table is a summary of activity related to restricted stock grants: 
 
Three Months Ended
 
Six Months Ended
 
June 30
 
June 30
 
2014
 
2013
 
2014
 
2013
Restricted share grants
17,262

 
20,858

 
147,055

 
215,399

Weighted average grant date fair value per share
$44.62
 
$45.32
 
$46.46
 
$37.59
Aggregate grant date fair value ($000)
$770
 
$945
 
$6,833
 
8,097

Restricted shares forfeited
2,964

 
6,429

 
4,296

 
27,928

Vesting service period of shares granted
12 - 36 months
 
12 - 48 months
 
12 - 48 months
 
12 - 48 months
Grant date fair value of shares vested ($000)
$
935

 
$
660

 
$
8,203

 
$
7,659
Summary Of Activity Related To PVRSU Grants
The following table is a summary of activity related to PVRSU grants:
 
Three Months Ended
 
Six Months Ended
 
June 30
 
June 30
 
2014
 
2013
 
2014

2013
Performance vested restricted stock units granted at target
—

 
—

 
24,678


58,902

Weighted average grant date fair value per share
$
—

 
$
—

 
$
45.59


$
36.76

Aggregate grant date fair value ($000)
$
—

 
$
—

 
$
1,125


$
2,165

Stock units forfeited
—

 
—

 
—


—

Requisite service period
—

 
—

 
36 months


22-36 months
Summary Of Change In Stock-Based Award Activity
A summary of stock-based award activity as of June 30, 2014 and changes during the six months ended are presented below:
 
Stock Options
 
Restricted Stock
 
Performance Vested
Restricted Stock Units
 
Options
 
Weighted
Average
Exercise
Price
 
Weighted
Average
Remaining
Contractual
Term
 
Shares
 
Weighted
Average
Grant Date
Fair Value
 
Shares
 
Weighted
Average
Grant Date
Fair Value
Outstanding at January 1, 2014
1,661,952

 
$
26.44

 
 
 
563,345

 
$
36.64

 
216,342

 
$
37.34

Granted
651,757

 
$
45.59

 
 
 
147,055

 
$
46.46

 
24,678

 
$
45.59

Performance based leveraging (1)
—

 
$
—

 
 
 
—

 
$
—

 
10,251

 
$
41.25

Exercised/Vested
(58,749
)
 
$
26.33

 
 
 
(172,997
)
 
$
37.04

 
(28,886
)
 
$
41.25

Expired
—

 
$
—

 
 
 
—

 
$
—

 
—

 
$
—

Forfeited
—

 
$
—

 
 
 
(4,296
)
 
$
39.18

 
—

 
$
—

Outstanding at June 30, 2014
2,254,960

 
$
31.98

 
3.7
 
533,107

 
$
39.20

 
222,385

 
$
37.93

Options exercisable at June 30, 2014
1,326,714

 
$
25.24

 
2.1
 
 
 
 
 
 
 
 

_________________________________ 
(1)PVRSU units outstanding have been increased by 10,251 units due to the Company exceeding the targeted performance conditions contained in PVRSUs granted in prior periods during the six months ended June 30, 2014.
Pre-Tax Stock-Based Compensation Expenses And Associated Income Tax Benefits
The components of the Company’s pretax share-based compensation expense and associated income tax benefits are as follows for the three and six months ended June 30, 2014 and 2013:
 
Three Months Ended
 
Six Months Ended
 
June 30
 
June 30
(in millions)
2014
 
2013
 
2014
 
2013
Stock options
$
0.7

 
$
0.5

 
$
1.1

 
$
1.0

Restricted stock
1.9

 
1.8

 
3.8

 
3.6

Performance vested restricted stock units
(0.8
)
 
0.6

 
(0.1
)
 
1.2

Total
$
1.8

 
$
2.9

 
$
4.8

 
$
5.8

Income tax benefits
$
0.7

 
$
1.1

 
$
1.8

 
$
2.1