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Stock-Based Compensation
3 Months Ended
Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
Stock-Based Compensation

The following table summarizes the Company's pre-tax compensation expense and related income tax benefit during the three months ended March 31, 2018 and 2017 related to the Company's performance units and restricted stock.
 
Three Months Ended March 31,
(In millions)
2018
2017
Performance units:
 
 
Total shareholder return
$
2.0

$
1.5

Earnings per share
0.7

0.6

Total performance units
2.7

2.1

Restricted stock


Total compensation expense
$
2.7

$
2.1

Income tax benefit
$
0.7

$
0.8



During the three months ended March 31, 2018, the Company issued 24,932 shares of new common stock pursuant to the Company's Stock Incentive Plan to satisfy restricted stock grants and payouts of earned performance units.

The following table summarizes the Company's stock-based compensation grants during the three months ended March 31, 2018.
 
Units/Shares
Fair Value
Per Share
Grants:
 
 
Performance units (Total shareholder return)
261,916

$
36.86

Performance units (Earnings per share)
87,308

$
31.03