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EMPLOYEE STOCK BENEFIT PLANS
 9 Months Ended
Sep. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
EMPLOYEE STOCK BENEFIT PLANS
EMPLOYEE STOCK BENEFIT PLANS
 
The following table summarizes stock-based compensation expense related to stock options, performance share awards and restricted stock units.
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
(Dollars in millions)
 
2016
 
2015
 
2016
 
2015
Stock options
 
$
3.1

 
$
1.8

 
$
8.5

 
$
5.7

Performance share awards
 
1.7

 
(1.1
)
 
6.3

 
4.4

Restricted stock units
 
4.3

 
3.4

 
12.1

 
9.5

Total pre-tax stock-based compensation expense
 
$
9.1

 
$
4.1

 
$
26.9

 
$
19.6

Net tax benefit related to stock-based compensation expense
 
$
(3.1
)
 
$
(1.3
)
 
$
(9.1
)
 
$
(6.5
)

 
During the nine months ended September 30, 2016, the Company granted the following awards: 
(Shares in millions)
 
Options/Shares Granted
 
Weighted-
Average Grant
Date Fair Value
Stock options
 
1.1

 
$
13.88

Performance share awards
 
0.2

 
$
70.49

Restricted stock units
 
0.4

 
$
74.50


 
As of September 30, 2016, the Company had the following award expense yet to be recognized: 
(Dollars in millions)
 
Unrecognized
Compensation
Expense
 
Expected
Weighted-Average
Period to be
Recognized
(years)
Stock options
 
$
13.2

 
1.8
Performance share awards
 
5.1

 
1.3
Restricted stock units
 
36.8

 
2.5
Total
 
$
55.1