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LONG-TERM INCENTIVE EMPLOYEE COMPENSATION (Tables)
3 Months Ended
Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Long-Term Incentive Employee Compensation Costs
The following table provides the components of LTIP costs for the three months ended March 31, 2015 and 2014.
For the Three Months Ended March 31
2015
2014
Equity based awards
$
3.1

$
3.3

Liability-based awards
0.2

0.1

Total share-based compensation expense
$
3.3

$
3.4

Summary of Long-Term Incentive Plan Award Grants during year
During the three months ended March 31, 2015, we granted the following LTIP awards as provided in the table below:
 
# of Awards Granted
Grant Date Fair Value
Non-qualified stock options (NQOs)
0.2
 
$
11.23

Restricted stock units (RSUs)
0.2
 
$
41.52

Total shareholder return awards (TSR)
0.1
 
$
45.67

Return on invested capital awards (ROIC)
0.1
 
$
40.12

Weighted Average Grant Date Fair Value Assumptions for NQOs
The fair value of each NQO grant was estimated on the date of grant using a binomial lattice pricing model that incorporates multiple and variable assumptions over time, including assumptions such as employee exercise patterns, stock price volatility and changes in dividends. The following table details the weighted average assumptions used to measure fair value and the resulting grant date fair value for the first quarter 2015 NQO grants.
Dividend yield
1.1%
Expected volatility
29.4%
Expected life
5.8 years
Risk-free rates
1.7%
Grant date fair value
$11.23