XML 48 R35.htm IDEA: XBRL DOCUMENT v3.10.0.1
Equity-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of Restricted Stock and RSU to be Settled in Common Stock Activity A summary of the activity for RSUs to be settled in common stock for the year ended December 31, 2018 is as follows (shares in thousands):
 
Shares
 
Weighted Average
Grant Date Fair Value
(Per share)
Unvested at December 31, 2017
2,600

 
$30.42
Granted
1,625

 
$34.37
Vested
(1,370
)
 
$28.88
Forfeited
(221
)
 
$32.27
Unvested at December 31, 2018
2,634

 
$33.50
Grant Date Fair Value for Awards of Performance Units Inputs The grant date fair values for awards of performance units with market-based metrics, which were granted in the years ended December 31, 2018 and 2017, were determined using a Monte Carlo simulation valuation methodology using the following key inputs:
 
 
2018
 
2017
Valuation date stock price based on the February 28, 2018 and March 22, 2017 closing stock prices
 
$34.44
 
$36.31
Expected volatility
 
34
%
 
36
%
Risk-free interest rate
 
2.39
%
 
1.46
%
Term in years
 
2.84

 
2.78