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Equity-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Grant Date Fair Value for Awards of Performance Units Inputs

The grant date fair value for awards of performance units with market-based metrics, which were granted in the nine months ended September 30, 2017, was based on a fair value as determined using a Monte Carlo simulation valuation methodology using the following key inputs:

Valuation date stock price based on the March 22, 2017 closing stock price	$36.31
Expected volatility	36.00	%
Risk-free interest rate	1.46	%
Term in years	2.78

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Schedule Of Share Based Payment Award, Equity Instruments Other Than Options, Valuation Assumptions [Table Text Block]

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