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Equity-Based Compensation (Fair Value of Performance Share Awards Granted) (Details) - Performance stock awards [Member]
6 Months Ended
Jun. 30, 2021
$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock price as of valuation date $ 53.53
Risk-free rate 0.18%
Expected volatility 45.56%
Expected term (years) 3 years