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Equity-Based Compensation (Schedule of Number of Awards and Weighted Average Grant Date Fair Value) (Details) - $ / shares
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Deferred Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Awards (in shares) 12,402    
Weighted Average Grant Date Fair Value (in USD per share) $ 45.98    
Common stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Awards (in shares) 4,134    
Weighted Average Grant Date Fair Value (in USD per share) $ 45.98    
Restricted stock units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Awards (in shares) 82,328    
Weighted Average Grant Date Fair Value (in USD per share) $ 56.81    
Performance stock units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Awards (in shares) 160,426    
Weighted Average Grant Date Fair Value (in USD per share) $ 55.98    
2019 | Deferred Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Awards (in shares) 12,402    
Weighted Average Grant Date Fair Value (in USD per share) $ 45.98    
2019 | Common stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Awards (in shares) 4,134    
Weighted Average Grant Date Fair Value (in USD per share) $ 45.98    
2019 | Restricted stock units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Awards (in shares) 81,397    
Weighted Average Grant Date Fair Value (in USD per share) $ 56.81    
2019 | Performance stock units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Awards (in shares) 160,426    
Weighted Average Grant Date Fair Value (in USD per share) $ 55.98    
2018 | Deferred Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Awards (in shares)   7,509  
Weighted Average Grant Date Fair Value (in USD per share)   $ 37.95  
2018 | Common stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Awards (in shares)   7,509  
Weighted Average Grant Date Fair Value (in USD per share)   $ 37.95  
2018 | Restricted stock units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Awards (in shares)   152,472  
Weighted Average Grant Date Fair Value (in USD per share)   $ 39.73  
2018 | Performance stock units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Awards (in shares)   183,908  
Weighted Average Grant Date Fair Value (in USD per share)   $ 40.49  
2017 | Deferred Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Awards (in shares)     10,255
Weighted Average Grant Date Fair Value (in USD per share)     $ 35.96
2017 | Common stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Awards (in shares)     2,113
Weighted Average Grant Date Fair Value (in USD per share)     $ 35.50
2017 | Restricted stock units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Awards (in shares)     116,174
Weighted Average Grant Date Fair Value (in USD per share)     $ 36.61
2017 | Performance stock units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of Awards (in shares)     135,929
Weighted Average Grant Date Fair Value (in USD per share)     $ 33.63