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Equity-Based Compensation (Narrative) (Details) - $ / shares
9 Months Ended
May 06, 2019
Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares of common stock issued   300,000
Performance stock awards [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Performance share award granted under stock incentive plan, performance period   3 years
Fair value of shares granted   $ 37.87
Restricted stock units [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Fair value of shares granted   $ 36.64
Minimum [Member] | Performance stock awards [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of Shares Actually Issued, as a Percent of the Amount Subject to the Performance Share Award   0.00%
Minimum [Member] | Restricted stock units [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting Period   1 year
Maximum [Member] | Performance stock awards [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of Shares Actually Issued, as a Percent of the Amount Subject to the Performance Share Award   200.00%
Maximum [Member] | Restricted stock units [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Vesting Period   3 years
2019 Long-Term Incentive Plan [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of additional shares authorized 1,200,000  
Long-Term Incentive Plans [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares available for future use   1,400,000