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Stock-Based Compensation - Summary of Performance Units (Details) - Performance Shares [Member] - $ / shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 194,053 191,854
Granted (in shares) 110,823  
Vested (in shares) (75,382)  
Forfeited (in shares) (33,242)  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value $ 93.86 $ 91.46
Granted (in dollars per share) 78.41  
Vested (in dollars per share) 72.30  
Forfeited (in dollars per share) $ 91.02