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Stock-Based Incentive Plans (Schedule of Restricted Stock Service-Based Rollforward) (Details) - Service-based restricted stock units - $ / shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Number of Shares      
Non-vested shares, beginning of year (in shares) 848,459    
Granted (in shares) 363,372    
Vested, shares (in shares) (279,064)    
Forfeited, shares (in shares) (141,610)    
Non-vested shares, end of year (in shares) 791,157 848,459  
Wtd. Avg. Grant Date Fair Value      
Balance beginning of year (in dollars per share) $ 58.00    
Granted (in dollars per share) 74.17 $ 44.28 $ 92.54
Vested (in dollars per share) 61.82    
Forfeited (in dollars per share) 55.85    
Balance end of year (in dollars per share) $ 64.53 $ 58.00