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Stock-Based Compensation (Summary Of PSU Transactions) (Details) - $ / shares
3 Months Ended 9 Months Ended
Sep. 30, 2024
Jun. 30, 2024
Mar. 31, 2024
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Sep. 30, 2024
Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Granted, Number of Share Units 577 23,142 160,694 133 17,054 222,782    
Performance Share Units [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Nonvested share units at beginning of period, Number of Share Units     531,437       531,437  
Granted, Number of Share Units             227,284  
Performance criteria adjustment, Number of Share Units             (155,959)  
Actual vested/Issued, Number of share Units             (96,425)  
Forfeited, Number of Share Units             (46,419)  
Nonvested share units at end of period, Number of Share Units 459,918           459,918  
Nonvested share units at beginning of period, Weighted Average Fair Value     $ 40.03       $ 40.03  
Granted, Weighted Average Fair Value             38.10 $ 45.06
Performance criteria adjustment, Weighted Average Fair Value             31.50  
Actual vested/Issued, Weighted Average Fair Value             43.40  
Forfeited, Weighted Average Fair Value             41.23  
Nonvested share units at end of period, Weighted Average Fair Value $ 41.14           $ 41.14