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Goodwill And Other Intangible Assets (Finite Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Goodwill And Intangible Assets [Abstract]    
2024 $ 20.5  
2025 20.2  
2026 18.7  
2027 18.5  
2028 18.0  
After 2028 166.0  
Total Net Carrying Amount $ 261.9 $ 90.6