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Goodwill and Identifiable Assets Future Amortization Expense (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]    
2022 $ 54.4  
2023 44.5  
2024 35.2  
2025 28.7  
2026 25.1  
Thereafter 57.4  
Net Carrying Amount $ 245.3 $ 227.3