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Derivative Instruments and Hedging Activities (Notional Value and Change in Fair Value of Net Investment Hedges) (Details) - Designated as Hedging Instrument
€ in Millions, $ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2023
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2023
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2023
EUR (€)
Dec. 31, 2022
USD ($)
Cross currency swap contract            
Derivative [Line Items]            
Gain (Loss) Recognized in Accumulated Other Comprehensive Loss, Before-Tax Amount $ 4.1 $ 13.7 $ (2.6) $ 34.5    
Gain (Loss) Recognized in Accumulated Other Comprehensive Loss, Income Tax (1.0) (3.5) 0.7 (8.9)    
Gain (Loss) Recognized in Accumulated Other Comprehensive Loss, After-Tax Amount 3.1 10.2 (1.9) 25.6    
Cross currency swap contract | Net Investment Hedging            
Derivative [Line Items]            
Notional amount 300.0   300.0     $ 300.0
Foreign currency denominated debt            
Derivative [Line Items]            
Gain (Loss) Recognized in Accumulated Other Comprehensive Loss, Before-Tax Amount 2.4 0.0 3.7 0.0    
Gain (Loss) Recognized in Accumulated Other Comprehensive Loss, Income Tax (0.7) 0.0 (1.0) 0.0    
Gain (Loss) Recognized in Accumulated Other Comprehensive Loss, After-Tax Amount 1.7 $ 0.0 2.7 $ 0.0    
Foreign currency denominated debt | Net Investment Hedging            
Derivative [Line Items]            
Notional amount $ 158.7   $ 158.7   € 150.0 $ 0.0