Derivative Instruments and Hedging Activities (Notional Value and Change in Fair Value of Net Investment Hedges) (Details) - Cross currency swap contract - Designated as Hedging Instrument - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Derivative [Line Items]
Gain (Loss) Recognized in Accumulated Other Comprehensive Loss, Before-Tax Amount	$ 3.4	$ (5.7)	$ 8.1	$ (6.7)
Gain (Loss) Recognized in Accumulated Other Comprehensive Loss, Income Tax Expense (Benefit)	0.8	(1.5)	2.0	(1.7)
Gain (Loss) Recognized in Accumulated Other Comprehensive Loss, After-Tax Amount	2.6	$ (4.2)	6.1	$ (5.0)
Net Investment Hedging
Derivative [Line Items]
Notional amount	$ 300.0		$ 300.0		$ 300.0