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Goodwill and Intangible Assets (Amortization Expense) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]    
Intangible asset amortization expense $ 603.3 $ 648.1
Intangible asset disposal & impairment charges 32.0 0.0
Total intangible asset amortization expense (including disposal & impairment charges) $ 635.3 $ 648.1