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Intangible Assets And Goodwill (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization of purchased intangibles $ 55.7 $ 57.2 $ 166.4 $ 171.0