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Intangible Assets And Goodwill (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization of purchased intangibles $ 57.0 $ 57.1 $ 113.8 $ 115.5