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Intangible Assets and Goodwill (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Intangible assets—other, net $ 3,532.0 $ 4,865.3  
Amortization of purchased intangibles $ 237.6 $ 311.2 $ 314.7