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Goodwill and Intangible Assets (Narrative) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Finite-Lived Intangible Assets [Line Items]    
Amortization expense $ 48.5 $ 38.8
Estimated future amortization for the remainder of fiscal year 136.1  
Estimated future amortization expense in year one 134.7  
Estimated future amortization expense in year two 106.2  
Estimated future amortization expense in year three 77.7  
Estimated future amortization expense in year four 65.3  
Estimated future amortization expense thereafter $ 137.8  
Minimum    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible asset, useful life 1 year  
Maximum    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible asset, useful life 20 years