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Description Of Business And Summary Of Significant Accounting Policies (Narrative) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Description Of Business And Summary Of Significant Accounting Policies [Line Items]    
Capitalized Computer Software, Additions $ 7.2 $ 10.6
Derivative, Notional Amount 215.7  
Derivative, Gain (Loss) on Derivative, Net 9.8  
Gain (Loss), Foreign Currency Transaction, before Tax $ 14.7  
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Nonoperating Gains (Losses)  
Building Improvements [Member]    
Description Of Business And Summary Of Significant Accounting Policies [Line Items]    
Estimated useful life of property and equipment (years) 10 years  
Maximum [Member]    
Description Of Business And Summary Of Significant Accounting Policies [Line Items]    
RegistrationTerm ten  
Maximum [Member] | Buildings [Member]    
Description Of Business And Summary Of Significant Accounting Policies [Line Items]    
Estimated useful life of property and equipment (years) 47 years  
Maximum [Member] | Computer Equipment, Purchased Software, Office Equipment, And Furniture And Fixtures [Member]    
Description Of Business And Summary Of Significant Accounting Policies [Line Items]    
Estimated useful life of property and equipment (years) 5 years  
Minimum [Member]    
Description Of Business And Summary Of Significant Accounting Policies [Line Items]    
RegistrationTerm one  
Minimum [Member] | Buildings [Member]    
Description Of Business And Summary Of Significant Accounting Policies [Line Items]    
Estimated useful life of property and equipment (years) 35 years  
Minimum [Member] | Computer Equipment, Purchased Software, Office Equipment, And Furniture And Fixtures [Member]    
Description Of Business And Summary Of Significant Accounting Policies [Line Items]    
Estimated useful life of property and equipment (years) 3 years