v3.26.1
Property (Carrying Value Of Property) (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Property, Plant and Equipment [Line Items]    
Total Property, at cost $ 1,163.8 $ 1,108.9
Accumulated depreciation and amortization (654.0) (628.5)
Net Property 509.8 480.4
Land [Member]    
Property, Plant and Equipment [Line Items]    
Total Property, at cost 96.3 96.8
Building [Member]    
Property, Plant and Equipment [Line Items]    
Total Property, at cost 622.2 595.9
Furniture and Fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Total Property, at cost 388.0 359.9
Software [Member]    
Property, Plant and Equipment [Line Items]    
Total Property, at cost 52.0 50.9
Finance Leases [Member]    
Property, Plant and Equipment [Line Items]    
Total Property, at cost $ 5.3 $ 5.4