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Income Taxes (Deferred Tax Assets And (Liabilities) Included In Consolidated Balance Sheets) (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Income Tax Disclosure [Abstract]    
Sundry $ 8.3 $ 8.6
Deferred income taxes (222.7) (217.4)
Net deferred tax liability $ (214.4) $ (208.8)