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Valuation And Qualifying Accounts And Reserves (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Allowance for doubtful receivables      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period $ 37.0 $ 42.0 $ 26.8
Additions (Credited) to Cost and Expenses 3.2 (3.4) 17.1
Deductions 1.2 1.6 1.9
Balance at End of Period 39.0 37.0 42.0
Tax valuation allowance      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Period 16.2 18.1 16.8
Additions (Credited) to Cost and Expenses (0.4) (0.1) 2.5
Deductions 0.1 1.8 1.2
Balance at End of Period $ 15.7 $ 16.2 $ 18.1