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Valuation and Qualifying Accounts (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Movement in valuation allowances and reserves      
Balance at Beginning of Year $ 70.8    
Balance at End of Year 98.9 $ 70.8  
Allowance for deferred tax assets [Member]      
Movement in valuation allowances and reserves      
Balance at Beginning of Year 70.8 65.7 $ 53.3
Charged to Costs and Expenses 21.8 3.8 12.6
Charged to Other Accounts 9.7 14.4 3.7
Deductions (3.4) (13.1) (3.8)
Balance at End of Year $ 98.9 $ 70.8 $ 65.7