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Schedule II - Valuation and Qualifying Accounts and Reserves (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Reserve for doubtful accounts      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance, Beginning of Year $ 78.4 $ 65.1 $ 52.6
Charged to Costs and Expenses 6.3 (0.5) 21.1
Charged to Other Comprehensive Income 0.0 0.0 0.0
Net recoveries, write-offs and other (28.5) 13.8 (8.6)
Balance, End of Year 56.2 78.4 65.1
Deferred tax valuation allowance      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance, Beginning of Year 457.6 398.7 335.6
Charged to Costs and Expenses 130.5 61.5 61.4
Charged to Other Comprehensive Income 0.3 (2.6) 1.7
Net recoveries, write-offs and other 0.0 0.0 0.0
Balance, End of Year $ 588.4 $ 457.6 $ 398.7