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Schedule II - Valuation and Qualifying Accounts and Reserves (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Reserve for doubtful accounts      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance, Beginning of Year $ 52.6 $ 87.4 $ 82.9
Charged to Costs and Expenses 21.1 4.7 21.2
Charged to Other Comprehensive Income 0.0 0.0 0.0
Net recoveries, write-offs and other (8.6) (39.5) (16.7)
Balance, End of Year 65.1 52.6 87.4
Deferred tax valuation allowance      
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance, Beginning of Year 335.6 303.3 261.4
Charged to Costs and Expenses 61.4 34.0 42.2
Charged to Other Comprehensive Income 1.7 (1.7) (0.3)
Net recoveries, write-offs and other 0.0 0.0 0.0
Balance, End of Year $ 398.7 $ 335.6 $ 303.3