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Income Taxes - Components of Income Tax Provision (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Current tax expense:      
Federal $ 23.6 $ 154.1 $ 63.1
State and local 13.2 25.6 17.2
Foreign 81.8 88.7 106.6
Total current expense 118.6 268.4 186.9
Deferred tax (benefit) expense:      
Federal (28.1) (23.4) 9.6
State and local (5.8) 2.3 6.9
Foreign 5.7 (9.3) 21.6
Total deferred tax (benefit) expense (28.2) (30.4) 38.1
Total income tax provision $ 90.4 $ 238.0 $ 225.0