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Income Taxes - Other (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Current income tax expense        
Current income tax expense $ 20.0 $ 30.5 $ 39.5 $ 59.5
Deferred income tax expense 7.0 6.2 15.1 13.2
Income tax expense $ 27.0 $ 36.7 $ 54.6 $ 72.7