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Income Taxes - Unrecognized Tax Benefits (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Income Tax Disclosure [Abstract]    
Uncertain tax benefits - January 1 $ 17.6 $ 22.9
Gross decreases - Tax positions in prior period 0.0 (5.3)
Uncertain tax benefits - December 31 $ 17.6 $ 17.6