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Goodwill and Intangible Assets - Goodwill (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Goodwill [Roll Forward]    
Balance as of beginning of year $ 43.8 $ 43.8
Acquisition of OTB 68.1 0.0
Foreign currency translation adjustment (0.7) 0.0
Balance as of end of year $ 111.2 $ 43.8