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Business Combinations, Goodwill and Intangible Assets - Schedule of Expected Amortization of Intangible Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]    
2021 $ 2.8  
2022 2.8  
2023 2.6  
2024 1.8  
2025 1.8  
Thereafter 14.9  
Intangible Assets, Net $ 26.7 $ 29.6