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Goodwill and Intangible Assets - Estimated Future Amortization (Details)
$ in Millions
Jun. 30, 2021
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2021 (excluding the six months ended June 30, 2021) $ 6.4
2022 12.1
2023 11.2
2024 10.5
2025 9.8
Thereafter 91.1
Total $ 141.1