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Goodwill and Intangible Assets - Estimated Annual Amortization Expense (Details)
$ in Millions
Sep. 30, 2020
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2020 (excluding the nine months ended September 30, 2020) $ 1.6
2021 6.4
2022 6.5
2023 6.4
2024 6.4
Thereafter 31.7
Total $ 59.0