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Goodwill and Intangible Assets - Intangible Asset Amortization (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]    
Amortization expense $ 15.3 $ 15.6
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]    
2019 62.0  
2020 62.0  
2021 62.0  
2022 62.0  
2023 60.0  
After 2023 $ 60.0