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Goodwill and Intangible Assets, net - Narrative (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]    
Amortization expense $ 36.3 $ 34.6
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]    
Remainder of 2019 35.2  
2020 70.7  
2021 69.0  
2022 63.6  
2023 58.9  
2024 $ 53.9