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Leases - Schedule of Future Minimum Payments on Operating Leases (Details) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Leases [Abstract]    
Remainder of 2019 $ 3.1  
2020 6.8  
2021 6.3  
2022 6.1  
2023 5.2  
Thereafter 14.1  
Total undiscounted lease payments 41.6  
Less: present value adjustment 7.4  
Operating lease liability $ 34.2 $ 22.8