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Leases - Schedule of Future Minimum Payments on Operating Leases (Details)
$ in Millions
Sep. 30, 2019
USD ($)
Leases [Abstract]  
Remainder of 2019 $ 1.7
2020 5.7
2021 4.7
2022 4.2
2023 3.6
Thereafter 6.3
Total undiscounted lease payments 26.2
Less: present value adjustment 2.9
Operating lease liability $ 23.3