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Leases - Schedule of Future Minimum Payments on Operating Leases (Details)
$ in Millions
Jun. 30, 2019
USD ($)
Leases [Abstract]  
Remainder of 2019 $ 5.1
2020 5.5
2021 4.5
2022 4.1
2023 3.5
Thereafter 6.3
Total undiscounted lease payments 29.0
Less: present value adjustment 4.9
Operating lease liability $ 24.1