Leases - Schedule of Future Minimum Operating Lease Payments (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Leases [Abstract]
2019	$ 2.9
2020	5.2
2021	4.5
2022	3.5
2023	3.0
Thereafter	11.2
Total future minimum lease payments	30.3
Less: Imputed interest	3.8
Present value of lease liabilities	26.5
Accrued expense (current maturities of leases)	4.5
Other liabilities (non-current maturities of leases)	$ 22.0
2019		$ 5.0
2020		4.5
2021		3.8
2022		3.1
2023		3.0
Thereafter		11.2
Total future minimum lease payments		$ 30.6