Leases, Maturity of Lease liability (Details) $ in Millions	Sep. 30, 2019 USD ($)
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
Remainder of 2019	$ 1.3
2020	5.2
2021	4.4
2022	3.6
2023	3.4
2024	3.3
2025 and thereafter	18.9
Total minimum lease payments	40.1
Less: interest	(10.6)
Present value	29.5
Finance Lease, Liability, Payment, Due, Rolling Maturity [Abstract]
Remainder of 2019	0.4
2020	1.6
2021	1.4
2022	1.2
2023	1.1
2024	0.7
2025 and thereafter	1.4
Total minimum lease payments	7.8
Less: interest	(1.0)
Present value	$ 6.8