Leases - Aggregate lease maturities June 30, 2019 (Details) $ in Millions	Jun. 30, 2019 USD ($)
Finance Leases
Remaining six months of 2019	$ 4.5
2020	4.3
2021	3.3
2022	0.6
2023	0.1
Total Lease Payments	12.8
Less: Interest	(0.7)
Present value of lease liabilities	12.1
Operating Leases
Remaining six months of 2019	3.9
2020	6.8
2021	6.0
2022	5.1
2023	3.6
Thereafter	7.1
Total Lease Payments	32.5
Less: Interest	(5.3)
Present value of lease liabilities	27.2
Total Finance and Operating Leases
Remaining six months of 2019	8.4
2020	11.1
2021	9.3
2022	5.7
2023	3.7
Thereafter	7.1
Total Lease Payments	45.3
Less: Interest	(6.0)
Present value of lease liabilities	$ 39.3