Properties and Equipment - Min. Future Payments Leases Table (Details) $ in Millions	Dec. 31, 2019 USD ($)
Property, Plant and Equipment [Abstract]
2020	$ 11.1
Lessee, Operating Lease, Liability, Payments, Due Year Two	8.0
Lessee, Operating Lease, Liability, Payments, Due Year Three	5.6
Lessee, Operating Lease, Liability, Payments, Due Year Four	3.2
Lessee, Operating Lease, Liability, Payments, Due Year Five	2.5
Lessee, Operating Lease, Liability, Payments, Due after Year Five	16.7
Total	47.1
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	11.6
Operating Lease, Liability	$ 35.5