Leases Maturities of Operating Lease Liabilities (Details) $ in Millions	Jun. 30, 2020 USD ($)
Maturities of Operating Lease Liabilities [Abstract]
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	$ 3.8
Lessee, Operating Lease, Liability, Payments, Due Year Two	10.9
Lessee, Operating Lease, Liability, Payments, Due Year Three	11.1
Lessee, Operating Lease, Liability, Payments, Due Year Four	9.5
Lessee, Operating Lease, Liability, Payments, Due Year Five	7.7
Lessee, Operating Lease, Liability, Payments, Due after Year Five	67.3
Lessee, Operating Lease, Liability, Payments, Due	110.3
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	$ 22.9