Leases Operating Lease Maturity Table (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	$ 17.0	$ 22.3
Lessee, Operating Lease, Liability, Payments, Due Year Two	21.1	20.4
Lessee, Operating Lease, Liability, Payments, Due Year Three	16.3	15.9
Lessee, Operating Lease, Liability, Payments, Due Year Four	11.0	10.6
Lessee, Operating Lease, Liability, Payments, Due Year Five	1.7	1.4
Lessee, Operating Lease, Liability, Payments, Due after Year Five	2.5	2.4
Operating Leases, Undiscounted Interest	(8.8)	(10.2)
Lessee, Operating Lease, Liability, Payments, Due	60.8	62.8
Current operating lease lease liabilities	18.5	18.0
Operating lease liabilities	$ 42.3	$ 44.8