Lease Arrangements (Maturities of Lease Liabilities) (Details) $ in Millions	Dec. 31, 2019 USD ($)
Operating Leases
2020	$ 14.9
2021	12.5
2022	10.7
2023	9.1
2024	8.4
Thereafter	23.2
Total lease payments	78.8
Less: amount of lease payments representing interest	(13.3)
Total present value of future lease payments	65.5
Finance Leases
2020	7.4
2021	4.3
2022	3.1
2023	2.0
2024	0.9
Thereafter	0.9
Total lease payments	18.6
Less: amount of lease payments representing interest	(1.4)
Total present value of future lease payments	$ 17.2