Lease Arrangements (Maturities of Lease Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Operating Leases
2021	$ 16.1
2022	14.5
2023	12.8
2024	10.5
2025	8.0
Thereafter	20.6
Total lease payments	82.5
Less: amount of lease payments representing interest	(12.9)
Total present value of future lease payments	69.6
Finance Leases
2021	7.7
2022	4.8
2023	4.0
2024	2.1
2025	0.9
Thereafter	0.9
Total lease payments	20.4
Less: amount of lease payments representing interest	(1.7)
Total present value of future lease payments	$ 18.7	$ 17.2