Lease Arrangements (Classification on the Balance Sheet) (Details) $ in Millions	Dec. 31, 2019 USD ($)
Assets
Operating lease assets	$ 64.3
Finance lease assets	27.1
Total lease assets	91.4
Current
Operating	11.9
Finance	7.0
Noncurrent
Operating	53.6
Finance	10.2
Total lease liabilities	$ 82.7
Weighted-average remaining lease term (in years)
Operating leases	7 years 1 month 1 day
Finance leases	3 years 11 months 1 day
Weighted-average discount rate
Operating leases	5.40%
Finance leases	3.70%