Leases Lessee, Schedule of Finance Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Lessee, Lease, Description [Line Items]
Acquisition Costs, Period Cost	$ 11.3	$ 1.2	$ 2.4
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation	(0.1)	(2.5)
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Other Property, Plant, and Equipment, Net	8.9	16.8
Railcars [Member]
Lessee, Lease, Description [Line Items]
Capital Leased Assets, Gross	9.0	$ 19.3
Assets Held under Capital Leases [Member]
Lessee, Lease, Description [Line Items]
Acquisition Costs, Period Cost	$ 10.5