Lease Obligations (Schedule of Future MinimumLease Payments) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2020	$ 36.6
2021	25.2
2022	18.4
2023	14.5
2024	8.6
2025 and thereafter	12.9
Total minimum payments	116.2
Less: present value discount	(15.6)
Present value of minimum payments	100.6
Less: current portion	(30.2)	$ 0.0
Long-term lease liability	70.4	0.0
Finance Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2020	8.2
2021	4.1
2022	1.8
2023	0.2
2024	0.0
2025 and thereafter	0.0
Total minimum payments	14.3
Less: present value discount	(0.6)
Present value of minimum payments	13.7
Less: current portion	(7.7)	$ (5.0)
Long-term lease liability	$ 6.0