Lease Obligations (Schedule of Future MinimumLease Payments) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Future Maturities of Operating Leases
2022	$ 34.4
2023	29.5
2024	21.9
2025	17.8
2026	14.5
2027 and thereafter	30.1
Total minimum payments	148.2
Less: present value discount	(20.3)
Present value of minimum payments	127.9
Less: current portion	(28.1)	$ (28.4)
Long-term lease liability	99.8	54.5
Future Maturities of Finance Leases
2022	1.9
2023	0.8
2024	0.4
2025	0.3
2026	0.0
2027 and thereafter	0.0
Total minimum payments	3.4
Less: present value discount	(0.2)
Present value of minimum payments	3.2
Less: current portion	(1.8)	(2.8)
Long-term lease liability	$ 1.4	$ 2.0