Leases (Lease Information) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($) Rate
Leases [Abstract]
Finance Lease, Interest Payment on Liability	$ 3.0
Operating Lease, Payments	3.7
Finance Lease, Principal Payments	2.4
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	6.6
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 0.1
Finance Lease, Weighted Average Remaining Lease Term	15 years 9 months 18 days
Operating Lease, Weighted Average Remaining Lease Term	10 years 1 month 6 days
Finance Lease, Weighted Average Discount Rate, Percent | Rate	5.80%
Operating Lease, Weighted Average Discount Rate, Percent | Rate	4.40%