Long-Term Debt Leases (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Long-term Debt, Weighted Average Interest Rate	6.50%	6.40%	6.30%
Sale Leaseback Transaction, Net Proceeds, Investing Activities	$ 0.0	$ 0.0	$ 24.1
Operating leases, future minimum payments due, current	20.4
Operating leases, future minimum payments, due in two years	17.0
Operating leases, future minimum payments, due in three years	9.1
Operating leases, future minimum payments, due in four years	4.4
Operating leases, future minimum payments, due in five years	4.4
Operating lease expense	25.3	23.6	$ 17.6
Capital Lease Obligations [Member]
Capital leased assets, gross	7.9	6.7
Capital leases, balance sheet, assets by major class, net	$ 5.6	$ 5.0
Long-term Debt, Weighted Average Interest Rate	7.20%