Income Taxes (Reconciliation Between Federal Statutory Tax Rate and Effective Tax Rates) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012		Dec. 31, 2011
Rate reconciliation
Tax at statutory rate	$ 21.1	$ 19.3		$ 9.9
Effect of state income taxes, net	1.1	0.9		0.1
Effect of foreign operations	(0.2)	(0.1)		2.9
Valuation allowance	(1.6)	(0.2)		(16.8)
Non-deductible items	0.7	0.6		0.4
Manufacturer's deduction	(1.4)	(0.6)		0
Other, net	(0.3)	0.4		(0.3)
Income tax expense (benefit)	$ 19.4	$ 20.3	[1]	$ (3.8)	[1]

[1] Adjusted to reflect the discontinued operations.