Income Taxes - Narrative (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes Paid	$ 42.4	$ 52.2	$ 57.1
Income Taxes Refunded, Net			4.1
Unrecognized Tax Benefits, Interest on Income Taxes Expense	(0.4)	0.4	0.4
Mutual Savings Life [Member]
Deferred Tax Liability Not Recognized, Cumulative Amount of Temporary Difference	14.7
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability	5.1
Fireside [Member] | State and Local Jurisdiction [Member]
Valuation Allowance, Deferred Tax Asset, Change in Amount	$ (6.6)