Statutory Financial Information and Regulatory Matters (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Jun. 30, 2014 Restatement Adjustment Subsequent Event
Statutory Capital Surplus, Minimum Percent	10.00%
Statutory Capital Surplus, Maximum Percent	15.00%
Statutory Capital Surplus, Risk Based Capital, Percent	250.00%
Statutory capital and surplus	$ 222.9	$ 313.5	$ 312.8
Asset valuation reserve	12.3	7.5	7.3
Statutory capital, surplus and asset valuation reserve	235.2	321.0	320.1
Statutory gain (loss) from operations	(67.6)	61.9	56.4
Statutory net income (loss)	(86.1)	49.7	61.4
Prior period adjustments to surplus				$ 8.1