Condensed Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenues:
Earned Premiums	$ 512.8	$ 529.8	$ 1,022.7	$ 1,059.0
Net Investment Income	74.6	75.2	155.4	152.6
Other Income	0.2	0.2	0.4	0.4
Net Realized Gains on Sales of Investments	2.3	4.1	29.2	9.0
Other-than-temporary Impairment Losses:
Total Other-than-temporary Impairment Losses	(2.3)	(0.4)	(4.7)	(0.9)
Portion of Losses Recognized in Other Comprehensive Income	1.3	0	1.8	0
Net Impairment Losses Recognized in Earnings	(1.0)	(0.4)	(2.9)	(0.9)
Total Revenues	588.9	608.9	1,204.8	1,220.1
Expenses:
Policyholders' Benefits and Incurred Losses and Loss Adjustment Expenses	354.2	423.8	703.4	800.4
Insurance Expenses	163.1	167.7	321.4	330.1
Interest and Other Expenses	25.2	20.9	49.0	42.7
Total Expenses	542.5	612.4	1,073.8	1,173.2
Income (Loss) from Continuing Operations before Income Taxes	46.4	(3.5)	131.0	46.9
Income Tax Benefit (Expense)	(13.9)	5.1	(39.9)	(9.0)
Income from Continuing Operations	32.5	1.6	91.1	37.9
Income from Discontinued Operations	1.5	0.7	1.3	8.0
Net Income	$ 34.0	$ 2.3	$ 92.4	$ 45.9
Income from Continuing Operations Per Unrestricted Share:
Basic (in dollars per share)	$ 0.56	$ 0.03	$ 1.57	$ 0.63
Diluted (in dollars per share)	$ 0.56	$ 0.03	$ 1.57	$ 0.63
Net Income Per Unrestricted Share:
Basic (in dollars per share)	$ 0.59	$ 0.04	$ 1.59	$ 0.77
Diluted (in dollars per share)	$ 0.59	$ 0.04	$ 1.59	$ 0.77
Dividends Paid to Shareholders Per Share (in dollars per share)	$ 0.24	$ 0.24	$ 0.48	$ 0.48