Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Operating Activities:
Net Income	$ 103.4	$ 74.5	$ 177.9
Adjustments to Reconcile Net Income to Net Cash Provided (Used) by Operating Activities:
Increase in Deferred Policy Acquisition Costs	(9.4)	(7.8)	(4.7)
Amortization of Insurance in Force Acquired	8.0	11.4	11.0
Equity in Net Loss of Former Investee before Taxes	0	0	0.2
Equity in Earnings of Equity Method Limited Liability Investments	(9.3)	(9.6)	(48.8)
Distribution of Accumulated Earnings of Equity Method Limited Liability Investments	15.4	0	0
Amortization of Investment Securities and Depreciation of Investment Real Estate	15.2	16.0	17.6
Net Realized Gains on Sales of Investments	65.4	34.1	42.6
Net Impairment Losses Recognized in Earnings	6.9	11.3	16.5
Gain on Sale of Portfolio of Automobile Loan Receivables	(12.9)	(4.5)	0
Benefit for Loan Losses	(2.0)	(42.0)	(14.2)
Depreciation of Property and Equipment	15.3	10.9	14.5
Write-off of Goodwill	0	0	14.8
Impairment of P&C Customer Relationships Acquired	0	13.5	0
Decrease (Increase) in Other Receivables	13.9	(0.2)	28.0
Decrease in Insurance Reserves	(1.1)	(52.1)	(52.1)
Decrease in Unearned Premiums	(15.2)	(12.4)	(46.4)
Change in Income Taxes	(14.9)	17.2	8.7
Decrease in Accrued Expenses and Other Liabilities	(15.6)	(47.5)	(41.0)
Other, Net	33.4	30.4	19.1
Net Cash Provided (Used) by Operating Activities	65.7	(25.0)	58.5
Investing Activities:
Sales and Maturities of Fixed Maturities	914.4	650.3	706.7
Purchases of Fixed Maturities	(872.6)	(663.4)	(532.1)
Sales of Equity Securities	70.8	248.3	33.8
Purchases of Equity Securities	(137.7)	(199.2)	(189.1)
Sales of Former Investee	0	0	2.7
Acquisition and Improvements of Investment Real Estate	(5.5)	(6.4)	(3.9)
Sales of Investment Real Estate	6.0	0.3	9.6
Return of Investment of Equity Method Limited Liability Investments	56.0	57.0	38.1
Acquisitions of Equity Method Limited Liability Investments	31.0	25.7	31.9
Decrease (Increase) in Short-term Investments	(80.0)	155.5	(7.3)
Receipts from Automobile Loan Receivables	2.0	166.5	339.6
Net Proceeds from Sale of Portfolio of Automobile Loan Receivables	16.7	220.7	0
Disposition of Business, Net of Cash Disposed	0	0	4.1
Increase in Other Investments	(12.4)	(15.6)	(14.7)
Other, Net	(32.9)	(23.7)	(36.3)
Net Cash Provided (Used) by Investing Activities	(106.2)	564.6	319.3
Financing Activities:
Repayments of Certificates of Deposits	0	(321.8)	(366.9)
Proceeds from Issuance of Notes Payable	0	95.0	387.8
Repayments of Notes Payable	0	(95.0)	(340.1)
Common Stock Repurchases	(60.7)	(27.4)	(34.4)
Cash Dividends Paid to Shareholders	(56.9)	(58.2)	(54.6)
Cash Exercise of Stock Options	1.3	0.2	0.5
Excess Tax Benefits from Share-based Awards	0.5	0.2	0.2
Other, Net	1.4	1.4	3.2
Net Cash Used by Financing Activities	(114.4)	(405.6)	(404.3)
Increase (Decrease) in Cash	(154.9)	134.0	(26.5)
Cash, Beginning of Year	251.2	117.2	143.7
Cash, End of Period	$ 96.3	$ 251.2	$ 117.2