Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Operating Activities:
Net Income	$ 49.1	$ 162.5
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Increase in Deferred Policy Acquisition Costs	(3.8)	(5.1)
Amortization of Life Insurance in Force Acquired and Customer Relationships Acquired	5.4	6.3
Equity in Earnings of Equity Method Limited Liability Investments	(9.7)	(19.9)
Distribution of Accumulated Earnings of Equity Method Limited Liability Investments	14.4	15.1
Appreciation on Fair Value Option Investments	(0.6)	0
Amortization of Investment Securities and Depreciation of Investment Real Estate	11.3	12.4
Net Realized Gains on Sales of Investments	(18.1)	(78.3)
Net Impairment Losses Recognized in Earnings	8.7	6.3
Depreciation of Property and Equipment	13.0	12.7
Write-off of Long-lived Asset	54.6	0
Decrease in Receivables	21.0	13.5
Decrease in Insurance Reserves	(20.1)	(47.3)
Decrease in Unearned Premiums	(30.7)	(15.6)
Change in Income Taxes	(12.9)	34.3
Increase (Decrease) in Accrued Expenses and Other Liabilities	0.1	(36.2)
Other, Net	17.7	32.2
Net Cash Provided by Operating Activities	99.4	92.9
Investing Activities:
Sales, Paydowns and Maturities of Fixed Maturities	454.1	578.5
Purchases of Fixed Maturities	(404.3)	(667.4)
Sales of Equity Securities	84.4	107.3
Purchases of Equity Securities	(95.1)	(136.0)
Sales of and Return of Investment of Equity Method Limited Liability Investments	37.4	26.5
Acquisitions of Equity Method Limited Liability Investments	(19.8)	(8.3)
Sales of Fair Value Option Investments	2.9	0
Purchases of Fair Value Option Investments	(52.9)	0
Decrease (Increase) in Short-term Investments	(34.1)	39.7
Improvements of Investment Real Estate	(1.9)	(4.9)
Sales of Investment Real Estate	0.9	102.5
Increase in Other Investments	(5.4)	(6.5)
Purchase of Corporate-owned Life Insurance	(33.5)	0
Acquisition of Software	(8.5)	(12.5)
Disposition of Business, Net of Cash Disposed	8.9	3.8
Other, Net	(5.4)	(8.5)
Net Cash Provided (Used) by Investing Activities	(72.3)	14.2
Financing Activities:
Net Proceeds from Issuance of Subordinated Debentures	144.2	0
Repayments of Debt	0	5.5
Common Stock Repurchases	(106.5)	(82.9)
Dividends and Dividend Equivalents Paid	(39.2)	(41.5)
Cash Exercise of Stock Options	0	0.6
Other, Net	1.0	2.0
Net Cash Used by Financing Activities	(0.5)	(127.3)
Increase (Decrease) in Cash	26.6	(20.2)
Cash, Beginning of Year	66.5	96.3
Cash, End of Period	$ 93.1	$ 76.1