CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash Flows from Operating Activities
Net Income	$ 471.4	$ 431.2
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities
Change in Receivables	115.7	(95.0)
Change in Deferred Acquisition Costs	(28.8)	(6.4)
Change in Insurance Reserves and Liabilities	212.3	364.5
Change in Income Taxes	157.0	(64.9)
Change in Other Accrued Liabilities	(35.5)	(6.0)
Non-cash Adjustments to Net Investment Income	(183.6)	(194.8)
Net Realized Investment Gain	(32.2)	(23.6)
Depreciation	42.9	42.7
Other, Net	6.6	0.6
Net Cash Provided by Operating Activities	725.8	448.3
Cash Flows from Investing Activities
Proceeds from Sales of Fixed Maturity Securities	288.7	288.8
Proceeds from Maturities of Fixed Maturity Securities	1,011.4	972.7
Proceeds from Sales and Maturities of Other Investments	116.1	112.7
Purchase of Fixed Maturity Securities	(1,658.3)	(1,584.9)
Purchase of Other Investments	(134.9)	(149.4)
Net Sales (Purchases) of Short-term Investments	(126.6)	589.4
Other, Net	(58.4)	(54.5)
Net Cash Provided (Used) by Investing Activities	(562.0)	174.8
Cash Flows from Financing Activities
Net Short-term Debt Repayments	(19.1)	(302.2)
Issuance of Long-term Debt	347.2	0
Long-term Debt Repayments	(175.0)	(86.2)
Cost Related to Early Retirement of Debt	(13.2)	0
Issuance of Common Stock	3.0	3.3
Repurchase of Common Stock	(202.7)	(197.4)
Dividends Paid to Stockholders	(75.7)	(70.4)
Other, Net	(10.4)	0.3
Net Cash Used by Financing Activities	(145.9)	(652.6)
Net Increase (Decrease) in Cash and Bank Deposits	17.9	(29.5)
Cash and Bank Deposits at Beginning of Year	94.1	77.3
Cash and Bank Deposits at End of Period	$ 112.0	$ 47.8