Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Operating activities
Net income	$ 1,432.1	$ 1,685.3
Adjustments to reconcile net income to net cash provided by operating activities:
Net realized gains on investments	(107.5)	(71.0)
Other-than-temporary impairment losses recognized in income	21.7	46.9
Loss on extinguishment of debt	6.0	0
Gain on disposal from discontinued operations	(3.2)	0
Loss on disposal of assets	0.7	2.4
Deferred income taxes	48.7	14.4
Amortization, net of accretion	376.0	389.6
Depreciation expense	53.4	50.4
Impairment of property and equipment	2.2	0
Share-based compensation	88.9	63.1
Excess tax benefits from share-based compensation	(29.3)	(13.8)
Changes in operating assets and liabilities:
Receivables, net	(839.0)	(619.7)
Other invested assets	(23.6)	(9.0)
Other assets	(102.9)	27.7
Policy liabilities	853.2	(138.7)
Unearned income	130.5	(73.2)
Accounts payable and accrued expenses	213.0	(63.8)
Other liabilities	211.5	(15.4)
Income taxes	179.8	134.4
Other, net	(53.7)	(27.5)
Net cash provided by operating activities	2,458.5	1,382.1
Investing activities
Purchases of fixed maturity securities	(5,493.1)	(6,821.7)
Proceeds from fixed maturity securities:
Sales	4,024.8	4,462.8
Maturities, calls and redemptions	645.6	802.5
Purchases of equity securities	(359.3)	(70.0)
Proceeds from sales of equity securities	255.2	144.7
Purchases of other invested assets	(81.9)	(164.4)
Proceeds from sales of other invested assets	35.8	22.6
Settlement of non-hedging derivatives	(46.2)	(80.6)
Changes in securities lending collateral	(976.9)	(106.0)
Proceeds from sale of subsidiary, net of cash sold	740.0	0
Purchases of property and equipment	(271.2)	(249.5)
Other, net	(0.1)	(3.8)
Net cash used in investing activities	(1,527.3)	(2,063.4)
Financing activities
Net proceeds from commercial paper borrowings	487.9	351.0
Repayments of long-term borrowings	(45.1)	(556.9)
Proceeds from short-term borrowings	1,650.0	100.0
Repayments of short-term borrowings	(1,800.0)	0
Changes in securities lending payable	977.0	105.9
Changes in bank overdrafts	106.8	219.3
Repurchase and retirement of common stock	(2,077.2)	(615.5)
Cash dividends	(243.9)	(226.1)
Proceeds from issuance of common stock under employee stock plans	182.5	153.3
Excess tax benefits from share-based compensation	29.3	13.8
Net cash used in financing activities	(732.7)	(455.2)
Effect of foreign exchange rates on cash and cash equivalents	(0.8)	(0.8)
Change in cash and cash equivalents	197.7	(1,137.3)
Cash and cash equivalents, at beginning of period	1,586.9	2,484.6
Cash and cash equivalents, at end of period	1,784.6	1,347.3
Less cash and cash equivalents of discontinued operations at end of period	0	(4.7)
Cash and cash equivalents of continuing operations at end of period	$ 1,784.6	$ 1,342.6