CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities
Net income	$ 677us-gaap_NetIncomeLoss	$ 600us-gaap_NetIncomeLoss
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and other non-cash items	87	98
Realized capital gains and losses	(139)us-gaap_RealizedInvestmentGainsLosses	(54)us-gaap_RealizedInvestmentGainsLosses
Loss on disposition of operations	1	59
Interest credited to contractholder funds	199	307
Changes in:
Policy benefits and other insurance reserves	115	(18)
Unearned premiums	(117)	(92)
Deferred policy acquisition costs	(35)	3
Premium installment receivables, net	(66)	(46)
Reinsurance recoverables, net	(24)	(45)
Income taxes	59	(68)
Other operating assets and liabilities	(191)	(270)
Net cash provided by operating activities	566	474
Proceeds from sales
Fixed income securities	9,453	6,483
Equity securities	1,152	1,328
Limited partnership interests	296	238
Mortgage loans	0	10
Other investments	47	30
Investment collections
Fixed income securities	1,213	849
Mortgage loans	114	324
Other investments	60	50
Investment purchases
Fixed income securities	(9,210)	(6,252)
Equity securities	(1,172)	(1,330)
Limited partnership interests	(365)	(277)
Mortgage loans	(202)all_PaymentsToPurchaseMortgageLoans	(2)all_PaymentsToPurchaseMortgageLoans
Other investments	(193)	(243)
Change in short-term investments, net	(63)	189
Change in other investments, net	2	36
Purchases of property and equipment, net	(59)	(55)
Disposition (acquisition) of operations	0	(2)
Net cash provided by investing activities	1,073	1,376
Cash flows from financing activities
Repayments of long-term debt	0us-gaap_RepaymentsOfLongTermDebt	(1)us-gaap_RepaymentsOfLongTermDebt
Proceeds from issuance of preferred stock	0	725
Contractholder fund deposits	261us-gaap_AdditionsToContractHoldersFunds	403us-gaap_AdditionsToContractHoldersFunds
Contractholder fund withdrawals	(572)	(1,084)
Dividends paid on common stock	(118)us-gaap_PaymentsOfDividendsCommonStock	(113)us-gaap_PaymentsOfDividendsCommonStock
Dividends paid on preferred stock	(29)	(12)
Treasury stock purchases	(1,010)	(1,115)
Shares reissued under equity incentive plans, net	64	77
Excess tax benefits on share-based payment arrangements	26	13
Other	(2)	(6)
Net cash used in financing activities	(1,380)	(1,113)
Cash classified as held for sale	0all_TransferOfCashToHeldForSale	(242)all_TransferOfCashToHeldForSale
Net increase in cash	259us-gaap_CashPeriodIncreaseDecrease	495us-gaap_CashPeriodIncreaseDecrease
Cash at beginning of period	657us-gaap_Cash	675us-gaap_Cash
Cash at end of period	$ 916us-gaap_Cash	$ 1,170us-gaap_Cash

The cash outflow used to purchase loans that are secured with real estate mortgage.

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The cash inflow from collections of repayments from borrowers on loans that are secured with real estate mortgages.

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Represents the aggregate amount of cash transferred to held for sale during the period

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The cash inflow from a segregated fund account during the period.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of increase (decrease) in cash. Cash is the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Includes effect from exchange rate changes.

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The aggregate net amount of depreciation, amortization, and accretion recognized during an accounting period. As a noncash item, the net amount is added back to net income when calculating cash provided by or used in operations using the indirect method.

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The gain (loss) resulting from the sale of a disposal group that is not a discontinued operation. It is included in income from continuing operations before income taxes in the income statement.

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Amount of cash inflow from realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.

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The increase (decrease) during the reporting period in the balance sheet value of capitalized sales costs that are associated with acquiring a new insurance customers.

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The increase (decrease) during the reporting period in the amounts payable to taxing authorities for taxes that are based on the reporting entity's earnings, net of amounts receivable from taxing authorities for refunds of overpayments or recoveries of income taxes.

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The increase (decrease) in insurance liability balances during the period.

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The increase (decrease) during the reporting period in other assets used in operating activities less other operating liabilities used in operating activities not separately disclosed in the statement of cash flows. May include changes in other current assets and liabilities, other noncurrent assets and liabilities, or a combination of other current and noncurrent assets and liabilities.

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The change in the premium receivable balance on the balance sheet.

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The increase (decrease) during the reporting period in the amount of benefits the ceding insurer expects to recover on insurance policies ceded to other insurance entities as of the balance sheet date for all guaranteed benefit types.

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Amount of increase (decrease) unearned premiums written. Excludes portion of unearned premiums amortized into income.

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Interest allocated to policyholders holding contracts under which the insurer must provide a guaranteed yield.

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Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The net cash outflow or inflow associated with the acquisition or sale of a business segment during the period.

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The net cash outflow or inflow from other investing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.

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The cash outflow to acquire debt securities classified as available-for-sale securities, because they are not classified as either held-to-maturity securities or trading securities.

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The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity).

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The cash inflow associated with maturities (principal being due), prepayments and calls (requests of early payments) on securities not classified as either held-to-maturity securities or trading securities which are classified as available-for-sale securities.

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The net cash inflow or outflow from other financing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.

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The cash inflow associated with the sale of other investments not otherwise defined in the taxonomy.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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The cash outflow for a segregated fund account during the period.

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