Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Operating Activities
Net income	$ 249	$ 273
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Net realized capital losses (gains)	(80)	231
Additional Cash Flow Elements and Supplemental Cash Flow Information [Abstract]
Amortization of deferred policy acquisition costs	416	437
Additions to deferred policy acquisition costs	(449)	(447)
Depreciation and amortization	174	134
Other operating activities, net	15	79
Increase in reinsurance recoverables	(66)	(75)
Net change in accrued and deferred income taxes	70	53
Increase in insurance liabilities	996	235
Net change in other assets and other liabilities	(566)	(622)
Net cash provided by operating activities	759	298
Proceeds from the sale/maturity/prepayment of:
Fixed maturities, available-for-sale	5,536	3,906
Equity securities, at fair value	157	645
Mortgage loans	307	329
Partnerships	56	34
Payments for the purchase of:
Fixed maturities, available-for-sale	(5,049)	(3,578)
Equity securities, at fair value	(756)	(518)
Mortgage loans	(400)	(487)
Partnerships	(245)	(97)
Payments for (Proceeds from) Derivative Instrument, Investing Activities	(27)	(161)
Net additions of property and equipment	(23)	(23)
Net proceeds from (payments for) short-term investments	(54)	407
Other investing activities, net	(6)	(2)
Net cash provided by (used for) investing activities	(450)	777
Financing Activities
Deposits and other additions to investment and universal life-type contracts	22	15
Withdrawals and other deductions from investment and universal life-type contracts	(44)	(10)
Net decrease in securities loaned or sold under agreements to repurchase	0	(237)
Repayment of debt	0	(500)
Net return of shares under incentive and stock compensation plans	0	(32)
Treasury stock acquired	(123)	(150)
Dividends paid on preferred stock	(5)	(5)
Dividends paid on common stock	(116)	(108)
Net cash used for financing activities	(266)	(1,027)
Effect of Exchange Rate on Cash and Cash Equivalents	(3)	(9)
Cash and Cash Equivalents, Including Cash Held-for-sale, Period Increase (Decrease)	40	39
Cash and Cash Equivalents, Held-for-sale, Period Increase (Decrease)	(1)	0
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	41	39
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	239	262
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	280	301
Supplemental Disclosure of Cash Flow Information
Income tax received (paid)	32	(1)
Interest paid	$ 58	$ 74

Cash and Cash Equivalents, Held-for-sale, Period Increase (Decrease)

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Cash and Cash Equivalents, Including Cash Held-for-sale, Period Increase (Decrease)

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

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Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of amortization expense (reversal of expense) for deferred policy acquisition costs and present value of future profits from insurance contract acquired in business combination.

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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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Amount of increase (decrease) from the effect of exchange rate changes on cash and cash equivalent balances held in foreign currencies.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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The increase (decrease) during the reporting period in the account that represents the temporary difference that results from Income or Loss that is recognized for accounting purposes but not for tax purposes and vice versa.

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