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Realized Gain (Loss) (Schedule Of Realized Gain (Loss)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Realized gain (loss) related to certain investments
AFS securities. Gross gains	$ 31	$ 45	$ 38
AFS securities. Gross losses	(84)	(73)	(80)
Credit loss benefit (expense)	(26)
AFS securities. Gross OTTI		(16)	(7)
Realized gain (loss) on equity securities	8	(6)	(17)
Credit loss benefit (expense) on mortgage loans on real estate	(117)	(1)	2
Other gain (loss) on investments	(7)	(9)	2
Associated amortization of DAC, VOBA, DSI and DFEL and changes in other contract holder funds	31	(13)	(22)
Total realized gain (loss) related to certain financial assets	(164)	(73)	(84)
Realized gain (loss) on the mark-to-market on certain instruments	26	(127)	4
Indexed annuity and IUL contracts net derivatives results:
Gross gain (loss)	37	(80)	(51)
Associated amortization of DAC, VOBA, DSI, and DFEL	(25)	2	12
Variable annuity net derivatives results:
Gross gain (loss)	(367)	(389)	295
Associated amortization of DAC, VOBA, DSI, and DFEL	(20)	57	(35)
Total realized gain (loss)	(513)	(610)	$ 141
Mortgage Loans On Real Estate [Member]
Realized gain (loss) related to certain investments
Realized gain (loss) on the mark-to-market on certain instruments	(24)
Equity Securities [Member]
Realized gain (loss) related to certain investments
Realized gain (loss) on equity securities	$ 8	$ (4)

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- Definition

Represents the amortization of deferred acquisition costs, value of business acquired, deferred sales inducements and deferred front-end loads and changes in other contract holder funds and funds withheld reinsurance liabilities associated with realized gains and losses related to certain investments.

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Amortization income (expense) of deferred acquisition costs, value of business acquired, deferred sales inducements and deferred front-end loads associated with gross gains (losses) on indexed annuity and universal life net derivative results.

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Represents the net difference between the change in the fair value of the S&P 500 call options that we hold and the change in the fair value of the embedded derivative liabilities of our indexed annuity and universal life products along with changes in the fair value of embedded derivative liabilities related to index call options we may purchase in the future to hedge contract holder index allocations applicable to future reset periods for our indexed annuity products.

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Indexed annuity and universal life net derivative results

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Other investments, net realized gain (loss)

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Represents changes in the fair values of certain derivative instruments (including those associated with consolidated variable interest entities), total return swaps (embedded derivatives that are theoretically included in various assets and liabilities assoicated with these arrangements) and trading securities.

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This item represents the net realized gain (loss) included in earnings for the period related to certain investments.

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Variable annuity net derivatives results:

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Amortization income (expense) of deferred acquisition costs, value of business acquired, deferred sales inducements and deferred front-end loads associated with gross gains (losses) on variable annuity net derivatives results.

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Includes the net difference in the change in embedded derivative reserves of guaranteed living benefit products and the change in the fair value of the derivative instruments that hedge guaranteed death benefit and guaranteed living benefit products, including the cost of purchasing the hedging instruments.

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This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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Amount of realized gain (loss) on investment in debt and equity securities.

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Amount of realized gain (loss) from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of other-than-temporary impairment (OTTI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), recognized in earnings.

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Amount of credit loss expense (reversal of expense) for financing receivable.

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Amount of expense (reversal of expense) for expected credit loss on reinsurance recoverable.

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