Derivative Instruments (Effects Of Qualifying And Non-Qualifying Hedges) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2019
Realized Gain (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total line items in which the effects of fair value or cash flow hedges are recorded	$ (216)	$ (844)
Net Investment Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total line items in which the effects of fair value or cash flow hedges are recorded	1,167	3,645
Interest rate contracts [Member] \| Realized Gain (Loss) [Member] \| Non-Qualifying Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-qualifying hedges gain (loss)	698	1,624
Equity market contracts [Member] \| Realized Gain (Loss) [Member] \| Non-Qualifying Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-qualifying hedges gain (loss)	172	(241)
GLB Embedded Derivative [Member] \| Realized Gain (Loss) [Member] \| Non-Qualifying Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-qualifying hedges gain (loss)	(1)	(1)
Embedded derivatives - Reinsurance related [Member] \| Realized Gain (Loss) [Member] \| Non-Qualifying Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-qualifying hedges gain (loss)	(156)	(716)
Indexed Annuity And IUL Contracts [Member] \| Realized Gain (Loss) [Member] \| Non-Qualifying Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-qualifying hedges gain (loss)	(23)	(372)
Fair Value Hedges [Member] \| Interest rate contracts [Member] \| Net Investment Income [Member] \| Qualifying Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Hedged items	44	101
Derivatives designated as hedging instruments	(44)	(101)
Cash Flow Hedges [Member] \| Interest rate contracts [Member] \| Net Investment Income [Member] \| Qualifying Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from AOCI into income		2
Cash Flow Hedges [Member] \| Foreign currency contracts [Member] \| Realized Gain (Loss) [Member] \| Qualifying Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from AOCI into income	5	9
Cash Flow Hedges [Member] \| Foreign currency contracts [Member] \| Net Investment Income [Member] \| Qualifying Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from AOCI into income	$ 10	$ 25

Amount of income (expense) line items in statement of financial position that hedges are recorded

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- Definition

Amount of gain (loss) from the increase (decrease) in fair value of derivative and nonderivative instruments designated as fair value hedging instruments recognized in the income statement.

+ References

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Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement.

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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- Definition

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

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