Derivative Instruments (Effects Of Qualifying And Non-Qualifying Hedges) (Details) $ in Millions	12 Months Ended
Dec. 31, 2019 USD ($)
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	$ (828)
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	4,962
Net Investment Income [Member] \| Qualifying Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Hedged items	63
Derivatives designated as hedging instruments	(63)
Interest rate contracts [Member] \| Realized Gain (Loss) [Member] \| Non-Qualifying Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-qualifying hedges gain (loss)	982
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	3
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	9
Foreign currency contracts [Member] \| Realized Gain (Loss) [Member] \| Non-Qualifying Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-qualifying hedges gain (loss)	(1)
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	35
Equity market contracts [Member] \| Realized Gain (Loss) [Member] \| Non-Qualifying Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-qualifying hedges gain (loss)	(137)
GLB Embedded Derivative [Member] \| Realized Gain (Loss) [Member] \| Non-Qualifying Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-qualifying hedges gain (loss)	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)	(626)
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)	$ (742)

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

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