Derivative Instruments (Effects Of Qualifying And Non-Qualifying Hedges) (Details) $ in Millions	3 Months Ended
Mar. 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	$ (351)
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	1,191
Commissions And Other Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total line items in which the effects of fair value or cash flow hedges are recorded	1,124
Interest rate contracts [Member] \| Realized Gain (Loss) [Member] \| Non-Qualifying Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-qualifying hedges gain (loss)	357
Equity market contracts [Member] \| Realized Gain (Loss) [Member] \| Non-Qualifying Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-qualifying hedges gain (loss)	(458)
GLB Direct And Ceded 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)	(289)
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)	(239)
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	1
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	1
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	7
Fair Value Hedges [Member] \| Interest rate contracts [Member] \| Net Investment Income [Member] \| Qualifying Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Hedged items	24
Derivatives designated as hedging instruments	$ (24)

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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+ 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.

+ References

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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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