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 amount of income and (expense) line items presented in the statemenr of financial performance in which the effects of fair value and cash hedges are recorded	$ (362)
Net Investment Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total amount of income and (expense) line items presented in the statemenr of financial performance in which the effects of fair value and cash hedges are recorded	1,251
Commissions and other expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total amount of income and (expense) line items presented in the statemenr of financial performance in which the effects of fair value and cash hedges are recorded	1,176
Interest and Debt Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total amount of income and (expense) line items presented in the statemenr of financial performance in which the effects of fair value and cash hedges are recorded	71
Designated as Hedging Instrument [Member] \| Net Investment Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Hedged items	24
Derivatives designated as hedging instruments	(24)
Designated as Hedging Instrument [Member] \| Interest and Debt Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Hedged items	(34)
Derivatives designated as hedging instruments	34
Interest rate contracts [Member] \| Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] \| Realized Gain (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges Gain (Loss)	357
Interest rate contracts [Member] \| Cash Flow Hedges [Member] \| Designated as Hedging Instrument [Member] \| Net Investment Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from AOCI into income	1
Interest rate contracts [Member] \| Cash Flow Hedges [Member] \| Designated as Hedging Instrument [Member] \| Interest and Debt Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from AOCI into income	(1)
Foreign currency contracts [Member] \| Cash Flow Hedges [Member] \| Designated as Hedging Instrument [Member] \| Realized Gain (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from AOCI into income	1
Foreign currency contracts [Member] \| Cash Flow Hedges [Member] \| Designated as Hedging Instrument [Member] \| Net Investment Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from AOCI into income	7
Equity market contracts [Member] \| Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] \| Realized Gain (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges Gain (Loss)	(458)
Indexed Annuity And IUL Contracts [Member] \| Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] \| Realized Gain (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges Gain (Loss)	(239)
Embedded derivatives - GLB [Member] \| Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] \| Realized Gain (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges Gain (Loss)	286
Embedded derivatives - Reinsurance related [Member] \| Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member] \| Realized Gain (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-Qualifying Hedges Gain (Loss)	$ (174)

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

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

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