Derivative Instruments (Effects Of Qualifying And Non-Qualifying Hedges) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 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	$ 89	$ (526)	$ (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	5,844	5,264	4,962
Benefits Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total line items in which the effects of fair value or cash flow hedges are recorded	8,039	8,050	7,585
Interest Rate Contracts [Member] \| Realized Gain (Loss) [Member] \| Non-Qualifying Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-qualifying hedges gain (loss)	(957)	1,287	982
Foreign Currency Contracts [Member] \| Realized Gain (Loss) [Member] \| Non-Qualifying Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-qualifying hedges gain (loss)	(1)	(3)	(1)
Equity Market Contracts [Member] \| Realized Gain (Loss) [Member] \| Non-Qualifying Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-qualifying hedges gain (loss)	3,355	971	(137)
Credit Contracts [Member] \| Realized Gain (Loss) [Member] \| Non-Qualifying Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-qualifying hedges gain (loss)	(1)	(6)
GLB Embedded Derivative [Member] \| Realized Gain (Loss) [Member] \| Non-Qualifying Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-qualifying hedges gain (loss)	3	1	1
Reinsurance Related [Member] \| Realized Gain (Loss) [Member] \| Non-Qualifying Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-qualifying hedges gain (loss)	280	(241)	(626)
Indexed Annuity And IUL Contracts [Member] \| Realized Gain (Loss) [Member] \| Non-Qualifying Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Non-qualifying hedges gain (loss)	(2,622)	(471)	(742)
Fair Value Hedges [Member] \| Interest Rate Contracts [Member] \| Net Investment Income [Member] \| Qualifying Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Hedged items	(60)	69	63
Derivatives designated as hedging instruments	60	(69)	(63)
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	3	2	3
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	(2)	6	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	$ 48	$ 56	$ 35

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.

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

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