Derivative Instruments (Outstanding Derivative Instruments With Off-Balance-Sheet Risks) (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	$ 326,362
Interest Rate Contracts [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	86,380
Foreign Currency Contracts [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	4,905
Equity Market Contracts [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	234,998
Commodity [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	27
Credit Contracts [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	52
Total Derivative Instruments [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	326,362	$ 255,322
Asset Fair Value	11,442	7,952
Liability Fair Value	12,807	8,052
Derivative investments [Member] | Interest Rate Contracts [Member] | Non-Qualifying Hedges [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	85,019	105,977
Asset Fair Value	638	709
Liability Fair Value	925	935
Derivative investments [Member] | Foreign Currency Contracts [Member] | Non-Qualifying Hedges [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	357	395
Asset Fair Value	19	27
Liability Fair Value	2	2
Derivative investments [Member] | Equity Market Contracts [Member] | Non-Qualifying Hedges [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	234,998	142,653
Asset Fair Value	8,671	5,135
Liability Fair Value	4,152	2,035
Derivative investments [Member] | Commodity [Member] | Non-Qualifying Hedges [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	27	13
Asset Fair Value	14	14
Liability Fair Value	15	3
Derivative investments [Member] | Credit Contracts [Member] | Non-Qualifying Hedges [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	52
Derivative investments [Member] | Cash Flow Hedges [Member] | Qualifying Hedges [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	5,425	5,760
Asset Fair Value	603	647
Liability Fair Value	161	250
Derivative investments [Member] | Cash Flow Hedges [Member] | Interest Rate Contracts [Member] | Qualifying Hedges [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	877	1,377
Asset Fair Value	2	4
Liability Fair Value	125	232
Derivative investments [Member] | Cash Flow Hedges [Member] | Foreign Currency Contracts [Member] | Qualifying Hedges [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	4,548	4,383
Asset Fair Value	601	643
Liability Fair Value	36	18
Derivative investments [Member] | Fair Value Hedges [Member] | Interest Rate Contracts [Member] | Qualifying Hedges [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	484	524
Asset Fair Value	2	2
Liability Fair Value	42	44
Other Assets [Member] | LPR Ceded Derivative [Member] | Non-Qualifying Hedges [Member]
Outstanding derivative instruments with off-balance-sheet risks
Asset Fair Value	202	212
Reinsurance Related Embedded Derivatives [Member] | Reinsurance Related [Member] | Non-Qualifying Hedges [Member]
Outstanding derivative instruments with off-balance-sheet risks
Asset Fair Value	690	681
Future Contract Benefits [Member] | Indexed Annuity And IUL Contracts [Member] | Non-Qualifying Hedges [Member]
Outstanding derivative instruments with off-balance-sheet risks
Asset Fair Value	603	525
Liability Fair Value	$ 7,510	$ 4,783