Derivative Instruments (Outstanding Derivative Instruments With Off-Balance-Sheet Risks) (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	$ 305,139
Interest Rate Contracts [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	84,865
Foreign Currency Contracts [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	4,763
Equity Market Contracts [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	215,376
Commodity [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	13
Credit Contracts [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	122
Total Derivative Instruments [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	305,139	$ 255,322
Asset Fair Value	8,783	7,952
Liability Fair Value	9,622	8,052
Derivative investments [Member] | Interest Rate Contracts [Member] | Non-Qualifying Hedges [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	83,299	105,977
Asset Fair Value	607	709
Liability Fair Value	764	935
Derivative investments [Member] | Foreign Currency Contracts [Member] | Non-Qualifying Hedges [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	363	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	215,376	142,653
Asset Fair Value	6,372	5,135
Liability Fair Value	2,837	2,035
Derivative investments [Member] | Commodity [Member] | Non-Qualifying Hedges [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	13	13
Asset Fair Value	23	14
Liability Fair Value		3
Derivative investments [Member] | Credit Contracts [Member] | Non-Qualifying Hedges [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	122
Derivative investments [Member] | Cash Flow Hedges [Member] | Qualifying Hedges [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	5,482	5,760
Asset Fair Value	643	647
Liability Fair Value	162	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	1,082	1,377
Asset Fair Value	6	4
Liability Fair Value	143	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	4,400	4,383
Asset Fair Value	637	643
Liability Fair Value	19	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	1	2
Liability Fair Value	61	44
Other Assets [Member] | LPR Ceded Derivative [Member] | Non-Qualifying Hedges [Member]
Outstanding derivative instruments with off-balance-sheet risks
Asset Fair Value	199	212
Reinsurance Related Embedded Derivatives [Member] | Reinsurance Related [Member] | Non-Qualifying Hedges [Member]
Outstanding derivative instruments with off-balance-sheet risks
Asset Fair Value	614	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	305	525
Liability Fair Value	$ 5,796	$ 4,783