Derivative Instruments (Outstanding Derivative Instruments With Off-Balance-Sheet Risks) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	$ 257,459	$ 199,195
Asset Fair Value	9,320	12,326
Liability Fair Value	8,219	11,306
Interest Rate Contracts [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	109,722
Foreign currency contracts [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	4,778
Equity market contracts [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	142,946
Commodity Contract [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	13
GLB Ceded Embedded Derivatives [Member] \| Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member]
Outstanding derivative instruments with off-balance-sheet risks
Asset Fair Value	29	56
Liability Fair Value	167	182
Cash Flow Hedges [Member] \| Designated as Hedging Instrument [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	6,973	7,201
Asset Fair Value	766	381
Liability Fair Value	250	487
Derivative Investments [Member] \| Interest Rate Contracts [Member] \| Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	105,977	82,786
Asset Fair Value	709	897
Liability Fair Value	935	176
Derivative Investments [Member] \| Foreign currency contracts [Member] \| Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	395	487
Asset Fair Value	27	7
Liability Fair Value	2	2
Derivative Investments [Member] \| Equity market contracts [Member] \| Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	142,946	107,515
Asset Fair Value	5,135	8,490
Liability Fair Value	2,035	3,909
Derivative Investments [Member] \| Commodity Contract [Member] \| Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	13
Asset Fair Value	14
Liability Fair Value	3
Derivative Investments [Member] \| Credit contracts [Member] \| Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts		49
Derivative Investments [Member] \| Cash Flow Hedges [Member] \| Interest Rate Contracts [Member] \| Designated as Hedging Instrument [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	2,590	3,222
Asset Fair Value	123	98
Liability Fair Value	232	436
Derivative Investments [Member] \| Cash Flow Hedges [Member] \| Foreign currency contracts [Member] \| Designated as Hedging Instrument [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	4,383	3,979
Asset Fair Value	643	283
Liability Fair Value	18	51
Derivative Investments [Member] \| Fair Value Hedges [Member] \| Interest Rate Contracts [Member] \| Designated as Hedging Instrument [Member]
Outstanding derivative instruments with off-balance-sheet risks
Notional Amounts	1,155	1,157
Asset Fair Value	2
Liability Fair Value	44	213
Other Assets [Member] \| GLB Direct Embedded Derivatives [Member] \| Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member]
Outstanding derivative instruments with off-balance-sheet risks
Asset Fair Value	1,697	1,967
Reinsurance Related Embedded Derivatives [Member] \| Reinsurance Related [Member] \| Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member]
Outstanding derivative instruments with off-balance-sheet risks
Asset Fair Value	416
Liability Fair Value		206
Future Contract Benefits [Member] \| Indexed Annuity And IUL Contracts [Member] \| Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member]
Outstanding derivative instruments with off-balance-sheet risks
Asset Fair Value	525	528
Liability Fair Value	$ 4,783	$ 6,131

Derivative Investments [Member] | Interest Rate Contracts [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member]

Derivative Investments [Member] | Foreign currency contracts [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member]

Derivative Investments [Member] | Equity market contracts [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member]

Derivative Investments [Member] | Commodity Contract [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member]

Derivative Investments [Member] | Credit contracts [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member]

Derivative Investments [Member] | Cash Flow Hedges [Member] | Interest Rate Contracts [Member] | Designated as Hedging Instrument [Member]

Derivative Investments [Member] | Cash Flow Hedges [Member] | Foreign currency contracts [Member] | Designated as Hedging Instrument [Member]

Derivative Investments [Member] | Fair Value Hedges [Member] | Interest Rate Contracts [Member] | Designated as Hedging Instrument [Member]

Other Assets [Member] | GLB Direct Embedded Derivatives [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member]

Reinsurance Related Embedded Derivatives [Member] | Reinsurance Related [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member]

Future Contract Benefits [Member] | Indexed Annuity And IUL Contracts [Member] | Derivative Instruments Not Designated and Not Qualifying as Hedging Instruments [Member]