Fair Value (Recurring Fair Value Measurements) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	$ 320,079	$ 340,274
Equity securities	988	1,269
Unit-linked and FVO Securities (2)	11,418	12,142
Short-term investments (3)	3,146	7,176
Residential mortgage loans — FVO	79,968	79,353
Derivative assets	10,148	10,466
Separate account assets	165,056	179,873
Liabilities [Abstract]
Derivative liabilities	4,631	3,852
Embedded derivatives within liability host contracts	615	649
Separate account liabilities	165,056	179,873
Residential mortgage loans - FVO
Assets [Abstract]
Residential mortgage loans — FVO	119	127
Recurring
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	320,079	340,274
Equity securities	988	1,269
Unit-linked and FVO Securities (2)	11,418	12,142
Short-term investments (3)	2,620	6,560
Other investments	1,115	959
Derivative assets	10,148	10,466
Embedded derivatives within asset host contracts	37	38
Separate account assets	165,056	179,873
Total assets (7)	511,580	551,708
Liabilities [Abstract]
Derivative liabilities	4,631	3,852
Embedded derivatives within liability host contracts	615	649
Total liabilities	5,288	4,526
Recurring \| Interest rate
Assets [Abstract]
Derivative assets	5,880	6,678
Liabilities [Abstract]
Derivative liabilities	1,289	281
Recurring \| Foreign currency exchange rate contracts
Assets [Abstract]
Derivative assets	3,054	2,554
Liabilities [Abstract]
Derivative liabilities	2,747	2,920
Recurring \| Credit
Assets [Abstract]
Derivative assets	196	190
Liabilities [Abstract]
Derivative liabilities	123	125
Recurring \| Equity market contracts
Assets [Abstract]
Derivative assets	1,018	1,044
Liabilities [Abstract]
Derivative liabilities	472	526
Recurring \| Derivative Liabilities Within Separate Accounts
Liabilities [Abstract]
Separate account liabilities	42	25
Recurring \| Residential mortgage loans - FVO
Assets [Abstract]
Residential mortgage loans — FVO	119	127
Recurring \| U.S. corporate
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	87,136	93,034
Recurring \| Foreign corporate
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	61,129	63,640
Recurring \| Foreign government
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	57,282	61,609
Recurring \| U.S. government and agency
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	40,334	46,599
Recurring \| RMBS
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	30,080	30,404
Recurring \| ABS & CLO
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	19,305	18,569
Recurring \| Municipals
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	12,958	14,212
Recurring \| CMBS
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	11,855	12,207
Recurring \| Level 1
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	21,000	25,489
Equity securities	641	931
Unit-linked and FVO Securities (2)	8,554	9,173
Short-term investments (3)	1,983	5,607
Other investments	0	0
Derivative assets	39	16
Embedded derivatives within asset host contracts	0	0
Separate account assets	69,777	76,312
Total assets (7)	101,994	117,528
Liabilities [Abstract]
Derivative liabilities	10	7
Embedded derivatives within liability host contracts	0	0
Total liabilities	16	14
Recurring \| Level 1 \| Interest rate
Assets [Abstract]
Derivative assets	0	4
Liabilities [Abstract]
Derivative liabilities	6	0
Recurring \| Level 1 \| Foreign currency exchange rate contracts
Assets [Abstract]
Derivative assets	7	0
Liabilities [Abstract]
Derivative liabilities	0	2
Recurring \| Level 1 \| Credit
Assets [Abstract]
Derivative assets	0	0
Liabilities [Abstract]
Derivative liabilities	0	0
Recurring \| Level 1 \| Equity market contracts
Assets [Abstract]
Derivative assets	32	12
Liabilities [Abstract]
Derivative liabilities	4	5
Recurring \| Level 1 \| Derivative Liabilities Within Separate Accounts
Liabilities [Abstract]
Separate account liabilities	6	7
Recurring \| Level 1 \| Residential mortgage loans - FVO
Assets [Abstract]
Residential mortgage loans — FVO	0	0
Recurring \| Level 1 \| U.S. corporate
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	0	0
Recurring \| Level 1 \| Foreign corporate
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	0	0
Recurring \| Level 1 \| Foreign government
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	0	0
Recurring \| Level 1 \| U.S. government and agency
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	20,894	25,482
Recurring \| Level 1 \| RMBS
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	106	7
Recurring \| Level 1 \| ABS & CLO
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	0	0
Recurring \| Level 1 \| Municipals
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	0	0
Recurring \| Level 1 \| CMBS
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	0	0
Recurring \| Level 2
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	268,510	283,388
Equity securities	158	187
Unit-linked and FVO Securities (2)	1,996	2,068
Short-term investments (3)	632	950
Other investments	68	61
Derivative assets	9,794	10,326
Embedded derivatives within asset host contracts	0	0
Separate account assets	93,150	101,424
Total assets (7)	374,308	398,404
Liabilities [Abstract]
Derivative liabilities	4,337	3,569
Embedded derivatives within liability host contracts	0	0
Total liabilities	4,362	3,581
Recurring \| Level 2 \| Interest rate
Assets [Abstract]
Derivative assets	5,665	6,577
Liabilities [Abstract]
Derivative liabilities	1,091	259
Recurring \| Level 2 \| Foreign currency exchange rate contracts
Assets [Abstract]
Derivative assets	2,977	2,551
Liabilities [Abstract]
Derivative liabilities	2,669	2,676
Recurring \| Level 2 \| Credit
Assets [Abstract]
Derivative assets	173	173
Liabilities [Abstract]
Derivative liabilities	109	113
Recurring \| Level 2 \| Equity market contracts
Assets [Abstract]
Derivative assets	979	1,025
Liabilities [Abstract]
Derivative liabilities	468	521
Recurring \| Level 2 \| Derivative Liabilities Within Separate Accounts
Liabilities [Abstract]
Separate account liabilities	25	12
Recurring \| Level 2 \| Residential mortgage loans - FVO
Assets [Abstract]
Residential mortgage loans — FVO	0	0
Recurring \| Level 2 \| U.S. corporate
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	75,901	81,266
Recurring \| Level 2 \| Foreign corporate
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	48,002	49,973
Recurring \| Level 2 \| Foreign government
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	57,034	61,518
Recurring \| Level 2 \| U.S. government and agency
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	19,440	21,117
Recurring \| Level 2 \| RMBS
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	26,813	27,270
Recurring \| Level 2 \| ABS & CLO
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	17,302	16,707
Recurring \| Level 2 \| Municipals
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	12,929	14,212
Recurring \| Level 2 \| CMBS
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	11,089	11,325
Recurring \| Level 3
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	30,569	31,397
Equity securities	189	151
Unit-linked and FVO Securities (2)	868	901
Short-term investments (3)	5	3
Other investments	1,047	898
Derivative assets	315	124
Embedded derivatives within asset host contracts	37	38
Separate account assets	2,129	2,137
Total assets (7)	35,278	35,776
Liabilities [Abstract]
Derivative liabilities	284	276
Embedded derivatives within liability host contracts	615	649
Total liabilities	910	931
Recurring \| Level 3 \| Interest rate
Assets [Abstract]
Derivative assets	215	97
Liabilities [Abstract]
Derivative liabilities	192	22
Recurring \| Level 3 \| Foreign currency exchange rate contracts
Assets [Abstract]
Derivative assets	70	3
Liabilities [Abstract]
Derivative liabilities	78	242
Recurring \| Level 3 \| Credit
Assets [Abstract]
Derivative assets	23	17
Liabilities [Abstract]
Derivative liabilities	14	12
Recurring \| Level 3 \| Equity market contracts
Assets [Abstract]
Derivative assets	7	7
Liabilities [Abstract]
Derivative liabilities	0	0
Recurring \| Level 3 \| Derivative Liabilities Within Separate Accounts
Liabilities [Abstract]
Separate account liabilities	11	6
Recurring \| Level 3 \| Residential mortgage loans - FVO
Assets [Abstract]
Residential mortgage loans — FVO	119	127
Recurring \| Level 3 \| U.S. corporate
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	11,235	11,768
Recurring \| Level 3 \| Foreign corporate
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	13,127	13,667
Recurring \| Level 3 \| Foreign government
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	248	91
Recurring \| Level 3 \| U.S. government and agency
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	0	0
Recurring \| Level 3 \| RMBS
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	3,161	3,127
Recurring \| Level 3 \| ABS & CLO
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	2,003	1,862
Recurring \| Level 3 \| Municipals
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	29	0
Recurring \| Level 3 \| CMBS
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	766	882
Other limited partnership interests \| Recurring
Assets [Abstract]
Investments, Fair Value Disclosure	$ 104	$ 99

Investments for which the FVO has been elected, or are otherwise required to be carried at estimated fair value.

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-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(2))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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