Fair Value (Recurring Fair Value Measurements) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	$ 276,780	$ 340,274
Equity securities	1,684	1,269
Unit-linked and FVO Securities (1)	9,668	12,142
Short-term investments (2)	4,935	7,176
Residential mortgage loans — FVO	83,763	79,353
Derivative assets	11,411	10,466
Separate account assets	146,038	179,873
Liabilities [Abstract]
Derivative liabilities	6,975	3,852
Embedded derivatives within liability host contracts (4)	578	649
Separate account liabilities	146,038	179,873
Residential mortgage loans - FVO
Assets [Abstract]
Residential mortgage loans — FVO	0	127
Recurring
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	276,780	340,274
Equity securities	1,684	1,269
Unit-linked and FVO Securities (1)	9,668	12,142
Short-term investments (2)	4,573	6,560
Other investments	1,132	959
Derivative assets	11,411	10,466
Embedded derivatives within asset host contracts	29	38
Separate account assets	146,038	179,873
Total assets (6)	451,315	551,708
Liabilities [Abstract]
Derivative liabilities	6,975	3,852
Embedded derivatives within liability host contracts (4)	578	649
Total liabilities	7,594	4,526
Recurring \| Interest rate contracts
Assets [Abstract]
Derivative assets	4,572	6,678
Liabilities [Abstract]
Derivative liabilities	3,558	281
Recurring \| Foreign currency exchange rate contracts
Assets [Abstract]
Derivative assets	5,888	2,554
Liabilities [Abstract]
Derivative liabilities	2,870	2,920
Recurring \| Credit contracts
Assets [Abstract]
Derivative assets	151	190
Liabilities [Abstract]
Derivative liabilities	107	125
Recurring \| Equity market contracts
Assets [Abstract]
Derivative assets	800	1,044
Liabilities [Abstract]
Derivative liabilities	440	526
Recurring \| Derivative Liabilities Within Separate Accounts
Liabilities [Abstract]
Separate account liabilities	41	25
Recurring \| Residential mortgage loans - FVO
Assets [Abstract]
Residential mortgage loans — FVO	0	127
Recurring \| U.S. corporate
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	80,030	93,034
Recurring \| Foreign government
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	46,747	61,609
Recurring \| Foreign corporate
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	52,572	63,640
Recurring \| U.S. government and agency
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	32,229	46,599
Recurring \| RMBS
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	26,165	30,404
Recurring \| ABS & CLO
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	16,822	18,569
Recurring \| Municipals
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	12,152	14,212
Recurring \| CMBS
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	10,063	12,207
Recurring \| Level 1
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	15,959	25,489
Equity securities	1,293	931
Unit-linked and FVO Securities (1)	7,101	9,173
Short-term investments (2)	3,830	5,607
Other investments	0	0
Derivative assets	18	16
Embedded derivatives within asset host contracts	0	0
Separate account assets	65,107	76,312
Total assets (6)	93,308	117,528
Liabilities [Abstract]
Derivative liabilities	5	7
Embedded derivatives within liability host contracts (4)	0	0
Total liabilities	13	14
Recurring \| Level 1 \| Interest rate contracts
Assets [Abstract]
Derivative assets	2	4
Liabilities [Abstract]
Derivative liabilities	1	0
Recurring \| Level 1 \| Foreign currency exchange rate contracts
Assets [Abstract]
Derivative assets	8	0
Liabilities [Abstract]
Derivative liabilities	0	2
Recurring \| Level 1 \| Credit contracts
Assets [Abstract]
Derivative assets	0	0
Liabilities [Abstract]
Derivative liabilities	0	0
Recurring \| Level 1 \| Equity market contracts
Assets [Abstract]
Derivative assets	8	12
Liabilities [Abstract]
Derivative liabilities	4	5
Recurring \| Level 1 \| Derivative Liabilities Within Separate Accounts
Liabilities [Abstract]
Separate account liabilities	8	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 government
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 \| U.S. government and agency
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	15,955	25,482
Recurring \| Level 1 \| RMBS
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	4	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	232,048	283,388
Equity securities	132	187
Unit-linked and FVO Securities (1)	1,780	2,068
Short-term investments (2)	686	950
Other investments	206	61
Derivative assets	11,094	10,326
Embedded derivatives within asset host contracts	0	0
Separate account assets	79,703	101,424
Total assets (6)	325,649	398,404
Liabilities [Abstract]
Derivative liabilities	6,501	3,569
Embedded derivatives within liability host contracts (4)	0	0
Total liabilities	6,516	3,581
Recurring \| Level 2 \| Interest rate contracts
Assets [Abstract]
Derivative assets	4,570	6,577
Liabilities [Abstract]
Derivative liabilities	3,153	259
Recurring \| Level 2 \| Foreign currency exchange rate contracts
Assets [Abstract]
Derivative assets	5,670	2,551
Liabilities [Abstract]
Derivative liabilities	2,820	2,676
Recurring \| Level 2 \| Credit contracts
Assets [Abstract]
Derivative assets	69	173
Liabilities [Abstract]
Derivative liabilities	92	113
Recurring \| Level 2 \| Equity market contracts
Assets [Abstract]
Derivative assets	785	1,025
Liabilities [Abstract]
Derivative liabilities	436	521
Recurring \| Level 2 \| Derivative Liabilities Within Separate Accounts
Liabilities [Abstract]
Separate account liabilities	15	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	67,578	81,266
Recurring \| Level 2 \| Foreign government
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	46,644	61,518
Recurring \| Level 2 \| Foreign corporate
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	40,623	49,973
Recurring \| Level 2 \| U.S. government and agency
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	16,274	21,117
Recurring \| Level 2 \| RMBS
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	24,515	27,270
Recurring \| Level 2 \| ABS & CLO
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	14,895	16,707
Recurring \| Level 2 \| Municipals
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	12,152	14,212
Recurring \| Level 2 \| CMBS
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	9,367	11,325
Recurring \| Level 3
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	28,773	31,397
Equity securities	259	151
Unit-linked and FVO Securities (1)	787	901
Short-term investments (2)	57	3
Other investments	926	898
Derivative assets	299	124
Embedded derivatives within asset host contracts	29	38
Separate account assets	1,228	2,137
Total assets (6)	32,358	35,776
Liabilities [Abstract]
Derivative liabilities	469	276
Embedded derivatives within liability host contracts (4)	578	649
Total liabilities	1,065	931
Recurring \| Level 3 \| Interest rate contracts
Assets [Abstract]
Derivative assets	0	97
Liabilities [Abstract]
Derivative liabilities	404	22
Recurring \| Level 3 \| Foreign currency exchange rate contracts
Assets [Abstract]
Derivative assets	210	3
Liabilities [Abstract]
Derivative liabilities	50	242
Recurring \| Level 3 \| Credit contracts
Assets [Abstract]
Derivative assets	82	17
Liabilities [Abstract]
Derivative liabilities	15	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	18	6
Recurring \| Level 3 \| Residential mortgage loans - FVO
Assets [Abstract]
Residential mortgage loans — FVO	0	127
Recurring \| Level 3 \| U.S. corporate
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	12,452	11,768
Recurring \| Level 3 \| Foreign government
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	103	91
Recurring \| Level 3 \| Foreign corporate
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	11,949	13,667
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	1,646	3,127
Recurring \| Level 3 \| ABS & CLO
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	1,927	1,862
Recurring \| Level 3 \| Municipals
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	0	0
Recurring \| Level 3 \| CMBS
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	696	882
Other limited partnership interests \| Recurring
Assets [Abstract]
Investments, Fair Value Disclosure	$ 65	$ 99

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

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