Fair Value (Recurring Fair Value Measurements) (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022	Jan. 01, 2021	Dec. 31, 2020
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	$ 283,857	$ 276,780
Equity securities	769	1,684
Unit-linked and FVO Securities (1)	10,204	9,668
Short-term investments (2)	6,921	4,935
Derivative assets	10,035	11,411
Market risk benefits	279	280
Reinsured MRB Assets			$ 51	$ 0
Separate account assets	145,946	146,038
Liabilities [Abstract]
Derivative liabilities	6,176	6,975
Embedded derivatives within liability host contracts	64	17
Market risk benefits	3,259	3,763	$ 7,901
Separate account liabilities	145,946	146,038
Recurring
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	283,857	276,780
Equity securities	769	1,684
Unit-linked and FVO Securities (1)	10,204	9,668
Short-term investments (2)	6,609	4,573
Other investments	1,311	1,132
Derivative assets	10,035	11,411
Market risk benefits	279	280
Reinsured MRB Assets	18	23
Separate account assets	145,946	146,038
Total assets (6)	459,028	451,589
Liabilities [Abstract]
Derivative liabilities	6,176	6,975
Embedded derivatives within liability host contracts	64	17
Market risk benefits	3,259	3,763
Total liabilities	9,510	10,796
Recurring | Interest rate
Assets [Abstract]
Derivative assets	3,968	4,572
Liabilities [Abstract]
Derivative liabilities	2,669	3,558
Recurring | Foreign currency exchange rate contracts
Assets [Abstract]
Derivative assets	5,396	5,888
Liabilities [Abstract]
Derivative liabilities	2,996	2,870
Recurring | Credit
Assets [Abstract]
Derivative assets	205	151
Liabilities [Abstract]
Derivative liabilities	104	107
Recurring | Equity market contracts
Assets [Abstract]
Derivative assets	466	800
Liabilities [Abstract]
Derivative liabilities	407	440
Recurring | Derivative Liabilities Within Separate Accounts
Liabilities [Abstract]
Separate account liabilities	11	41
Recurring | U.S. corporate
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	82,523	80,030
Recurring | Foreign corporate
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	53,690	52,572
Recurring | Foreign government
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	45,994	46,747
Recurring | U.S. government and agency
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	33,129	32,229
Recurring | RMBS
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	28,458	26,165
Recurring | ABS & CLO
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	17,480	16,822
Recurring | Municipals
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	12,324	12,152
Recurring | CMBS
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	10,259	10,063
Recurring | Level 1
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	16,798	15,959
Equity securities	420	1,293
Unit-linked and FVO Securities (1)	7,471	7,101
Short-term investments (2)	5,897	3,830
Other investments	0	0
Derivative assets	12	18
Market risk benefits	0	0
Reinsured MRB Assets	0	0
Separate account assets	66,293	65,107
Total assets (6)	96,891	93,308
Liabilities [Abstract]
Derivative liabilities	27	5
Embedded derivatives within liability host contracts	0	0
Market risk benefits	0	0
Total liabilities	34	13
Recurring | Level 1 | Interest rate
Assets [Abstract]
Derivative assets	3	2
Liabilities [Abstract]
Derivative liabilities	1	1
Recurring | Level 1 | Foreign currency exchange rate contracts
Assets [Abstract]
Derivative assets	0	8
Liabilities [Abstract]
Derivative liabilities	0	0
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	9	8
Liabilities [Abstract]
Derivative liabilities	26	4
Recurring | Level 1 | Derivative Liabilities Within Separate Accounts
Liabilities [Abstract]
Separate account liabilities	7	8
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	16,744	15,955
Recurring | Level 1 | RMBS
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	54	4
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	236,470	232,048
Equity securities	99	132
Unit-linked and FVO Securities (1)	1,676	1,780
Short-term investments (2)	694	686
Other investments	347	206
Derivative assets	9,945	11,094
Market risk benefits	0	0
Reinsured MRB Assets	0	0
Separate account assets	78,404	79,703
Total assets (6)	327,635	325,649
Liabilities [Abstract]
Derivative liabilities	5,857	6,501
Embedded derivatives within liability host contracts	0	0
Market risk benefits	0	0
Total liabilities	5,860	6,516
Recurring | Level 2 | Interest rate
Assets [Abstract]
Derivative assets	3,965	4,570
Liabilities [Abstract]
Derivative liabilities	2,376	3,153
Recurring | Level 2 | Foreign currency exchange rate contracts
Assets [Abstract]
Derivative assets	5,332	5,670
Liabilities [Abstract]
Derivative liabilities	2,996	2,820
Recurring | Level 2 | Credit
Assets [Abstract]
Derivative assets	198	69
Liabilities [Abstract]
Derivative liabilities	104	92
Recurring | Level 2 | Equity market contracts
Assets [Abstract]
Derivative assets	450	785
Liabilities [Abstract]
Derivative liabilities	381	436
Recurring | Level 2 | Derivative Liabilities Within Separate Accounts
Liabilities [Abstract]
Separate account liabilities	3	15
Recurring | Level 2 | U.S. corporate
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	69,534	67,578
Recurring | Level 2 | Foreign corporate
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	40,711	40,623
Recurring | Level 2 | Foreign government
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	45,934	46,644
Recurring | Level 2 | U.S. government and agency
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	16,385	16,274
Recurring | Level 2 | RMBS
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	26,700	24,515
Recurring | Level 2 | ABS & CLO
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	15,277	14,895
Recurring | Level 2 | Municipals
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	12,317	12,152
Recurring | Level 2 | CMBS
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	9,612	9,367
Recurring | Level 3
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	30,589	28,773
Equity securities	250	259
Unit-linked and FVO Securities (1)	1,057	787
Short-term investments (2)	18	57
Other investments	964	926
Derivative assets	78	299
Market risk benefits	279	280
Reinsured MRB Assets	18	23
Separate account assets	1,249	1,228
Total assets (6)	34,502	32,632
Liabilities [Abstract]
Derivative liabilities	292	469
Embedded derivatives within liability host contracts	64	17
Market risk benefits	3,259	3,763
Total liabilities	3,616	4,267
Recurring | Level 3 | Interest rate
Assets [Abstract]
Derivative assets	0	0
Liabilities [Abstract]
Derivative liabilities	292	404
Recurring | Level 3 | Foreign currency exchange rate contracts
Assets [Abstract]
Derivative assets	64	210
Liabilities [Abstract]
Derivative liabilities	0	50
Recurring | Level 3 | Credit
Assets [Abstract]
Derivative assets	7	82
Liabilities [Abstract]
Derivative liabilities	0	15
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	1	18
Recurring | Level 3 | U.S. corporate
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	12,989	12,452
Recurring | Level 3 | Foreign corporate
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	12,979	11,949
Recurring | Level 3 | Foreign government
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	60	103
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	1,704	1,646
Recurring | Level 3 | ABS & CLO
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	2,203	1,927
Recurring | Level 3 | Municipals
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	7	0
Recurring | Level 3 | CMBS
Assets [Abstract]
Estimated Fair Value of Fixed Maturity Securities AFS	647	696
OLPI | Recurring
Assets [Abstract]
Investments, Fair Value Disclosure	$ 65	$ 65