Insurance Liabilities (Policyholder Account Balances) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	$ 72,602
Interest credited to policyholder account balances	1,801	$ 1,313	$ 1,243
Policyholder Account Balance, Ending Balance	80,193	72,602
Universal Life Insurance
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	2,100	2,134	2,110
Premiums and deposits	210	199	290
Surrenders and withdrawals	(129)	(49)	(48)
Benefit payments	(59)	(59)	(55)
Net transfers from (to) separate account	18	21	17
Interest credited to policyholder account balances	40	56	84
Policy charges	(200)	(202)	(264)
Changes related to embedded derivatives	0	0	0
Policyholder Account Balance, Ending Balance	$ 1,980	$ 2,100	$ 2,134
Weighted-average crediting rate (2)	2.03%	2.65%	3.97%
Variable Annuities
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	$ 4,664	$ 4,475	$ 4,605
Premiums and deposits	75	145	194
Surrenders and withdrawals	(647)	(453)	(566)
Benefit payments	(101)	(104)	(95)
Net transfers from (to) separate account	14	131	238
Interest credited to policyholder account balances	129	493	140
Policy charges	(23)	(23)	(41)
Changes related to embedded derivatives	0	0	0
Policyholder Account Balance, Ending Balance	$ 4,111	$ 4,664	$ 4,475
Weighted-average crediting rate (2)	2.91%	10.91%	3.07%
Index-linked Annuities
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	$ 33,897	$ 32,000	$ 23,274
Premiums and deposits	7,183	6,632	7,054
Surrenders and withdrawals	(3,732)	(2,220)	(1,419)
Benefit payments	(240)	(180)	(151)
Net transfers from (to) separate account	0	0	0
Interest credited to policyholder account balances	445	392	365
Policy charges	(11)	(8)	(6)
Changes related to embedded derivatives	4,085	(2,719)	2,883
Policyholder Account Balance, Ending Balance	$ 41,627	$ 33,897	$ 32,000
Weighted-average crediting rate (2)	1.47%	1.16%	1.12%
Fixed Rate Annuities
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	$ 14,274	$ 11,849	$ 12,349
Premiums and deposits	2,694	3,676	114
Surrenders and withdrawals	(2,405)	(904)	(610)
Benefit payments	(377)	(345)	(342)
Net transfers from (to) separate account	0	0	0
Interest credited to policyholder account balances	486	(2)	338
Policy charges	0	0	0
Changes related to embedded derivatives	0	0	0
Policyholder Account Balance, Ending Balance	$ 14,672	$ 14,274	$ 11,849
Weighted-average crediting rate (2)	3.31%	(0.02%)	2.79%
ULSG
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	$ 5,307	$ 5,569	$ 5,823
Premiums and deposits	660	697	687
Surrenders and withdrawals	(23)	(32)	(46)
Benefit payments	(85)	(84)	(77)
Net transfers from (to) separate account	0	0	0
Interest credited to policyholder account balances	208	197	186
Policy charges	(1,015)	(1,040)	(1,004)
Changes related to embedded derivatives	0	0	0
Policyholder Account Balance, Ending Balance	$ 5,052	$ 5,307	$ 5,569
Weighted-average crediting rate (2)	4.02%	3.62%	3.27%
Company-Owned Life Insurance
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	$ 641	$ 646	$ 679
Premiums and deposits	0	0	0
Surrenders and withdrawals	0	0	0
Benefit payments	(8)	(8)	(10)
Net transfers from (to) separate account	1	(13)	(35)
Interest credited to policyholder account balances	28	23	24
Policy charges	(9)	(7)	(12)
Changes related to embedded derivatives	0	0	0
Policyholder Account Balance, Ending Balance	$ 653	$ 641	$ 646
Weighted-average crediting rate (2)	4.33%	3.41%	3.66%