Insurance Liabilities (Policyholder Account Balances) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Policyholder Account Balance [Line Items]
Interest credited to policyholder account balances	$ 502	$ 422
Policyholder Account Balance, Ending Balance	84,159	76,120
Universal Life Insurance
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	2,550	2,658
Premiums and deposits	61	55
Surrenders and withdrawals	(22)	(70)
Benefit payments	(15)	(25)
Net transfers from (to) separate account	16	12
Interest credited to policyholder account balances	25	22
Policy charges	(54)	(57)
Changes related to embedded derivatives	0	0
Policyholder Account Balance, Ending Balance	$ 2,561	$ 2,595
Weighted-average crediting rate (2)	0.98%	0.84%
Variable Annuities
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	$ 4,307	$ 4,908
Premiums and deposits	19	27
Surrenders and withdrawals	(187)	(177)
Benefit payments	(25)	(36)
Net transfers from (to) separate account	34	11
Interest credited to policyholder account balances	28	41
Policy charges	(6)	(7)
Changes related to embedded derivatives	0	0
Policyholder Account Balance, Ending Balance	$ 4,170	$ 4,767
Weighted-average crediting rate (2)	0.66%	0.85%
Index-linked Annuities
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	$ 41,627	$ 33,896
Premiums and deposits	2,052	1,677
Surrenders and withdrawals	(1,274)	(785)
Benefit payments	(77)	(50)
Net transfers from (to) separate account	0	0
Interest credited to policyholder account balances	138	96
Policy charges	(4)	(2)
Changes related to embedded derivatives	1,888	1,090
Policyholder Account Balance, Ending Balance	$ 44,350	$ 35,922
Weighted-average crediting rate (2)	0.41%	0.32%
Fixed Rate Annuities
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	$ 14,672	$ 14,274
Premiums and deposits	637	912
Surrenders and withdrawals	(441)	(506)
Benefit payments	(84)	(102)
Net transfers from (to) separate account	0	0
Interest credited to policyholder account balances	139	106
Policy charges	0	0
Changes related to embedded derivatives	0	0
Policyholder Account Balance, Ending Balance	$ 14,923	$ 14,684
Weighted-average crediting rate (2)	0.94%	0.73%
ULSG
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	$ 5,052	$ 5,307
Premiums and deposits	162	171
Surrenders and withdrawals	(4)	(6)
Benefit payments	(17)	(38)
Net transfers from (to) separate account	0	0
Interest credited to policyholder account balances	40	43
Policy charges	(249)	(258)
Changes related to embedded derivatives	0	0
Policyholder Account Balance, Ending Balance	$ 4,984	$ 5,219
Weighted-average crediting rate (2)	0.80%	0.82%
Company-Owned Life Insurance
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	$ 653	$ 641
Premiums and deposits	0	0
Surrenders and withdrawals	0	0
Benefit payments	(3)	(2)
Net transfers from (to) separate account	200	0
Interest credited to policyholder account balances	8	7
Policy charges	(2)	(2)
Changes related to embedded derivatives	0	0
Policyholder Account Balance, Ending Balance	$ 856	$ 644
Weighted-average crediting rate (2)	1.06%	1.09%

Amount of interest expense for allocation to policyholder account balance.

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