Insurance Liabilities (Policyholder Account Balances) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Policyholder Account Balance [Line Items]
Interest credited to policyholder account balances	$ 486	$ 554
Policyholder Account Balance, Ending Balance	85,620	84,799
Universal Life Insurance
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	2,074	2,028
Premiums and deposits	58	65
Surrenders and withdrawals	(8)	(20)
Benefit payments	(13)	(13)
Net transfers from (to) separate account	3	3
Interest credited to policyholder account balances	13	19
Policy charges	(45)	(48)
Changes related to embedded derivatives	1	0
Policyholder Account Balance, Ending Balance	$ 2,083	$ 2,034
Weighted-average crediting rate (2)	0.63%	0.94%
Variable Annuities
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	$ 3,265	$ 3,667
Premiums and deposits	11	14
Surrenders and withdrawals	(111)	(134)
Benefit payments	(18)	(23)
Net transfers from (to) separate account	14	28
Interest credited to policyholder account balances	23	23
Policy charges	(5)	(5)
Changes related to embedded derivatives	0	0
Policyholder Account Balance, Ending Balance	$ 3,179	$ 3,570
Weighted-average crediting rate (2)	0.71%	0.64%
Index-linked Annuities
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	$ 52,594	$ 48,605
Premiums and deposits	1,955	1,984
Surrenders and withdrawals	(2,197)	(1,614)
Benefit payments	(113)	(86)
Net transfers from (to) separate account	0	0
Interest credited to policyholder account balances	196	192
Policy charges	(12)	(8)
Changes related to embedded derivatives	(816)	(1,177)
Policyholder Account Balance, Ending Balance	$ 51,607	$ 47,896
Weighted-average crediting rate (2)	0.48%	0.48%
Fixed Rate Annuities
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	$ 13,252	$ 14,665
Premiums and deposits	57	105
Surrenders and withdrawals	(373)	(300)
Benefit payments	(98)	(95)
Net transfers from (to) separate account	0	0
Interest credited to policyholder account balances	133	141
Policy charges	0	0
Changes related to embedded derivatives	0	0
Policyholder Account Balance, Ending Balance	$ 12,971	$ 14,516
Weighted-average crediting rate (2)	1.01%	0.97%
ULSG
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	$ 4,461	$ 4,779
Premiums and deposits	151	157
Surrenders and withdrawals	(6)	(6)
Benefit payments	(20)	(14)
Net transfers from (to) separate account	0	0
Interest credited to policyholder account balances	38	39
Policy charges	(236)	(245)
Changes related to embedded derivatives	0	0
Policyholder Account Balance, Ending Balance	$ 4,388	$ 4,710
Weighted-average crediting rate (2)	0.86%	0.82%
Company-Owned Life Insurance
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	$ 646	$ 1,166
Premiums and deposits	0	0
Surrenders and withdrawals	0	0
Benefit payments	(5)	(2)
Net transfers from (to) separate account	0	(495)
Interest credited to policyholder account balances	8	6
Policy charges	(2)	(2)
Changes related to embedded derivatives	0	0
Policyholder Account Balance, Ending Balance	$ 647	$ 673
Weighted-average crediting rate (2)	1.08%	0.65%

Amount of interest expense for allocation to policyholder account balance.

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