Insurance Liabilities (Policyholder Account Balances) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Policyholder Account Balance [Line Items]
Interest credited to policyholder account balances	$ 554	$ 496
Policyholder Account Balance, Ending Balance	84,799	83,294
Universal Life Insurance
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	2,028	1,980
Premiums and deposits	65	56
Surrenders and withdrawals	(20)	(12)
Benefit payments	(13)	(15)
Net transfers from (to) separate account	3	10
Interest credited to policyholder account balances	19	20
Policy charges	(48)	(49)
Changes related to embedded derivatives	0	0
Policyholder Account Balance, Ending Balance	$ 2,034	$ 1,990
Weighted-average crediting rate (2)	0.94%	1.01%
Variable Annuities
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	$ 3,667	$ 4,111
Premiums and deposits	14	19
Surrenders and withdrawals	(134)	(172)
Benefit payments	(23)	(24)
Net transfers from (to) separate account	28	28
Interest credited to policyholder account balances	23	25
Policy charges	(5)	(5)
Changes related to embedded derivatives	0	0
Policyholder Account Balance, Ending Balance	$ 3,570	$ 3,982
Weighted-average crediting rate (2)	0.64%	0.62%
Index-linked Annuities
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	$ 48,605	$ 41,627
Premiums and deposits	1,984	2,052
Surrenders and withdrawals	(1,614)	(1,274)
Benefit payments	(86)	(77)
Net transfers from (to) separate account	0	0
Interest credited to policyholder account balances	192	138
Policy charges	(8)	(4)
Changes related to embedded derivatives	(1,177)	1,888
Policyholder Account Balance, Ending Balance	$ 47,896	$ 44,350
Weighted-average crediting rate (2)	0.48%	0.41%
Fixed Rate Annuities
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	$ 14,665	$ 14,672
Premiums and deposits	105	637
Surrenders and withdrawals	(300)	(441)
Benefit payments	(95)	(84)
Net transfers from (to) separate account	0	0
Interest credited to policyholder account balances	141	139
Policy charges	0	0
Changes related to embedded derivatives	0	0
Policyholder Account Balance, Ending Balance	$ 14,516	$ 14,923
Weighted-average crediting rate (2)	0.97%	0.94%
ULSG
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	$ 4,779	$ 5,052
Premiums and deposits	157	162
Surrenders and withdrawals	(6)	(4)
Benefit payments	(14)	(17)
Net transfers from (to) separate account	0	0
Interest credited to policyholder account balances	39	40
Policy charges	(245)	(249)
Changes related to embedded derivatives	0	0
Policyholder Account Balance, Ending Balance	$ 4,710	$ 4,984
Weighted-average crediting rate (2)	0.82%	0.80%
Company-Owned Life Insurance
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance	$ 1,166	$ 653
Premiums and deposits	0	0
Surrenders and withdrawals	0	0
Benefit payments	(2)	(3)
Net transfers from (to) separate account	(495)	200
Interest credited to policyholder account balances	6	8
Policy charges	(2)	(2)
Changes related to embedded derivatives	0	0
Policyholder Account Balance, Ending Balance	$ 673	$ 856
Weighted-average crediting rate (2)	0.65%	1.06%