Insurance Liabilities (Policyholder Account Balances) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Policyholder Account Balance [Line Items]
Interest credited to policyholder account balances	$ 531	$ 503	$ 1,085	$ 999
Policyholder Account Balance, Ending Balance	87,240	85,015	87,240	85,015
Universal Life Insurance
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance			2,028	1,980
Premiums and deposits			123	111
Surrenders and withdrawals			(35)	(31)
Benefit payments			(26)	(25)
Net transfers from (to) separate account			6	21
Interest credited to policyholder account balances			42	39
Policy charges			(98)	(97)
Changes related to embedded derivatives			0	0
Policyholder Account Balance, Ending Balance	$ 2,040	$ 1,998	$ 2,040	$ 1,998
Weighted-average crediting rate (2)	2.06%	1.96%	2.06%	1.96%
Variable Annuities
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance			$ 3,667	$ 4,111
Premiums and deposits			26	34
Surrenders and withdrawals			(268)	(324)
Benefit payments			(41)	(45)
Net transfers from (to) separate account			55	49
Interest credited to policyholder account balances			48	51
Policy charges			(11)	(11)
Changes related to embedded derivatives			0	0
Policyholder Account Balance, Ending Balance	$ 3,476	$ 3,865	$ 3,476	$ 3,865
Weighted-average crediting rate (2)	1.34%	1.28%	1.34%	1.28%
Index-linked Annuities
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance			$ 48,605	$ 41,627
Premiums and deposits			4,001	4,236
Surrenders and withdrawals			(3,547)	(2,510)
Benefit payments			(173)	(151)
Net transfers from (to) separate account			0	0
Interest credited to policyholder account balances			378	291
Policy charges			(17)	(9)
Changes related to embedded derivatives			990	2,605
Policyholder Account Balance, Ending Balance	$ 50,237	$ 46,089	$ 50,237	$ 46,089
Weighted-average crediting rate (2)	0.96%	0.85%	0.96%	0.85%
Fixed Rate Annuities
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance			$ 14,665	$ 14,672
Premiums and deposits			520	687
Surrenders and withdrawals			(666)	(736)
Benefit payments			(182)	(178)
Net transfers from (to) separate account			0	0
Interest credited to policyholder account balances			282	281
Policy charges			0	0
Changes related to embedded derivatives			0	0
Policyholder Account Balance, Ending Balance	$ 14,619	$ 14,726	$ 14,619	$ 14,726
Weighted-average crediting rate (2)	1.93%	1.90%	1.93%	1.90%
ULSG
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Beginning Balance			$ 4,779	$ 5,052
Premiums and deposits			313	328
Surrenders and withdrawals			(13)	(10)
Benefit payments			(49)	(39)
Net transfers from (to) separate account			0	0
Interest credited to policyholder account balances			77	82
Policy charges			(488)	(499)
Changes related to embedded derivatives			0	0
Policyholder Account Balance, Ending Balance	$ 4,619	$ 4,914	$ 4,619	$ 4,914
Weighted-average crediting rate (2)	1.64%	1.65%	1.64%	1.65%
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			(4)	(5)
Net transfers from (to) separate account			(525)	(1)
Interest credited to policyholder account balances			12	18
Policy charges			(4)	(6)
Changes related to embedded derivatives			0	0
Policyholder Account Balance, Ending Balance	$ 645	$ 659	$ 645	$ 659
Weighted-average crediting rate (2)	1.45%	2.49%	1.45%	2.49%