Separate Accounts - Schedule of Reconciliation of Separate Account Liabilities (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Separate Account, Liability [Roll Forward]
Balance as of beginning-of-year	$ 158,257
Balance as of end-of-period	171,483
Variable Annuities
Separate Account, Liability [Roll Forward]
Balance as of beginning-of-year	113,356	$ 105,573
Gross deposits	3,002	2,137
Withdrawals	(10,190)	(7,402)
Policyholder assessments	(1,970)	(1,883)
Change in market performance	15,664	6,320
Net transfers from (to) general account	608	447
Balance as of end-of-period	120,470	105,192
Cash surrender value	119,106	103,729
UL and Other
Separate Account, Liability [Roll Forward]
Balance as of beginning-of-year	25,150	20,920
Gross deposits	1,058	1,178
Withdrawals	(347)	(227)
Policyholder assessments	(742)	(714)
Change in market performance	3,945	1,573
Net transfers from (to) general account	(143)	(88)
Balance as of end-of-period	28,921	22,642
Cash surrender value	26,498	20,324
Retirement Plan Services
Separate Account, Liability [Roll Forward]
Balance as of beginning-of-year	19,699	16,996
Gross deposits	1,751	1,576
Withdrawals	(2,382)	(1,795)
Policyholder assessments	(134)	(121)
Change in market performance	3,065	1,316
Net transfers from (to) general account	34	(44)
Balance as of end-of-period	22,033	17,928
Cash surrender value	$ 22,018	$ 17,914