Separate Accounts - Schedule of Reconciliation of Separate Account Liabilities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Separate Account, Liability [Roll Forward]
Balance as of beginning-of-year	$ 180,092
Balance as of end-of-period	172,043
Variable Annuities
Separate Account, Liability [Roll Forward]
Balance as of beginning-of-year	122,945	$ 117,998
Gross deposits	1,354	1,557
Withdrawals	(4,600)	(3,915)
Policyholder assessments	(667)	(656)
Change in market performance	(3,140)	(1,798)
Net transfers from (to) general account	824	449
Balance as of end-of-period	116,716	113,635
Cash surrender value	115,301	112,239
UL and Other
Separate Account, Liability [Roll Forward]
Balance as of beginning-of-year	34,038	28,841
Gross deposits	416	353
Withdrawals	(216)	(204)
Policyholder assessments	(252)	(246)
Change in market performance	(681)	(624)
Net transfers from (to) general account	(68)	(14)
Balance as of end-of-period	33,237	28,106
Cash surrender value	30,835	23,577
Retirement Plan Services
Separate Account, Liability [Roll Forward]
Balance as of beginning-of-year	23,047	21,541
Gross deposits	560	627
Withdrawals	(1,002)	(902)
Policyholder assessments	(49)	(46)
Change in market performance	(518)	(478)
Net transfers from (to) general account	(7)	(34)
Balance as of end-of-period	22,031	20,708
Cash surrender value	$ 22,018	$ 20,695