Separate Accounts - Schedule of Reconciliation of Separate Account Liabilities (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Separate Account, Liability [Roll Forward]
Balance as of beginning-of-year	$ 168,438
Balance as of end-of-period	172,942
Variable Annuities
Separate Account, Liability [Roll Forward]
Balance as of beginning-of-year	117,998	$ 113,356
Gross deposits	2,831	1,925
Withdrawals	(7,683)	(6,604)
Policyholder assessments	(1,299)	(1,301)
Change in market performance	7,290	9,026
Net transfers from (to) general account	908	368
Balance as of end-of-period	120,045	116,770
Cash surrender value	118,658	115,389
UL and Other
Separate Account, Liability [Roll Forward]
Balance as of beginning-of-year	28,841	25,150
Gross deposits	787	695
Withdrawals	(480)	(193)
Policyholder assessments	(494)	(493)
Change in market performance	2,025	2,335
Net transfers from (to) general account	(63)	(113)
Balance as of end-of-period	30,616	27,381
Cash surrender value	25,814	24,979
Retirement Plan Services
Separate Account, Liability [Roll Forward]
Balance as of beginning-of-year	21,541	19,699
Gross deposits	1,177	1,105
Withdrawals	(1,805)	(1,514)
Policyholder assessments	(91)	(89)
Change in market performance	1,451	1,802
Net transfers from (to) general account	(53)	(10)
Balance as of end-of-period	22,220	20,993
Cash surrender value	$ 22,205	$ 20,979