Policyholder Account Balances - Summary of Balances and Changes in Policyholder Account Balances (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Policyholder Account Balance [Roll Forward]
Balance as of beginning-of-year			$ 135,904
Interest credited	$ 961	$ 849	1,897	$ 1,672
Balance as of end-of-period	139,184		139,184
Variable Annuities
Policyholder Account Balance [Roll Forward]
Balance as of beginning-of-year			40,060	35,267
Gross deposits			3,552	2,893
Withdrawals			(1,934)	(1,234)
Policyholder assessments			(3)	(1)
Net transfers from (to) separate account			(1,353)	(619)
Interest credited			469	403
Change in fair value of embedded derivative instruments and other			1,777	317
Balance as of end-of-period	$ 42,568	$ 37,026	$ 42,568	$ 37,026
Weighted-average crediting rate	2.30%	2.30%	2.30%	2.30%
Net amount at risk	$ 1,594	$ 1,689	$ 1,594	$ 1,689
Cash surrender value	41,161	35,740	41,161	35,740
Fixed Annuities
Policyholder Account Balance [Roll Forward]
Balance as of beginning-of-year			28,710	25,941
Gross deposits			1,327	2,099
Withdrawals			(1,257)	(1,741)
Policyholder assessments			(30)	(30)
Net transfers from (to) separate account			0	0
Interest credited			522	437
Change in fair value of embedded derivative instruments and other			128	106
Balance as of end-of-period	$ 29,400	$ 26,812	$ 29,400	$ 26,812
Weighted-average crediting rate	3.60%	3.30%	3.60%	3.30%
Net amount at risk	$ 438	$ 272	$ 438	$ 272
Cash surrender value	28,098	25,640	28,098	25,640
UL and Other
Policyholder Account Balance [Roll Forward]
Balance as of beginning-of-year			35,663	36,242
Gross deposits			1,630	1,706
Withdrawals			(750)	(806)
Policyholder assessments			(2,151)	(2,186)
Net transfers from (to) separate account			154	63
Interest credited			715	708
Change in fair value of embedded derivative instruments and other			121	49
Balance as of end-of-period	$ 35,382	$ 35,776	$ 35,382	$ 35,776
Weighted-average crediting rate	4.00%	3.90%	4.00%	3.90%
Net amount at risk	$ 288,155	$ 294,997	$ 288,155	$ 294,997
Cash surrender value	31,328	31,460	31,328	31,460
Retirement Plan Services
Policyholder Account Balance [Roll Forward]
Balance as of beginning-of-year			23,843	23,619
Gross deposits			1,781	1,921
Withdrawals			(2,749)	(2,433)
Policyholder assessments			(9)	(8)
Net transfers from (to) separate account			217	254
Interest credited			336	347
Change in fair value of embedded derivative instruments and other			0	0
Balance as of end-of-period	$ 23,419	$ 23,700	$ 23,419	$ 23,700
Weighted-average crediting rate	2.80%	3.00%	2.80%	3.00%
Net amount at risk	$ 2	$ 2	$ 2	$ 2
Cash surrender value	$ 23,383	$ 23,667	$ 23,383	$ 23,667