Variable Interest Entities - Schedule of Statements of Operations Activity of the Consolidated VIEs (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Net Investment Income [Line Items]
Net recognized investment gains on trading securities	$ 73	$ 82	$ 209	$ 40
Net recognized investment gains (losses) on mortgage loans	204	1,139	2,003	874
Other gains (losses)	521	(1,858)	(1,707)	(384)
Total Revenues	9,823	7,773	22,185	20,831
Retirement Services
Net Investment Income [Line Items]
Net investment income	5,013	4,101	14,130	11,481
Net gains (losses) from investment activities	2,254	1,539	1,421	3,082
Total Revenues	8,336	6,851	18,545	17,820
VIE, Primary Beneficiary \| Retirement Services
Net Investment Income [Line Items]
Net investment income	97	82	269	225
Net recognized investment gains on trading securities	6	29	12	21
Net recognized investment gains (losses) on mortgage loans	8	24	15	(4)
Net recognized investment gains on investment funds	513	415	1,453	1,094
Other gains (losses)	30	2	47	(7)
Net gains (losses) from investment activities	557	470	1,527	1,104
Total Revenues	654	552	1,796	1,329
VIE, Primary Beneficiary \| Trading securities \| Retirement Services
Net Investment Income [Line Items]
Net investment income	54	39	155	104
VIE, Primary Beneficiary \| Mortgage loans \| Retirement Services
Net Investment Income [Line Items]
Net investment income	41	30	122	91
VIE, Primary Beneficiary \| Investment funds \| Retirement Services
Net Investment Income [Line Items]
Net investment income	7	22	28	43
VIE, Primary Beneficiary \| Other \| Retirement Services
Net Investment Income [Line Items]
Net investment income	$ (5)	$ (9)	$ (36)	$ (13)

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