Investments - Schedule of Investment Funds, Including Related Parties and Consolidated VIEs (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Net Investment Income [Line Items]
Total investment funds, including related parties and consolidated VIEs	$ 22,649	$ 19,620
Percentage of Total	100.00%	100.00%
Nonrelated Party \| VIE, Primary Beneficiary
Net Investment Income [Line Items]
Carrying Value	$ 20,403	$ 17,660
Percentage of Total	90.10%	89.90%
Related Party
Net Investment Income [Line Items]
Carrying Value	$ 2,135	$ 1,853
Percentage of Total	9.40%	9.50%
Origination platforms \| Nonrelated Party \| VIE, Primary Beneficiary
Net Investment Income [Line Items]
Carrying Value	$ 7,715	$ 6,347
Percentage of Total	34.10%	32.30%
Origination platforms \| Related Party
Net Investment Income [Line Items]
Carrying Value	$ 33	$ 29
Percentage of Total	0.20%	0.20%
Retirement services platforms \| Related Party
Net Investment Income [Line Items]
Carrying Value	$ 1,526	$ 1,317
Percentage of Total	6.70%	6.70%
Equity \| Nonrelated Party
Net Investment Income [Line Items]
Carrying Value	$ 111	$ 107
Percentage of Total	0.50%	0.60%
Equity \| Nonrelated Party \| VIE, Primary Beneficiary
Net Investment Income [Line Items]
Carrying Value	$ 7,431	$ 7,597
Percentage of Total	32.80%	38.70%
Equity \| Related Party
Net Investment Income [Line Items]
Carrying Value	$ 244	$ 244
Percentage of Total	1.10%	1.20%
Credit \| Nonrelated Party \| VIE, Primary Beneficiary
Net Investment Income [Line Items]
Carrying Value	$ 4,477	$ 3,062
Percentage of Total	19.80%	15.60%
Credit \| Related Party
Net Investment Income [Line Items]
Carrying Value	$ 327	$ 253
Percentage of Total	1.40%	1.30%
Other \| Nonrelated Party \| VIE, Primary Beneficiary
Net Investment Income [Line Items]
Carrying Value	$ 780	$ 654
Percentage of Total	3.40%	3.30%
Other \| Related Party
Net Investment Income [Line Items]
Carrying Value	$ 5	$ 10
Percentage of Total	0.00%	0.10%