Fair Values - Nonredeemable Funds by Contractual Maturity (Details) $ in Millions	Sep. 30, 2022 USD ($)
Private equity
Carrying Value of Nonredeemable Funds by Contractual Maturity
Less than 5 years	$ 1,035
5-10 years	1,196
Over 10 years	564
Total	2,795
Real estate
Carrying Value of Nonredeemable Funds by Contractual Maturity
Less than 5 years	902
5-10 years	1,380
Over 10 years	34
Total	$ 2,316