Variable Interest Entities (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Assets	$ 303,568,000,000	$ 314,624,000,000
Total liabilities	277,920,000,000	287,261,000,000
VIE - primary beneficiary
Variable Interest Entity [Line Items]
Assets	0	0
Total liabilities	0	0
VIE - not primary beneficiary | Unconsolidated Funds
Variable Interest Entity [Line Items]
Potential maximum loss exposure of unconsolidated funds	15,000,000	17,000,000
VIE - not primary beneficiary | Low Income Housing, Production and Investment Tax Credit Entities
Variable Interest Entity [Line Items]
Potential maximum loss exposure of unconsolidated funds	$ 1,660,000,000	$ 1,690,000,000