Variable Interest Entities - Narrative (Details) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Variable Interest Entity [Line Items]
Assets	$ 338,003,000,000	$ 297,258,000,000
Total liabilities	313,570,000,000	273,459,000,000
Contingent Commitment for Tax Credit Investments
Variable Interest Entity [Line Items]
Other commitment	149,000,000
Low Income Housing Tax Credit
Variable Interest Entity [Line Items]
Investment owned	788,000,000
Production Tax Credit
Variable Interest Entity [Line Items]
Investment owned	365,000,000
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	18,000,000	18,000,000
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	1,280,000,000	$ 1,330,000,000
Deferred contribution payments included in accrued expenses and other liabilities	$ 48,000,000