Consolidated Securitization Vehicles and Other Variable Interest Entities - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Unconsolidated VIEs, individual investments	$ 835	$ 835
Variable interest entity, reporting entity involvement, maximum loss exposure, amount	820	830
Minimum | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Unconsolidated VIEs, individual investments	1	1
Maximum | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Unconsolidated VIEs, individual investments	21	$ 21
Subprime | Residential Mortgage
Variable Interest Entity [Line Items]
Financing receivable, purchases	$ 934