Variable Interest Entities - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Variable Interest Entity [Line Items]
Other investments	$ 8,475		$ 7,812
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Other investments	5,500		5,500
Variable Interest Entity, Not Primary Beneficiary | Sponsored Investment Funds
Variable Interest Entity [Line Items]
Maximum exposure to loss related to unconsolidated VIE's	161		$ 135
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Other comprehensive income (loss), net of tax	$ 0	$ 0