Expenses - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2025 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 326
Compensation and Employee Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	211
Occupancy Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	69
Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring charges	24
Operating model changes
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 22