Business Segment Information - Business Segment Reconciliations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting, Revenue Reconciling Item [Line Items]
Segments’ total revenue, net of interest expense	$ 95,388	$ 89,540	$ 86,027
Total revenue, net of interest expense	94,950	89,113	85,528
Net income	27,528	31,978	17,894
Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Segments’ total revenue, net of interest expense	100,750	94,883	89,598
Total revenue, net of interest expense			85,528
Net income	29,180	30,589	18,293
Asset and liability management activities
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue, net of interest expense	(164)	(4)	375
Net income	(122)	11	279
Liquidating businesses, eliminations and other
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue, net of interest expense	(5,198)	(5,339)	(3,946)
Net income	(1,530)	1,378	(678)
FTE basis adjustment
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenue, net of interest expense	$ (438)	$ (427)	$ (499)