Reportable Operating Segments and Geographic Operations - Geographic Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Revenues And Pretax Income Loss By Geographic Location [Line Items]
Total revenues net of interest expense	$ 72,229	$ 65,949	$ 60,515
Pretax income (loss) from continuing operations	13,795	12,895	10,513
United States
Segment Revenues And Pretax Income Loss By Geographic Location [Line Items]
Total revenues net of interest expense	56,015	51,471	47,140
Pretax income (loss) from continuing operations	13,054	12,919	10,717
EMEA
Segment Revenues And Pretax Income Loss By Geographic Location [Line Items]
Total revenues net of interest expense	7,073	6,216	5,633
Pretax income (loss) from continuing operations	1,255	935	854
APAC
Segment Revenues And Pretax Income Loss By Geographic Location [Line Items]
Total revenues net of interest expense	5,218	4,698	4,372
Pretax income (loss) from continuing operations	831	656	592
LACC
Segment Revenues And Pretax Income Loss By Geographic Location [Line Items]
Total revenues net of interest expense	4,194	3,845	3,571
Pretax income (loss) from continuing operations	907	803	760
Other Unallocated
Segment Revenues And Pretax Income Loss By Geographic Location [Line Items]
Total revenues net of interest expense	(271)	(281)	(201)
Pretax income (loss) from continuing operations	$ (2,252)	$ (2,418)	$ (2,410)