Reportable Operating Segments and Geographic Operations - Geographic Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Revenues And Pretax Income Loss By Geographic Location [Line Items]
Total revenues net of interest expense	$ 65,949	$ 60,515	$ 52,862
Pretax income (loss) from continuing operations	12,895	10,513	9,585
United States
Segment Revenues And Pretax Income Loss By Geographic Location [Line Items]
Total revenues net of interest expense	51,471	47,140	41,396
Pretax income (loss) from continuing operations	12,919	10,717	10,383
EMEA
Segment Revenues And Pretax Income Loss By Geographic Location [Line Items]
Total revenues net of interest expense	6,216	5,633	4,871
Pretax income (loss) from continuing operations	935	854	550
APAC
Segment Revenues And Pretax Income Loss By Geographic Location [Line Items]
Total revenues net of interest expense	4,698	4,372	3,835
Pretax income (loss) from continuing operations	656	592	376
LACC
Segment Revenues And Pretax Income Loss By Geographic Location [Line Items]
Total revenues net of interest expense	3,845	3,571	2,917
Pretax income (loss) from continuing operations	803	760	500
Other Unallocated
Segment Revenues And Pretax Income Loss By Geographic Location [Line Items]
Total revenues net of interest expense	(281)	(201)	(157)
Pretax income (loss) from continuing operations	$ (2,418)	$ (2,410)	$ (2,224)