Non-U.S. Activities - Schedule of Results From Non-U.S. Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Total revenue	$ 13,944	$ 13,000	$ 11,945
Income before income tax expense	3,731	3,395	2,316
Non-U.S.
Segment Reporting Information [Line Items]
Total revenue	5,936	5,485	5,108
Income before income tax expense	1,493	1,376	1,057
U.S.
Segment Reporting Information [Line Items]
Total revenue	8,008	7,515	6,837
Income before income tax expense	$ 2,238	$ 2,019	$ 1,259