Non-U.S. Activities - Schedule of Results from Non-U.S. Operations (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting Information [Line Items]
Total revenue	$ 3,545	$ 3,259	$ 10,277	$ 9,588
Income before income tax expense	1,102	925	2,813	2,435
Non-U.S.
Segment Reporting Information [Line Items]
Total revenue	1,504	1,339	4,360	4,071
Income before income tax expense	438	326	1,103	968
U.S.
Segment Reporting Information [Line Items]
Total revenue	2,041	1,920	5,917	5,517
Income before income tax expense	$ 664	$ 599	$ 1,710	$ 1,467

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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