Supplemental Disclosures to the Consolidated Statements of Cash Flows (Schedule of Supplemental Cash Flow Disclosures) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Supplemental Cash Flow Information [Abstract] | |||
| Assets acquired, excluding cash, cash equivalents, and cash and cash equivalents held in a fiduciary capacity | $ 911 | $ 9,724 | $ 1,292 |
| Fiduciary liabilities assumed | (47) | (421) | (93) |
| Liabilities assumed | (73) | (571) | (182) |
| Non-controlling interests assumed | (8) | 0 | 0 |
| Fair value of previously-held equity method investment | (15) | 0 | 0 |
| Contingent/deferred purchase consideration | (116) | (190) | (41) |
| Net cash outflow for acquisitions | 652 | 8,542 | 976 |
| Interest paid | $ 885 | $ 591 | $ 499 |