COMMISSIONS AND FEES; ADMINISTRATION AND OTHER FIDUCIARY FEES - Administration and Other Fiduciary Fees (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Commissions and fees | ||||
| Total administration and other fiduciary fees | $ 1,123 | $ 1,046 | $ 2,168 | $ 2,083 |
| Custody fees | ||||
| Commissions and fees | ||||
| Total administration and other fiduciary fees | 567 | 529 | 1,046 | 1,042 |
| Fiduciary fees | ||||
| Commissions and fees | ||||
| Total administration and other fiduciary fees | 422 | 388 | 855 | 780 |
| Guarantee fees | ||||
| Commissions and fees | ||||
| Total administration and other fiduciary fees | 134 | 129 | 267 | 261 |
| Administration and other fiduciary fees | ||||
| Commissions and fees | ||||
| Total administration and other fiduciary fees | 1,123 | 1,046 | 2,168 | 2,083 |
| Revenue not accounted for under ASC 606, revenue from contracts with customers | $ 134 | $ 129 | $ 267 | $ 261 |