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Contract revenue - Disaggregation of Contract Revenues (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Jun. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee and other revenue | $ 3,845 | $ 3,825 | $ 3,600 | $ 11,303 | $ 10,654
Net income (loss) attributable to noncontrolling interests | 12 | 12 | 7 | 26 | 11
Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 3,434 | 3,394 | 3,215 | 10,051 | 9,537
Fee and other revenue - not in scope of ASC 606 | 399 | 419 | 378 | 1,226 | 1,106
Total fee and other revenue | 3,833 | 3,813 | 3,593 | 11,277 | 10,643
Investment services fees | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 2,556 | 2,556 | 2,327 | 7,495 | 6,929
Investment management and performance fees | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 778 | 754 | 799 | 2,280 | 2,336
Financing-related fees | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 29 | 15 | 17 | 67 | 58
Distribution and servicing fees | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 37 | 37 | 39 | 110 | 122
Investment and other revenue | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 34 | 32 | 33 | 99 | 92
Securities Services | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 1,533 | 1,533 | 1,374 | 4,460 | 4,108
Fee and other revenue - not in scope of ASC 606 | 256 | 266 | 231 | 798 | 697
Total fee and other revenue | 1,789 | 1,799 | 1,605 | 5,258 | 4,805
Securities Services | Investment services fees | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 1,438 | 1,449 | 1,296 | 4,198 | 3,883
Securities Services | Investment management and performance fees | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 0 | 0 | 0 | 0 | 0
Securities Services | Financing-related fees | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 18 | 11 | 12 | 44 | 39
Securities Services | Distribution and servicing fees | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 1 | 1 | 1 | 3 | 2
Securities Services | Investment and other revenue | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 76 | 72 | 65 | 215 | 184
Market and Wealth Services | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 1,158 | 1,140 | 1,060 | 3,408 | 3,140
Fee and other revenue - not in scope of ASC 606 | 85 | 96 | 70 | 260 | 202
Total fee and other revenue | 1,243 | 1,236 | 1,130 | 3,668 | 3,342
Market and Wealth Services | Investment services fees | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 1,109 | 1,099 | 1,021 | 3,273 | 3,022
Market and Wealth Services | Investment management and performance fees | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 3 | 3 | 1 | 9 | 5
Market and Wealth Services | Financing-related fees | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 11 | 3 | 5 | 22 | 18
Market and Wealth Services | Distribution and servicing fees | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | (33) | (34) | (30) | (100) | (89)
Market and Wealth Services | Investment and other revenue | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 68 | 69 | 63 | 204 | 184
Investment and Wealth Management | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 766 | 744 | 800 | 2,248 | 2,347
Fee and other revenue - not in scope of ASC 606 | 17 | 16 | 4 | 33 | 40
Total fee and other revenue | 783 | 760 | 804 | 2,281 | 2,387
Net income (loss) attributable to noncontrolling interests | 12 | 12 | 7 | 26 | 11
Investment and Wealth Management | Investment services fees | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 25 | 26 | 27 | 76 | 76
Investment and Wealth Management | Investment management and performance fees | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 779 | 754 | 800 | 2,281 | 2,340
Investment and Wealth Management | Financing-related fees | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 0 | 1 | 0 | 1 | 1
Investment and Wealth Management | Distribution and servicing fees | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 69 | 69 | 68 | 206 | 207
Investment and Wealth Management | Investment and other revenue | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | (107) | (106) | (95) | (316) | (277)
Other | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | (23) | (23) | (19) | (65) | (58)
Fee and other revenue - not in scope of ASC 606 | 41 | 41 | 73 | 135 | 167
Total fee and other revenue | 18 | 18 | 54 | 70 | 109
Other | Investment services fees | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | (16) | (18) | (17) | (52) | (52)
Other | Investment management and performance fees | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | (4) | (3) | (2) | (10) | (9)
Other | Financing-related fees | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 0 | 0 | 0 | 0 | 0
Other | Distribution and servicing fees | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | 0 | 1 | 0 | 1 | 2
Other | Investment and other revenue | Operating segments |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Total fee revenue and other revenue - contract revenue | $ (3) | $ (3) | $ 0 | $ (4) | $ 1

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