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Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Disaggregation of Revenue [Line Items] |  |  |  |
Cash and cash equivalents | $ 264 | $ 369 | $ 897 | $ 1,205
Cash and investments segregated | 494 | 345 | 1,412 | 1,014
Receivables from brokerage clients | 1,490 | 1,431 | 4,204 | 4,042
Available for sale securities | 360 | 531 | 1,198 | 1,680
Held to maturity securities | 587 | 650 | 1,811 | 1,998
Bank loans | 557 | 484 | 1,568 | 1,384
Securities lending revenue | 183 | 87 | 339 | 258
Other interest revenue | 21 | 31 | 71 | 105
Interest revenue | 3,956 | 3,928 | 11,500 | 11,686
Bank deposits | (248) | (841) | (1,010) | (2,602)
Payables to brokers, dealers, and clearing organizations | (188) | (118) | (492) | (230)
Payables to brokerage clients | (97) | (79) | (217) | (229)
Other short-term borrowings | (87) | (150) | (256) | (382)
Federal Home Loan Bank borrowings | (79) | (310) | (322) | (988)
Long-term debt | (207) | (208) | (625) | (640)
Other interest expense | 0 | 0 | 0 | (2)
Interest expense | (906) | (1,706) | (2,922) | (5,073)
Net interest revenue | 3,050 | 2,222 | 8,578 | 6,613
Total net revenues | 6,135 | 4,847 | 17,585 | 14,277
Asset management and administration fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 1,673 | 1,476 | 4,773 | 4,207
Mutual funds, ETFs, and CTFs |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 946 | 827 | 2,695 | 2,370
Managed investing solutions |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 619 | 559 | 1,777 | 1,572
Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 108 | 90 | 301 | 265
Trading revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 995 | 797 | 2,855 | 2,391
Commissions |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 453 | 388 | 1,315 | 1,184
Order flow revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 490 | 357 | 1,399 | 1,066
Principal transactions |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 52 | 52 | 141 | 141
Bank deposit account fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | 247 | 152 | 739 | 488
Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with customers | $ 170 | $ 200 | $ 640 | $ 578

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