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Financial Assets And Financial Liabilities (Financial Assets and Liabilities Not Measured at Fair Value) (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024 | Sep. 30, 2024
--- | --- | --- | ---
Cash and cash equivalents | $ 5,128 | $ 3,633 | $ 3,595
Cash segregated for regulatory purposes | 48,784 | 36,600 | $ 35,216
Securities - segregated for regulatory purposes | 38,691 | 27,846 |
Securities borrowed | 11,568 | 5,369 |
Securities purchased under agreements to resell | 8,524 | 6,575 |
Receivables from customers | 77,588 | 64,432 |
Brokers, dealers and clearing organizations | 4,773 | 2,196 |
Interest Receivable | 488 | 446 |
Other assets | 1,551 | 1,121 |
Short-term borrowings | 10 | 14 |
Securities loaned | 27,031 | 16,248 |
Securities sold under agreements to repurchase | 894 |  |
Customers | 149,442 | 115,343 |
Brokers, dealers and clearing organizations | 1,541 | 476 |
Interest | 317 | 311 |
at Fair Value |  |  |
Cash and cash equivalents | 5,128 | 3,633 |
Cash segregated for regulatory purposes | 48,784 | 36,600 |
Securities - segregated for regulatory purposes | 32,509 | 21,353 |
Securities borrowed | 11,568 | 5,369 |
Securities purchased under agreements to resell | 8,524 | 6,575 |
Receivables from customers | 77,588 | 64,432 |
Brokers, dealers and clearing organizations | 4,773 | 2,196 |
Interest Receivable | 488 | 446 |
Other assets | 42 | 32 |
Total financial assets, not measured at fair value | 189,404 | 140,636 |
Short-term borrowings | 10 | 14 |
Securities loaned | 27,031 | 16,248 |
Securities sold under agreements to repurchase | 894 |  |
Customers | 149,442 | 115,343 |
Brokers, dealers and clearing organizations | 1,541 | 476 |
Interest | 317 | 311 |
Total financial liabilities, not measured at fair value | 179,235 | 132,392 |
Carrying Value |  |  |
Cash and cash equivalents | 5,128 | 3,633 |
Cash segregated for regulatory purposes | 48,784 | 36,600 |
Securities - segregated for regulatory purposes | 32,509 | 21,353 |
Securities borrowed | 11,568 | 5,369 |
Securities purchased under agreements to resell | 8,524 | 6,575 |
Receivables from customers | 77,588 | 64,432 |
Brokers, dealers and clearing organizations | 4,773 | 2,196 |
Interest Receivable | 488 | 446 |
Other assets | 41 | 30 |
Total financial assets, not measured at fair value | 189,403 | 140,634 |
Short-term borrowings | 10 | 14 |
Securities loaned | 27,031 | 16,248 |
Securities sold under agreements to repurchase | 894 |  |
Customers | 149,442 | 115,343 |
Brokers, dealers and clearing organizations | 1,541 | 476 |
Interest | 317 | 311 |
Total financial liabilities, not measured at fair value | 179,235 | 132,392 |
Level 1 [Member] |  |  |
Cash and cash equivalents | 5,128 | 3,633 |
Cash segregated for regulatory purposes | 48,784 | 36,600 |
Total financial assets, not measured at fair value | 53,912 | 40,233 |
Short-term borrowings |  |  |
Securities loaned |  |  |
Securities sold under agreements to repurchase |  |  |
Customers |  |  |
Brokers, dealers and clearing organizations |  |  |
Interest |  |  |
Total financial liabilities, not measured at fair value |  |  |
Level 2 [Member] |  |  |
Securities - segregated for regulatory purposes | 32,509 | 21,353 |
Securities borrowed | 11,568 | 5,369 |
Securities purchased under agreements to resell | 8,524 | 6,575 |
Receivables from customers | 77,588 | 64,432 |
Brokers, dealers and clearing organizations | 4,773 | 2,196 |
Interest Receivable | 488 | 446 |
Other assets | 3 | 3 |
Total financial assets, not measured at fair value | 135,453 | 100,374 |
Short-term borrowings | 10 | 14 |
Securities loaned | 27,031 | 16,248 |
Securities sold under agreements to repurchase | 894 |  |
Customers | 149,442 | 115,343 |
Brokers, dealers and clearing organizations | 1,541 | 476 |
Interest | 317 | 311 |
Total financial liabilities, not measured at fair value | 179,235 | 132,392 |
Level 3 [Member] |  |  |
Cash and cash equivalents |  |  |
Cash segregated for regulatory purposes |  |  |
Securities - segregated for regulatory purposes |  |  |
Securities borrowed |  |  |
Securities purchased under agreements to resell |  |  |
Receivables from customers |  |  |
Brokers, dealers and clearing organizations |  |  |
Interest Receivable |  |  |
Other assets | 39 | 29 |
Total financial assets, not measured at fair value | 39 | 29 |
Short-term borrowings |  |  |
Securities loaned |  |  |
Securities sold under agreements to repurchase |  |  |
Customers |  |  |
Brokers, dealers and clearing organizations |  |  |
Interest |  |  |
Total financial liabilities, not measured at fair value |  |  |

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