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Financial Assets And Financial Liabilities (Financial Assets and Liabilities Not Measured at Fair Value) (Details) - USD ($) $ in Millions | Sep. 30, 2024 | Dec. 31, 2023 | Sep. 30, 2023
--- | --- | --- | ---
Cash and cash equivalents | $ 3,595 | $ 3,753 | $ 3,824
Cash segregated for regulatory purposes | 35,216 | 28,840 | $ 26,385
Securities - segregated for regulatory purposes | 31,103 | 35,386 |
Securities borrowed | 7,513 | 5,835 |
Securities purchased under agreements to resell | 8,176 | 5,504 |
Receivables from customers | 56,006 | 44,472 |
Brokers, dealers and clearing organizations | 2,210 | 1,643 |
Interest Receivable | 423 | 375 |
Other assets | 1,335 | 1,127 |
Short-term borrowings | 33 | 17 |
Securities loaned | 16,818 | 11,347 |
Customers | 112,579 | 101,012 |
Brokers, dealers and clearing organizations | 1,202 | 590 |
Interest | 327 | 311 |
at Fair Value |  |  |
Cash and cash equivalents | 3,595 | 3,753 |
Cash segregated for regulatory purposes | 35,216 | 28,840 |
Securities - segregated for regulatory purposes | 24,415 | 29,632 |
Securities borrowed | 7,513 | 5,835 |
Securities purchased under agreements to resell | 8,176 | 5,504 |
Receivables from customers | 56,006 | 44,472 |
Brokers, dealers and clearing organizations | 2,210 | 1,643 |
Interest Receivable | 423 | 375 |
Other assets | 32 | 23 |
Total financial assets, not measured at fair value | 137,586 | 120,077 |
Short-term borrowings | 33 | 17 |
Securities loaned | 16,818 | 11,347 |
Customers | 112,579 | 101,012 |
Brokers, dealers and clearing organizations | 1,202 | 590 |
Interest | 327 | 311 |
Total financial liabilities, not measured at fair value | 130,959 | 113,277 |
Carrying Value |  |  |
Cash and cash equivalents | 3,595 | 3,753 |
Cash segregated for regulatory purposes | 35,216 | 28,840 |
Securities - segregated for regulatory purposes | 24,415 | 29,632 |
Securities borrowed | 7,513 | 5,835 |
Securities purchased under agreements to resell | 8,176 | 5,504 |
Receivables from customers | 56,006 | 44,472 |
Brokers, dealers and clearing organizations | 2,210 | 1,643 |
Interest Receivable | 423 | 375 |
Other assets | 30 | 22 |
Total financial assets, not measured at fair value | 137,584 | 120,076 |
Short-term borrowings | 33 | 17 |
Securities loaned | 16,818 | 11,347 |
Customers | 112,579 | 101,012 |
Brokers, dealers and clearing organizations | 1,202 | 590 |
Interest | 327 | 311 |
Total financial liabilities, not measured at fair value | 130,959 | 113,277 |
Level 1 [Member] |  |  |
Cash and cash equivalents | 3,595 | 3,753 |
Cash segregated for regulatory purposes | 35,216 | 28,840 |
Total financial assets, not measured at fair value | 38,811 | 32,593 |
Short-term borrowings |  |  |
Securities loaned |  |  |
Customers |  |  |
Brokers, dealers and clearing organizations |  |  |
Interest |  |  |
Total financial liabilities, not measured at fair value |  |  |
Level 2 [Member] |  |  |
Securities - segregated for regulatory purposes | 24,415 | 29,632 |
Securities borrowed | 7,513 | 5,835 |
Securities purchased under agreements to resell | 8,176 | 5,504 |
Receivables from customers | 56,006 | 44,472 |
Brokers, dealers and clearing organizations | 2,210 | 1,643 |
Interest Receivable | 423 | 375 |
Other assets | 3 | 2 |
Total financial assets, not measured at fair value | 98,746 | 87,463 |
Short-term borrowings | 33 | 17 |
Securities loaned | 16,818 | 11,347 |
Customers | 112,579 | 101,012 |
Brokers, dealers and clearing organizations | 1,202 | 590 |
Interest | 327 | 311 |
Total financial liabilities, not measured at fair value | 130,959 | 113,277 |
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 | 29 | 21 |
Total financial assets, not measured at fair value | 29 | 21 |
Short-term borrowings |  |  |
Securities loaned |  |  |
Customers |  |  |
Brokers, dealers and clearing organizations |  |  |
Interest |  |  |
Total financial liabilities, not measured at fair value |  |  |

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