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Revenues From Contracts With Customers (Schedule of Total Revenues Broken Out by Revenues From Contracts With Customers and Other Sources of Revenues) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Revenues: |  |  |
Revenue from contracts with customers | $ 3,293,976 | $ 2,709,629 |
Other sources of revenue: |  |  |
Interest | 2,016,464 | 1,955,745 | $ 1,099,115
Principal transactions | 604,564 | 490,440 | 529,033
Other | 36,682 | 3,466 |
Total revenues | 5,951,686 | 5,159,280 | $ 4,592,826
Commissions [Member] |  |  |
Revenues: |  |  |
Revenue from contracts with customers | 756,024 | 673,597 |
Investment Banking [Member] |  |  |
Revenues: |  |  |
Revenue from contracts with customers | 994,831 | 731,255 |
Asset Management [Member] |  |  |
Revenues: |  |  |
Revenue from contracts with customers | 1,536,674 | 1,299,496 |
Other [Member] |  |  |
Revenues: |  |  |
Revenue from contracts with customers | $ 6,447 | $ 5,281 |

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