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Segment Reporting (Schedule Of Operating Information, Segment) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Segment Reporting Information [Line Items] |  |  |  |  |
Net revenues | [1] | $ 1,224,668 | $ 1,045,051 | $ 3,605,638 | $ 3,202,565
Income/(loss) before income taxes |  | 216,658 | 109,429 | 662,243 | 500,697
Global Wealth Management [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net revenues | [1] | 827,116 | 768,558 | 2,418,751 | 2,283,934
Income/(loss) before income taxes |  | 301,703 | 298,449 | 891,624 | 914,462
Institutional Group [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net revenues | [1] | 372,401 | 256,888 | 1,114,498 | 867,025
Income/(loss) before income taxes |  | 41,797 | (27,804) | 127,719 | (5,671)
Other Segments [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net revenues | [1] | 25,151 | 19,605 | 72,389 | 51,606
Income/(loss) before income taxes |  | $ (126,842) | $ (161,216) | $ (357,100) | $ (408,094)
[1] | No individual client accounted for more than 10 percent of total net revenues for the three and nine months ended September 30, 2024 and 2023.

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