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Segment Reporting (Schedule Of Operating Information, Segment) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Segment Reporting Information [Line Items] |  |  |  |  |
Net revenues | [1] | $ 800,787 | $ 742,732 | $ 1,571,207 | $ 1,493,090
Income/(loss) before income taxes |  | 147,982 | 118,347 | 285,791 | 237,901
Global Wealth Management [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net revenues | [1] | 532,433 | 497,327 | 1,043,043 | 982,902
Income/(loss) before income taxes |  | 192,352 | 187,895 | 386,842 | 364,666
Institutional Group [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net revenues | [1] | 270,602 | 252,825 | 531,888 | 522,903
Income/(loss) before income taxes |  | 39,302 | 36,024 | 71,506 | 80,594
Other Segments [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net revenues | [1] | (2,248) | (7,420) | (3,724) | (12,715)
Income/(loss) before income taxes |  | $ (83,672) | $ (105,572) | $ (172,557) | $ (207,359)
[1] | No individual client accounted for more than 10 percent of total net revenues for the three and six months ended June 30, 2019 or 2018.

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