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Segment Reporting (Schedule of Operating Information, Segment) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Segment Reporting Information [Line Items] |  |  |  |  |
Net revenues | [1] | $ 1,108,126 | $ 1,153,136 | $ 2,224,653 | $ 2,287,925
Income/(loss) before income taxes |  | 218,541 | 264,025 | 445,650 | 491,917
Global Wealth Management [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net revenues | [1] | 697,980 | 637,567 | 1,379,705 | 1,269,062
Income/(loss) before income taxes |  | 245,152 | 227,305 | 470,565 | 450,536
Institutional Group [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net revenues | [1] | 411,364 | 520,811 | 842,727 | 1,026,892
Income/(loss) before income taxes |  | 72,992 | 141,494 | 169,620 | 258,682
Other Segments [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net revenues | [1] | (1,218) | (5,242) | 2,221 | (8,029)
Income/(loss) before income taxes |  | $ (99,603) | $ (104,774) | $ (194,535) | $ (217,301)
[1] | No individual client accounted for more than 10 percent of total net revenues for the three and six months ended June 30, 2022 and 2021.

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