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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.

X

- Definition

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(1)(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income after deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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