Goodwill And Intangible Assets (Carrying Amount Of Goodwill And Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance			$ 915,602
Goodwill, Adjustments			76,124
Goodwill, Write-off			(2,600)
Goodwill, Ending balance	$ 989,126		989,126
Intangible assets, Beginning balance			63,177
Intangible assets, Net Additions			40,019
Intangible assets, Amortization	(2,600)	$ (1,900)	(10,558)	$ (5,952)
Intangible assets, Ending balance	92,638		92,638
Global Wealth Management [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance			269,384
Goodwill, Adjustments			(24,605)
Goodwill, Ending balance	244,779		244,779
Intangible assets, Beginning balance			27,964
Intangible assets, Net Additions			18,420
Intangible assets, Amortization			(5,147)
Intangible assets, Ending balance	41,237		41,237
Institutional Group [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance			646,218
Goodwill, Adjustments			100,729
Goodwill, Write-off			(2,600)
Goodwill, Ending balance	744,347		744,347
Intangible assets, Beginning balance			35,213
Intangible assets, Net Additions			21,599
Intangible assets, Amortization			(5,411)
Intangible assets, Ending balance	$ 51,401		$ 51,401