Goodwill And Intangible Assets (Carrying Amount Of Goodwill And Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Goodwill, Beginning balance			$ 358,988
Goodwill, Net additions			2,747
Goodwill, Impairment losses
Goodwill, Ending balance	361,735		361,735
Intangible assets, Beginning balance			33,863
Intangible assets, Net additions
Intangible assets, Amortization	(1,200)	(1,200)	(3,713)	(3,588)
Intangible assets, Ending balance	30,150		30,150
Global Wealth Management [Member]
Goodwill, Beginning balance			143,828
Goodwill, Net additions			549
Goodwill, Impairment losses
Goodwill, Ending balance	144,377		144,377
Intangible assets, Beginning balance			18,819
Intangible assets, Net additions
Intangible assets, Amortization			(1,844)
Intangible assets, Ending balance	16,975		16,975
Institutional Group [Member]
Goodwill, Beginning balance			215,160
Goodwill, Net additions			2,198
Goodwill, Impairment losses
Goodwill, Ending balance	217,358		217,358
Intangible assets, Beginning balance			15,044
Intangible assets, Net additions
Intangible assets, Amortization			(1,869)
Intangible assets, Ending balance	$ 13,175		$ 13,175