Goodwill And Intangible Assets (Carrying Amount Of Goodwill And Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Goodwill, Beginning balance	$ 419,393
Goodwill, Net additions	310,613
Goodwill, Impairment losses
Goodwill, Ending balance	730,006
Intangible assets, Beginning balance	28,967
Intangible assets, Net additions	3,256
Intangible assets, Amortization	(1,138)	(1,329)
Intangible assets, Ending balance	31,085
Global Wealth Management [Member]
Goodwill, Beginning balance	144,377
Goodwill, Impairment losses
Goodwill, Ending balance	144,377
Intangible assets, Beginning balance	16,377
Intangible assets, Net additions
Intangible assets, Amortization	(574)
Intangible assets, Ending balance	15,803
Institutional Group [Member]
Goodwill, Beginning balance	275,016
Goodwill, Net additions	310,613
Goodwill, Impairment losses
Goodwill, Ending balance	585,629
Intangible assets, Beginning balance	12,590
Intangible assets, Net additions	3,256
Intangible assets, Amortization	(564)
Intangible assets, Ending balance	$ 15,282