Goodwill And Intangible Assets (Carrying Amount Of Goodwill And Intangible Assets) (Details) - USD ($)		3 Months Ended		6 Months Ended
	Jul. 31, 2014	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance				$ 795,026,000
Goodwill, Net additions				90,985,000
Goodwill, Impairment losses	$ 0
Goodwill, Ending balance		$ 886,011,000		886,011,000
Intangible assets, Beginning balance				54,563,000
Intangible assets, Net additions				9,868,000
Intangible assets, Amortization		(1,800,000)	$ (1,700,000)	(3,673,000)	$ (8,204,000)
Intangible assets, Ending balance		60,758,000		60,758,000
Global Wealth Management [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance				177,171,000
Goodwill, Net additions				85,626,000
Goodwill, Ending balance		262,797,000		262,797,000
Intangible assets, Beginning balance				23,503,000
Intangible assets, Net additions				9,868,000
Intangible assets, Amortization				(1,582,000)
Intangible assets, Ending balance		31,789,000		31,789,000
Institutional Group [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance				617,855,000
Goodwill, Net additions				5,359,000
Goodwill, Ending balance		623,214,000		623,214,000
Intangible assets, Beginning balance				31,060,000
Intangible assets, Amortization				(2,091,000)
Intangible assets, Ending balance		$ 28,969,000		$ 28,969,000