Goodwill And Intangible Assets (Carrying Amount Of Goodwill And Intangible Assets) (Details) - USD ($)		3 Months Ended
	Jul. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance		$ 915,602,000
Goodwill, Adjustments		58,664,000
Goodwill, Impairment losses	$ 0
Goodwill, Ending balance		974,266,000
Intangible assets, Beginning balance		63,177,000
Intangible assets, Net Additions		32,719,000
Intangible assets, Amortization		(2,974,000)	$ (1,942,000)
Intangible assets, Ending balance		92,922,000
Global Wealth Management [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance		269,384,000
Goodwill, Adjustments		(17,679,000)
Goodwill, Ending balance		251,705,000
Intangible assets, Beginning balance		27,964,000
Intangible assets, Net Additions		11,120,000
Intangible assets, Amortization		(1,420,000)
Intangible assets, Ending balance		37,664,000
Institutional Group [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance		646,218,000
Goodwill, Adjustments		76,343,000
Goodwill, Ending balance		722,561,000
Intangible assets, Beginning balance		35,213,000
Intangible assets, Net Additions		21,599,000
Intangible assets, Amortization		(1,554,000)
Intangible assets, Ending balance		$ 55,258,000