Goodwill and Intangible Assets (Carrying Amount Of Goodwill And Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance	$ 1,306,892
Goodwill, Adjustments	2,400
Goodwill, Ending balance	1,309,292
Intangible assets, Beginning balance	148,157
Intangible assets, Adjustments	(2,436)
Intangible assets, Amortization	(5,094)	$ (4,268)
Intangible assets, Ending balance	140,627
Global Wealth Management [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance	335,009
Goodwill, Ending balance	335,009
Intangible assets, Beginning balance	38,884
Intangible assets, Amortization	(1,417)
Intangible assets, Ending balance	37,467
Institutional Group [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance	971,883
Goodwill, Adjustments	2,400
Goodwill, Ending balance	974,283
Intangible assets, Beginning balance	109,273
Intangible assets, Adjustments	(2,436)
Intangible assets, Amortization	(3,677)
Intangible assets, Ending balance	$ 103,160