Goodwill and Intangible Assets (Carrying Amount Of Goodwill And Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance	$ 1,181,998
Goodwill, Adjustments	124,894
Goodwill, Ending balance	1,306,892	$ 1,181,998
Intangible assets, Beginning balance	140,984
Intangible assets, Adjustments	25,361
Intangible assets, Amortization	(18,188)	(19,620)	$ (16,015)
Intangible assets, Ending balance	148,157	140,984
Global Wealth Management [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance	335,009
Goodwill, Ending balance	335,009	335,009
Intangible assets, Beginning balance	44,671
Intangible assets, Amortization	(5,787)
Intangible assets, Ending balance	38,884	44,671
Institutional Group [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance	846,989
Goodwill, Adjustments	124,894
Goodwill, Ending balance	971,883	846,989
Intangible assets, Beginning balance	96,313
Intangible assets, Adjustments	25,361
Intangible assets, Amortization	(12,401)
Intangible assets, Ending balance	$ 109,273	$ 96,313