Goodwill and Intangible Assets (Carrying Amount Of Goodwill And Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance	$ 1,306,892
Goodwill, Adjustments	19,656
Goodwill, Ending balance	1,326,548	$ 1,306,892
Intangible assets, Beginning balance	148,157
Intangible assets, Adjustments	2,027
Intangible assets, Amortization	(19,595)	(18,188)	$ (19,620)
Intangible assets, Ending balance	130,589	148,157
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	38,884
Intangible assets, Amortization	(5,385)
Intangible assets, Ending balance	33,499	38,884
Institutional Group [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance	971,883
Goodwill, Adjustments	19,656
Goodwill, Ending balance	991,539	971,883
Intangible assets, Beginning balance	109,273
Intangible assets, Adjustments	2,027
Intangible assets, Amortization	(14,210)
Intangible assets, Ending balance	$ 97,090	$ 109,273