Goodwill and Intangible Assets (Carrying Amount Of Goodwill And Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance	$ 1,326,548
Goodwill, Adjustments	61,695
Goodwill, Ending balance	1,388,243	$ 1,326,548
Intangible assets, Beginning balance	130,589
Intangible assets, Adjustments	23,619
Intangible assets, Amortization	(20,929)	(19,595)	$ (18,188)
Intangible assets, Ending balance	133,279	130,589
Global Wealth Management [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance	335,009
Goodwill, Adjustments	0
Goodwill, Ending balance	335,009	335,009
Intangible assets, Beginning balance	33,499
Intangible assets, Adjustments	0
Intangible assets, Amortization	(4,812)
Intangible assets, Ending balance	28,687	33,499
Institutional Group [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance	991,539
Goodwill, Adjustments	61,695
Goodwill, Ending balance	1,053,234	991,539
Intangible assets, Beginning balance	97,090
Intangible assets, Adjustments	23,619
Intangible assets, Amortization	(16,117)
Intangible assets, Ending balance	$ 104,592	$ 97,090