Goodwill and Intangible Assets (Carrying Amount Of Goodwill And Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance	$ 1,326,548
Goodwill, Adjustments	53,663
Goodwill, Ending balance	1,380,211
Intangible assets, Beginning balance	130,589
Intangible assets, Adjustments	6,037
Intangible assets, Amortization	(4,437)	$ (5,094)
Intangible assets, Ending balance	132,189
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
Intangible assets, Beginning balance	33,499
Intangible assets, Adjustments	0
Intangible assets, Amortization	(1,254)
Intangible assets, Ending balance	32,245
Institutional Group [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance	991,539
Goodwill, Adjustments	53,663
Goodwill, Ending balance	1,045,202
Intangible assets, Beginning balance	97,090
Intangible assets, Adjustments	6,037
Intangible assets, Amortization	(3,183)
Intangible assets, Ending balance	$ 99,944