Goodwill and Intangible Assets (Carrying Amount Of Goodwill And Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance			$ 1,326,548
Goodwill, Adjustments			72,581
Goodwill, Ending balance	$ 1,399,129		1,399,129
Intangible assets, Beginning balance			130,589
Intangible assets, Adjustments			10,726
Intangible assets, Amortization	(4,800)	$ (4,400)	(13,872)	$ (14,966)
Intangible assets, Ending balance	127,443		127,443
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, Amortization			(3,652)
Intangible assets, Ending balance	29,847		29,847
Institutional Group [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance			991,539
Goodwill, Adjustments			72,581
Goodwill, Ending balance	1,064,120		1,064,120
Intangible assets, Beginning balance			97,090
Intangible assets, Adjustments			10,726
Intangible assets, Amortization			(10,220)
Intangible assets, Ending balance	$ 97,596		$ 97,596