Segment Reporting (Schedule Of Information Of Total Assets On Segment Basis) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Assets	$ 38,258,280	$ 37,727,460
Global Wealth Management [Member]
Segment Reporting Information [Line Items]
Assets	32,899,009	32,773,613
Institutional Group [Member]
Segment Reporting Information [Line Items]
Assets	4,895,407	4,564,058
Other Segments [Member]
Segment Reporting Information [Line Items]
Assets	$ 463,864	$ 389,789