v3.26.3
Goodwill and Intangible Assets (Carrying Amount Of Goodwill and Intangible Assets) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Schedule of Goodwill and Intangible Assets [Line Items]        
Goodwill, Beginning balance     $ 1,463,858  
Goodwill, Ending balance $ 1,463,858   1,463,858  
Intangible assets, Beginning balance     108,045  
Intangible assets, Adjustments     (161)  
Intangible assets, Amortization (4,000) $ (5,700) (23,106) $ (16,599)
Intangible assets, Ending balance 84,778   84,778  
Global Wealth Management [Member]        
Schedule of Goodwill and Intangible Assets [Line Items]        
Goodwill, Beginning balance     351,708  
Goodwill, Ending balance 351,708   351,708  
Intangible assets, Beginning balance     26,287  
Intangible assets, Amortization     (2,916)  
Intangible assets, Ending balance 23,371   23,371  
Institutional Group [Member]        
Schedule of Goodwill and Intangible Assets [Line Items]        
Goodwill, Beginning balance     1,112,150  
Goodwill, Ending balance 1,112,150   1,112,150  
Intangible assets, Beginning balance     81,758  
Intangible assets, Adjustments     (161)  
Intangible assets, Amortization     (20,190)  
Intangible assets, Ending balance $ 61,407   $ 61,407