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Goodwill and Other Intangible Assets - Carrying Amount of Goodwill (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Goodwill [Line Items]    
Goodwill $ 1,868,936 $ 1,868,936
Consumer Banking    
Goodwill [Line Items]    
Goodwill 349,646 349,646
Commercial Banking    
Goodwill [Line Items]    
Goodwill 1,441,148 1,441,148
Wealth Management | Consumer Banking    
Goodwill [Line Items]    
Goodwill $ 78,142 $ 78,142