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Revenue Recognition - Narrative (Details) - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2024
Dec. 31, 2023
Disaggregation of Revenue [Line Items]    
Contract assets related to contingent income $ 2.2 $ 2.8
Contract with customer, liability $ 0.6 1.9
Performance obligation, description of timing one year  
Insurance    
Disaggregation of Revenue [Line Items]    
Contract with customer, asset, net $ 6.1 5.7
Wealth Management    
Disaggregation of Revenue [Line Items]    
Contract with customer, asset, net $ 3.7 $ 3.0