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Other Assets - Narrative (Details) - Contract-Based Intangible Assets
$ in Millions
3 Months Ended
Apr. 07, 2022
USD ($)
Apr. 01, 2022
USD ($)
loan
Oct. 01, 2021
Mar. 31, 2022
USD ($)
loan
Jun. 30, 2022
USD ($)
Dec. 31, 2021
USD ($)
Servicing Assets at Fair Value [Line Items]            
Intangible assets, net, unamortized balance         $ 19.7 $ 13.7
Finite-lived intangible asset, useful life     5 years      
RMS            
Servicing Assets at Fair Value [Line Items]            
Number of loans boarded to servicing portfolio | loan   19,000   40,000    
Finite-lived intangible assets acquired $ 8.1 $ 4,100.0   $ 9,100.0    
Payments to acquire intangible assets $ 6.9