Quarterly report pursuant to Section 13 or 15(d)

Mortgage Servicing Rights, at Fair Value - Narrative (Details)

v3.23.3
Mortgage Servicing Rights, at Fair Value - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Servicing Assets at Fair Value [Line Items]          
Contractually specified servicing fees, late fees, and other ancillary servicing revenue $ 0.4 $ 4.6 $ 2.9 $ 32.0  
Servicing Asset, Fair Value, Change in Fair Value, Other, Statement of Income or Comprehensive Income [Extensible Enumeration] Fee income Fee income Fee income Fee income  
Asset Pledged as Collateral with Right          
Servicing Assets at Fair Value [Line Items]          
MSR $ 0.0   $ 0.0   $ 60.6