Mortgage Servicing Rights - Additional Information (Details) - USD ($) $ in Millions |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
|
Transfers And Servicing Of Financial Assets [Abstract] | |||
Residential mortgage loans serviced for third parties | $ 2,800.0 | $ 3,100.0 | $ 2,900.0 |
Servicing income, including late and ancillary fees | $ 7.2 | $ 7.3 | $ 7.3 |