Mortgage Servicing Rights - Additional Information (Details) - USD ($) $ in Billions |
9 Months Ended | 12 Months Ended |
|---|---|---|
Sep. 30, 2020 |
Dec. 31, 2019 |
|
| Transfers And Servicing [Abstract] | ||
| Mortgage servicing right weighted average life | 4 years 7 months 6 days | 4 years 10 months 24 days |
| Principal Amount Outstanding on Loans Securitized or Asset-backed Financing Arrangement | $ 57.4 | $ 50.6 |
| X | ||||||||||
- Definition Weighted average life of securitized assets regardless of when the transfer occurred, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition This is the principal amount outstanding for securitized loans only (across all types of loans). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|