| The price received to sell a servicing asset or price paid to transfer a servicing liability in an orderly transaction between market participants at the measurement date. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Risks Inherent in Servicing Assets and Servicing Liabilities, Fair Value of Instruments Used to Manage Risks (Deprecated 2020-01-31) | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Risks Inherent in Servicing Assets and Servicing Liabilities, Fair Value of Instruments Used to Manage Risks, Beginning Balance (Deprecated 2020-01-31) | en-US | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Risks Inherent in Servicing Assets and Servicing Liabilities, Fair Value of Instruments Used to Manage Risks, Ending Balance (Deprecated 2020-01-31) | en-US | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |