| Note | Element is modeled from perspective of statement of financial position. | http://fasb.org/us-gaap/role/tin/usage |
| Note | If effect within statement in which net income is reported related to element is not presented separately in statement in which net income is reported, element identified in tin-part:AlternateElement is used to convey location of effect within statement in which net income is reported. | http://fasb.org/us-gaap/role/tin/usage |
| AlternateElement | ServicingLiabilityAtFairValueOtherChangeInFairValueStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration | http://fasb.org/us-gaap/role/tin/usage |
| Positive_XBRL_Value | Increase | http://fasb.org/us-gaap/role/tin/value |
| Negative_XBRL_Value | Decrease | http://fasb.org/us-gaap/role/tin/value |
| elementCreationTaxonomyVersion | 2008 | http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote |
| Publisher | FASB | http://www.xbrl.org/2003/role/disclosureRef |
| Name | Accounting Standards Codification | http://www.xbrl.org/2003/role/disclosureRef |
| Topic | 860 | http://www.xbrl.org/2003/role/disclosureRef |
| SubTopic | 50 | http://www.xbrl.org/2003/role/disclosureRef |
| Section | 50 | http://www.xbrl.org/2003/role/disclosureRef |
| Paragraph | 3 | http://www.xbrl.org/2003/role/disclosureRef |
| Subparagraph | (a)(4)(ii) | http://www.xbrl.org/2003/role/disclosureRef |
| URI | https://asc.fasb.org/extlink&oid=128311188&loc=d3e122625-111746 | http://www.xbrl.org/2003/role/disclosureRef |