| Name | LtvLessThan80PercentMember |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| Prefix | us-gaap |
| Data type | nonnum:domainItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | True |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Debt-to-Value Ratio, Less than 80 Percent [Member] | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Debt-to-value (DTV) ratio less than 80%. Element name and standard label in DTV Greater Than [low end numeric value] Percent [Member] or DTV Less Than [high end numeric value] Percent [Member] formats. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| SourceName | Financial Instruments-Credit Losses | http://fasb.org/srt/role/changeNote/changeNote |
| TaxonomyVersion | 2019 | http://fasb.org/srt/role/changeNote/changeNote |
| ChangeDate | 2018-10 | http://fasb.org/srt/role/changeNote/changeNote |
| ModifiedLabels | true | http://fasb.org/srt/role/changeNote/changeNote |
| ModifiedDocumentation | true | http://fasb.org/srt/role/changeNote/changeNote |
| PreviousDocumentation | Loan-to-value (LTV) ratio less than 80%. Element name and standard label in LTV Greater Than [low end numeric value] Percent [Member] or LTV Less Than [high end numeric value] Percent [Member] formats. | http://fasb.org/srt/role/changeNote/changeNote |
| Source_ASU_Number | 2016-13 | http://fasb.org/srt/role/changeNote/changeNote |