| Name | DebtSecuritiesAvailableForSaleMaturityWithinOneYearWeightedAverageYield |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| Prefix | us-gaap |
| Data type | num:percentItemType |
| Period type | instant |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Debt Securities, Available-for-Sale, Weighted Average Yield, Maturity, Year One | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Weighted average yield of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| Publisher | SEC | http://www.xbrl.org/2009/role/commonPracticeRef |
| Name | Industry Guide | http://www.xbrl.org/2009/role/commonPracticeRef |
| Number | 3 | http://www.xbrl.org/2009/role/commonPracticeRef |
| Section | II | http://www.xbrl.org/2009/role/commonPracticeRef |
| Paragraph | B | http://www.xbrl.org/2009/role/commonPracticeRef |