| Name | DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| Prefix | us-gaap |
| Data type | xbrli:monetaryItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | debit |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Debt Securities, Available-for-sale, Allowance for Credit Loss, Not to Sell before Recovery, Credit Loss, Previously Recorded, Expense (Reversal) | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Amount of expense (reversal of expense) for allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), not intended to be sold and not more likely than not will be required to sell before recovery of amortized cost basis, with previously recorded allowance. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| Note | Element is intended to be used upon adoption of amendments from Accounting Standards Update 2016-13. | http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote |
| PublishDate | 2019-01 | http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote |
| Source | ASU | http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote |
| SourceName | Financial Instruments-Credit Losses | http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote |
| Source_ASU_Number | 2016-13 | http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote |
| Note | Element is modeled from income statement perspective. | http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote |
| PublishDate | 2019-01 | http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote |
| SourceName | Financial Instruments-Credit Losses | http://fasb.org/srt/role/changeNote/changeNote |
| TaxonomyVersion | 2019 | http://fasb.org/srt/role/changeNote/changeNote |
| ChangeDate | 2018-09 | http://fasb.org/srt/role/changeNote/changeNote |
| NewElement | true | http://fasb.org/srt/role/changeNote/changeNote |
| Source_ASU_Number | 2016-13 | http://fasb.org/srt/role/changeNote/changeNote |
| Publisher | FASB | http://www.xbrl.org/2003/role/disclosureRef |
| Name | Accounting Standards Codification | http://www.xbrl.org/2003/role/disclosureRef |
| Topic | 326 | http://www.xbrl.org/2003/role/disclosureRef |
| SubTopic | 30 | http://www.xbrl.org/2003/role/disclosureRef |
| Section | 50 | http://www.xbrl.org/2003/role/disclosureRef |
| Paragraph | 9 | http://www.xbrl.org/2003/role/disclosureRef |
| Subparagraph | (f) | http://www.xbrl.org/2003/role/disclosureRef |
| URI | http://asc.fasb.org/extlink&oid=121582814&loc=SL82922900-210455 | http://www.xbrl.org/2003/role/disclosureRef |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossRollForward | parent-child | http://fasb.org/us-gaap/role/disclosure/CreditLosses | |
us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossPeriodIncreaseDecrease | summation-item | http://fasb.org/us-gaap/role/disclosure/CreditLosses | |
us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossRollForward | domain-member | http://fasb.org/us-gaap/role/disclosure/CreditLossesDebtSecuritiesAvailableForSaleAllowanceForCreditLossTable |