| Name | OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToNoncontrollingInterestHeldtomaturitySecurities |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
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| Data type | xbrli:monetaryItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | debit |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Other than Temporary Impairment Losses, Investments, Portion in Other Comprehensive Loss, Net of Tax, Including Portion Attributable to Noncontrolling Interest, Held-to-maturity Securities | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Amount after tax of other than temporary impairment (OTTI) loss on investment in held-to-maturity debt security, recognized in other comprehensive loss. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
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|---|---|---|
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| Name | Accounting Standards Codification | http://fasb.org/us-gaap/role/ref/legacyRef |
| Topic | 320 | http://fasb.org/us-gaap/role/ref/legacyRef |
| SubTopic | 10 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Section | 35 | http://fasb.org/us-gaap/role/ref/legacyRef |
| Paragraph | 34D | http://fasb.org/us-gaap/role/ref/legacyRef |
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| Name | Accounting Standards Codification | http://fasb.org/us-gaap/role/ref/legacyRef |
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| Name | Relation Type | Role | |
|---|---|---|---|
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| Name | Relation Type | Role | |
|---|---|---|---|
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