Details for Selection
| Standard label: | Other than Temporary Impairment Losses, Investments, Held-to-maturity Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Vintage |
| Name: | us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsHeldtomaturitySecuritiesPortionRecognizedInEarningsNetQualitativeDisclosuresVintage |
| Documentation: | This item represents the vintage of the held-to-maturity investments which has been considered as one of the potential factors in reaching a conclusion that the investments are other than temporarily impaired and only the amount of impairment related to credit loss was recognized in earnings. |
| Commentary: | |
| Data type: | Date (xbrli:dateItemType) |
| Period type: | For period (duration) |
| Balance type: | |
| Object class: | [Concept] |