| Note | Element is intended to be used for each reported period for which amendment from Accounting Standards Update identified in tin-part:Source_ASU_Number is applied. | http://fasb.org/us-gaap/role/tin/transition |
| Source | ASU | http://fasb.org/us-gaap/role/tin/transition |
| SourceName | Long-duration Insurance | http://fasb.org/us-gaap/role/tin/transition |
| Source_ASU_Number | 2018-12 | http://fasb.org/us-gaap/role/tin/transition |
| elementCreationTaxonomyVersion | 2019 | http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote |
| Publisher | FASB | http://www.xbrl.org/2003/role/exampleRef |
| Name | Accounting Standards Codification | http://www.xbrl.org/2003/role/exampleRef |
| Topic | 944 | http://www.xbrl.org/2003/role/exampleRef |
| SubTopic | 40 | http://www.xbrl.org/2003/role/exampleRef |
| Section | 55 | http://www.xbrl.org/2003/role/exampleRef |
| Paragraph | 29G | http://www.xbrl.org/2003/role/exampleRef |
| URI | https://asc.fasb.org/extlink&oid=126561865&loc=SL117819547-158441 | http://www.xbrl.org/2003/role/exampleRef |
| Publisher | FASB | http://www.xbrl.org/2003/role/disclosureRef |
| Name | Accounting Standards Codification | http://www.xbrl.org/2003/role/disclosureRef |
| Topic | 944 | http://www.xbrl.org/2003/role/disclosureRef |
| SubTopic | 40 | http://www.xbrl.org/2003/role/disclosureRef |
| Section | 50 | http://www.xbrl.org/2003/role/disclosureRef |
| Paragraph | 7B | http://www.xbrl.org/2003/role/disclosureRef |
| Subparagraph | (a) | http://www.xbrl.org/2003/role/disclosureRef |
| URI | https://asc.fasb.org/extlink&oid=124506351&loc=SL117782768-158439 | http://www.xbrl.org/2003/role/disclosureRef |