| Name | AdditionalLiabilityLongDurationInsuranceActivityTable |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| Prefix | us-gaap |
| Data type | xbrli:stringItemType |
| Period type | duration |
| Substitution Group | xbrldt:hypercubeItem |
| Balance | None |
| Nillable | True |
| Abstract | True |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Disclosure of information about activity in balance of present value of total expected payment to policyholder in excess of present value of total expected assessment. Includes, but is not limited to, beginning and ending balance, issuance, interest income (expense), net premium, benefit payment, derecognition (lapse), experience adjustment, change in cash flow assumption, and change in discount rate assumption. Excludes benefit classified as market risk benefit or under provisions of Topic 815 on derivative and hedging. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Additional Liability, Long-Duration Insurance, Activity [Table] | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| 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 | 6 | http://www.xbrl.org/2003/role/disclosureRef |
| Subparagraph | (a) | http://www.xbrl.org/2003/role/disclosureRef |
| URI | http://asc.fasb.org/extlink&oid=121643868&loc=d3e14931-158439 | http://www.xbrl.org/2003/role/disclosureRef |