| Name | LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseBusinessAcquisitions |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| Prefix | us-gaap |
| Data type | xbrli:monetaryItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | credit |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Liability for Unpaid Claims and Claims Adjustment Expense, Business Acquisitions | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Amount of increase (decrease) in the cost of settling unpaid claims after deduction of reinsurance recoveries related to the acquisition of a business. Includes, but is not limited to, claims which have been incurred but not reported. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |