| Standard label: | Liability for Claims and Claims Adjustment Expense |
| Name: | us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpense |
| Documentation: | The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpense |
| Label | Role | Language |
| Liability for Claims and Claims Adjustment Expense | http://www.xbrl.org/2003/role/label | en-US |
| Liability for Claims and Claims Adjustment Expense, Ending Balance | http://www.xbrl.org/2003/role/periodEndLabel | en-US |
| Liability for Claims and Claims Adjustment Expense, Beginning Balance | http://www.xbrl.org/2003/role/periodStartLabel | en-US |
| Liability for Claims and Claims Adjustment Expense, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 944 40 50 3 (a) | http://fasb.org/us-gaap/role/ref/legacyRef | 944 |
| FASB Accounting Standards Codification 944 40 50 3 (cc) | http://fasb.org/us-gaap/role/ref/legacyRef | 944 |