| Standard label: | Liability for Asbestos and Environmental Claims, Net, Incurred Loss |
| Name: | us-gaap:LiabilityForAsbestosAndEnvironmentalClaimsNetIncurredLoss1 |
| Documentation: | Amount, after effects of reinsurance, of expense for claims incurred and costs incurred in the claim settlement process attributable to asbestos and environmental claims. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:LiabilityForAsbestosAndEnvironmentalClaimsNetIncurredLoss1 |
| Label | Role | Language |
| Liability for Asbestos and Environmental Claims, Net, Incurred Loss | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 944 40 50 3 (b) | http://fasb.org/us-gaap/role/ref/legacyRef | 944 |