| Standard label: | Environmental Exit Costs, Reasonably Possible Additional Loss |
| Name: | us-gaap:EnvironmentalExitCostsReasonablyPossibleAdditionalLoss |
| Documentation: | Estimate of reasonably possible loss exposure in excess of amount accrued for remediation, site restoration, postclosure, monitoring commitments, or other exit costs associated with the sale, disposal or abandonment of a particular property resulting from unanticipated contamination of the assets. |
| 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:EnvironmentalExitCostsReasonablyPossibleAdditionalLoss |
| Label | Role | Language |
| Environmental Exit Costs, Reasonably Possible Additional Loss | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 450 20 S99 1 (SAB TOPIC 5.Y.Q4) | http://fasb.org/us-gaap/role/ref/legacyRef | 450 |
| FASB Accounting Standards Codification 450 20 50 3 | http://fasb.org/us-gaap/role/ref/legacyRef | 450 |
| FASB Accounting Standards Codification 450 20 50 4 | http://fasb.org/us-gaap/role/ref/legacyRef | 450 |