| Standard label: | Environmental Remediation Expense |
| Name: | us-gaap:EnvironmentalRemediationExpense |
| Documentation: | The charge against earnings in the period for known or estimated future costs arising from requirements to perform environmental remediation activities. |
| 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:EnvironmentalRemediationExpense |
| Label | Role | Language |
| Environmental Remediation Expense | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 410 30 45 4 | http://www.xbrl.org/2003/role/disclosureRef | 410 |
| FASB Accounting Standards Codification 410 30 50 12 (a) | http://www.xbrl.org/2003/role/recommendedDisclosureRef | 410 |
| Part Of Roll Up: |
| us-gaap:RestructuringSettlementAndImpairmentProvisions |
| us-gaap:EnvironmentalExpenseAndLiabilities |