| Standard label: | Multiple-Employer Plan Accounted for as Multiemployer Plan, Plan Name |
| Name: | us-gaap:SingleEmployerPlansAccountedForAsMultiemployerPlanName |
| Documentation: | Name of defined benefit plan, defined as multiple-employer plan but accounted for as multiemployer plan, in which entity participates. |
| Object type: | cm:Concept |
| Data type: | Text/String (xbrli:stringItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:SingleEmployerPlansAccountedForAsMultiemployerPlanName |
| Label | Role | Language |
| Multiple-Employer Plan Accounted for as Multiemployer Plan, Plan Name | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 715 30 55 63 | http://fasb.org/us-gaap/role/ref/legacyRef | 715 |
| FASB Accounting Standards Codification 715 30 55 64 | http://fasb.org/us-gaap/role/ref/legacyRef | 715 |