| Standard label: | Multiemployer Plans, Funded Status [Fixed List] |
| Name: | us-gaap:MultiemployerPlansFundedStatus |
| Documentation: | Indicate whether the multiemployer plan is less than 65 percent funded, between 65 and less than 80 percent funded, or at least 80 percent funded. The acceptable values are: (1) "less than 65 percent", (2) "between 65 and less than 80 percent", (3) "at least 80 percent", and (4) "NA". A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. |
| Object type: | cm:Concept |
| Data type: | us-types:fundedStatusItemType |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:MultiemployerPlansFundedStatus |
| Label | Role | Language |
| Multiemployer Plans, Funded Status [Fixed List] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 715 80 50 5 (c) | http://fasb.org/us-gaap/role/ref/legacyRef | 715 |