Details for Selection
| Standard label: | Coal Products and Services Revenue |
| Name: | us-gaap:CoalProductsAndServicesRevenue |
| Documentation: | Revenue derived from sale of coal and related products. Also includes rendering of services and selling of products for exploration, development, mining, and processing, as well as supporting activities. |
| Commentary: | |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For period (duration) |
| Balance type: | Credit |
| Object class: | [Concept] |