| Line | Label | Object Class | Period Type | Balance | Report ElementName |
|---|---|---|---|---|---|
| 1 | Extractives & Minerals Processing - Coal Operations (EM-CO) - Coal Reserves, Probable [Table] | Network | http://www.sasb.org/xbrl/taxonomy/table/CoalOperationsCoalReservesProbableTable |
Last updated: 7/30/2021 7:20:42 AM