Details for Selection
| Standard label: | Emission Credits or Allowances, Policy [Policy Text Block] |
| Name: | us-gaap:EmissionCreditsOrAllowancesPolicy |
| Documentation: | Disclosure of accounting policy for emission credits or allowances. Such accounting policy has generally been based on an inventory or intangible asset model. |
| Commentary: | |
| Data type: | Text Block (HTML) (nonnum:textBlockItemType) |
| Period type: | For period (duration) |
| Balance type: | |
| Object class: | [Text Block] |